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Dr. Jon Harris joined the Rockwall Surgical Specialists team in 2018 and sees patients in the Rockwall, Rowlett and Forney locations.  Dr. Harris is certified by the American Board of Surgery and specializes in laparoscopic and robotic surgery.  He performs all manner of general surgery, including hernia repair, gallbladder surgery, weight loss surgery, thyroid surgery, gastro-esophageal reflux surgery, colorectal surgery, and many other procedures.

Dr. Jon Harris is a native of North Texas and grew up in Denton, TX.  He attended the University of Texas at Dallas where he received multiple academic scholarships.  He went on to attend medical school at the University of Texas Medical Branch in Galveston where he fell in love with the art of surgery.  Dr. Harris returned to Dallas to complete his general surgery residency training at Baylor University Medical Center.  During his residency, Dr. Harris participated in research to improve the fields of bariatric surgery, gastro-esophageal reflux surgery, and robotic surgery.

When he is not at work, Dr. Harris spends his free time with his wife and children.  Dr. Harris also enjoys swimming, golfing, and playing the guitar.

Dr. Joshua Mark joined the Rockwall Surgical Specialists team in 2020. He offers a broad array of surgical interventions to his patients in our Rowlett and Forney locations, including weight loss surgery, hernia repair, gastro-esophageal reflux surgery, colorectal surgery, gallbladder surgery, and many others. He specializes in minimally invasive techniques, including advanced robotic and laparoscopic surgery.

Dr. Joshua Mark received his undergraduate training at the University of Kansas, majoring in Spanish. While living abroad, he completed an advanced course in Medical Spanish and can speak Spanish fluently. He attended medical school at the University of Kansas before making his way to Dallas, Texas, to complete a general surgical residency at Baylor University Medical Center. His broad training experience in the DFW area afforded him the opportunity to care for and better understand the needs of a diverse patient population.

Throughout his training, he received numerous awards and honors, including Intern of the Year, and completed multiple publications in the field of trauma and acute care surgery. He also attended multiple advanced robotics training courses to further his abilities as a minimally invasive surgeon.

In his free time, Dr. Mark enjoys spending time with his wife and children. He is passionate about cooking, woodworking and spending time outdoors.

Dr. David Ritter founded Rockwall Surgical Specialists in 1998. Since then, he has helped over 15,000 patients in the communities of Rockwall, Rowlett and Greenville, Texas. As an expert in general surgery, Dr. Ritter performs the full range of surgical interventions, from hernia repair and colon surgery to gallbladder and thyroid surgery.

He also specializes in bariatric surgery and has established a comprehensive program of nutritional and lifestyle support for patients undergoing weight loss surgery. Whenever possible, he performs laparoscopic surgery, which benefits his patients by promoting quicker recovery and minimal scarring.

Dr. David Ritter graduated from Washington University in St. Louis, one of the top medical schools in the nation, then completed his surgical training at Baylor University Medical Center in Dallas.  Dr. Ritter is certified by the American Board of Surgery, a fellow of the American College of Surgeons, and a member of the American Society of Bariatric and Metabolic Surgeons.

Outside of work, Dr. Ritter enjoys spending time with his wife and their many children. He enjoys playing golf, exercising, and vacationing with his family.

Dr. Ashley Egan, certified by the American Board of Surgery, practices at Rockwall Surgical Specialists, where she provides the full array of general and bariatric surgery procedures. Dr. Egan’s patients in Rockwall, Rowlett, Greenville and Terrell, Texas, benefit from her specialty in laparoscopic and robotic surgery, whether they need thyroid surgery, a hernia repair, weight loss surgery, or any other type of surgical intervention.

Dr. Egan graduated summa cum laude from the University of Georgia, then completed medical school at the University of Texas Southwestern Medical School in Dallas. She stayed in Dallas to finish her internship and residency training in general surgery at the Baylor University Medical Center.

Throughout her education, Dr. Egan served in leadership positions and received numerous awards, scholarships, and honors, including SEC Student Athlete of the Year. She was the starting goalkeeper on the University of Georgia soccer team during her college years. She has enjoyed transitioning her competitiveness and desire to improve from the soccer field into the operating room. 

Outside of work, Dr. Egan enjoys playing golf, crossfit, and cooking.

Dr. Jon Harris joined the Rockwall Surgical Specialists team in 2018 and sees patients in the Rockwall, Rowlett and Forney locations.  Dr. Harris is certified by the American Board of Surgery and specializes in laparoscopic and robotic surgery.  He performs all manner of general surgery, including hernia repair, gallbladder surgery, weight loss surgery, thyroid surgery, gastro-esophageal reflux surgery, colorectal surgery, and many other procedures.

Dr. Jon Harris is a native of North Texas and grew up in Denton, TX.  He attended the University of Texas at Dallas where he received multiple academic scholarships.  He went on to attend medical school at the University of Texas Medical Branch in Galveston where he fell in love with the art of surgery.  Dr. Harris returned to Dallas to complete his general surgery residency training at Baylor University Medical Center.  During his residency, Dr. Harris participated in research to improve the fields of bariatric surgery, gastro-esophageal reflux surgery, and robotic surgery.

When he is not at work, Dr. Harris spends his free time with his wife and children.  Dr. Harris also enjoys swimming, golfing, and playing the guitar.

Dr. David Ritter founded Rockwall Surgical Specialists in 1998. Since then, he has helped over 15,000 patients in the communities of Rockwall, Rowlett and Greenville, Texas. As an expert in general surgery, Dr. Ritter performs the full range of surgical interventions, from hernia repair and colon surgery to gallbladder and thyroid surgery.

He also specializes in bariatric surgery and has established a comprehensive program of nutritional and lifestyle support for patients undergoing weight loss surgery. Whenever possible, he performs laparoscopic surgery, which benefits his patients by promoting quicker recovery and minimal scarring.

Dr. David Ritter graduated from Washington University in St. Louis, one of the top medical schools in the nation, then completed his surgical training at Baylor University Medical Center in Dallas.  Dr. Ritter is certified by the American Board of Surgery, a fellow of the American College of Surgeons, and a member of the American Society of Bariatric and Metabolic Surgeons.

Outside of work, Dr. Ritter enjoys spending time with his wife and their many children. He enjoys playing golf, exercising, and vacationing with his family.

Dr. Ashley Egan, certified by the American Board of Surgery, practices at Rockwall Surgical Specialists, where she provides the full array of general and bariatric surgery procedures. Dr. Egan’s patients in Rockwall, Rowlett, Greenville and Terrell, Texas, benefit from her specialty in laparoscopic and robotic surgery, whether they need thyroid surgery, a hernia repair, weight loss surgery, or any other type of surgical intervention.

Dr. Egan graduated summa cum laude from the University of Georgia, then completed medical school at the University of Texas Southwestern Medical School in Dallas. She stayed in Dallas to finish her internship and residency training in general surgery at the Baylor University Medical Center.

Throughout her education, Dr. Egan served in leadership positions and received numerous awards, scholarships, and honors, including SEC Student Athlete of the Year. She was the starting goalkeeper on the University of Georgia soccer team during her college years. She has enjoyed transitioning her competitiveness and desire to improve from the soccer field into the operating room. 

Outside of work, Dr. Egan enjoys playing golf, crossfit, and cooking.

Matthew Hausenfluke, DPM, is a board-certified foot and ankle surgeon at North Texas Foot & Ankle, which has locations in Dallas and Garland, Texas.

Prior to founding North Texas Foot & Ankle, Dr. Hausenfluke spent several years practicing surgical foot and ankle reconstruction at the Foot and Ankle Institute at Monrovia, California, where he participated in the BAJA Project for Crippled Children, spending two years, off and on, serving children in clinics in and around the Mexicali, Mexico, area. During that period, Dr. Hausenfluke spent almost every weekend treating pediatric limb deformities with conservative care and surgical reconstruction. “I got to know the children so well,” comments Hausenfluke, “I could recognize their cries from another room. They were very special to me, and I thoroughly enjoyed my work there. There’s nothing like healing children.”

Dr. Hausenfluke also dedicated a great deal of time to third-world pediatric intervention through “Operation Footprint,” sponsored by the Rotary Club in Tegucigalpa, Honduras, where he volunteered his skills in the treatment of pediatric congenital limb deformities.

In January of 2005, Dr. Hausenfluke joined a medical team based out of Baylor hospital of Garland. The surgical mission performed 53 surgical procedures at the Predisan mission in Catacamas, Honduras.             

From 2005-2007, Dr. Hausenfluke led a medical team along with E3 ministries to the Amazon basin in South America. The team spent seven days going from river village to river village, establishing daily clinics to care for the needs of the Brazillian natives.  “I grew a new respect for those who live off the land, and I truly admire the people of the Amazon Basin.” 

After graduating from Texas A&M University with a B.S. in biomedical science, Dr. Hausenfluke attended Des Moines University in Iowa, where he earned his doctorate in podiatry. He then began his residency at the Veteran’s Administration and Scott & White Hospital in Temple, Texas. There he mastered his skills in the treatment of diabetic limb salvage and diabetes-associated ailments. Dr. Hausenfluke has said, “It is my sincerest desire to help heal my patients with as little discomfort and inconvenience as possible.”

Dr. Hausenfluke has a conservative perspective on treatment options and surgical intervention, which considers the patient’s entire body. “I try to achieve a more functional result with conservative treatment options and a heavy emphasis on biomechanics,” explains Hausenfluke. “This philosophy is very important in the patient’s daily activities, as well as in sports-related injuries.”

Dr. Hausenfluke is a native Texan from Abilene. In his spare time, he enjoys sports activities, including distance running, backpacking, cycling, and woodworking. Dr. Hausenfluke is Board Certified by the American Board of Podiatric Surgery.

Matthew Hausenfluke, DPM, is a board-certified foot and ankle surgeon at North Texas Foot & Ankle, which has locations in Dallas and Garland, Texas.

Prior to founding North Texas Foot & Ankle, Dr. Hausenfluke spent several years practicing surgical foot and ankle reconstruction at the Foot and Ankle Institute at Monrovia, California, where he participated in the BAJA Project for Crippled Children, spending two years, off and on, serving children in clinics in and around the Mexicali, Mexico, area. During that period, Dr. Hausenfluke spent almost every weekend treating pediatric limb deformities with conservative care and surgical reconstruction. “I got to know the children so well,” comments Hausenfluke, “I could recognize their cries from another room. They were very special to me, and I thoroughly enjoyed my work there. There’s nothing like healing children.”

Dr. Hausenfluke also dedicated a great deal of time to third-world pediatric intervention through “Operation Footprint,” sponsored by the Rotary Club in Tegucigalpa, Honduras, where he volunteered his skills in the treatment of pediatric congenital limb deformities.

In January of 2005, Dr. Hausenfluke joined a medical team based out of Baylor hospital of Garland. The surgical mission performed 53 surgical procedures at the Predisan mission in Catacamas, Honduras.             

From 2005-2007, Dr. Hausenfluke led a medical team along with E3 ministries to the Amazon basin in South America. The team spent seven days going from river village to river village, establishing daily clinics to care for the needs of the Brazillian natives.  “I grew a new respect for those who live off the land, and I truly admire the people of the Amazon Basin.” 

After graduating from Texas A&M University with a B.S. in biomedical science, Dr. Hausenfluke attended Des Moines University in Iowa, where he earned his doctorate in podiatry. He then began his residency at the Veteran’s Administration and Scott & White Hospital in Temple, Texas. There he mastered his skills in the treatment of diabetic limb salvage and diabetes-associated ailments. Dr. Hausenfluke has said, “It is my sincerest desire to help heal my patients with as little discomfort and inconvenience as possible.”

Dr. Hausenfluke has a conservative perspective on treatment options and surgical intervention, which considers the patient’s entire body. “I try to achieve a more functional result with conservative treatment options and a heavy emphasis on biomechanics,” explains Hausenfluke. “This philosophy is very important in the patient’s daily activities, as well as in sports-related injuries.”

Dr. Hausenfluke is a native Texan from Abilene. In his spare time, he enjoys sports activities, including distance running, backpacking, cycling, and woodworking. Dr. Hausenfluke is Board Certified by the American Board of Podiatric Surgery.

Welcome to Optimal Weight Loss and Surgery Consultants, where we are dedicated to helping you achieve your health and wellness goals through a comprehensive approach to weight loss and general surgery. Our practice specializes in advanced robotic surgery, providing minimally invasive solutions with precision and care.

At Optimal Weight Loss and Surgery Consultants, we believe that a successful weight loss journey involves more than just surgery. Our comprehensive approach includes personalized plans that encompass nutritional guidance, lifestyle modifications, and ongoing support to ensure lasting results. We also offer a range of surgeries, including hernia surgery, appendicitis surgery, and more.

My name is Dr. Tarik Al-Kalla, and I am honored to lead the team at Optimal Weight Loss and Surgery Consultants. My journey in the field of surgery began with a Bachelor of Science in Biology and a minor in Chemistry from the University of Houston in Texas. I earned my Doctor of Medicine from Texas Tech University Health Sciences Center School of Medicine in Lubbock.

I then completed my residency in general surgery at Michigan State University/Spectrum Health in Grand Rapids, where I gained extensive experience in various surgical procedures. My passion for minimally invasive techniques led me to pursue a fellowship in MIS/Bariatrics Surgery at St. Luke's Surgical Specialists in Kansas City, Missouri. I have obtained several awards and accolades including 2024 Texas Super Doctors® Rising Stars, Best Doctor in Collin county D magazine for bariatric surgery multiple years (2022, 2023, 2024), Top doctors (2022, 2023), Michigan State University/Spectrum Health Emergency General Surgery Chief Award during surgery residency, and Intuitive robotic surgery proctor. I am also the Trauma Medical Director at Medical City Frisco.

With a commitment to excellence and a patient-centered approach, I strive to provide the highest standard of care. Whether you are considering weight loss surgery or need general surgical services, you can trust that you are in capable and compassionate hands.

Thank you for considering Optimal Weight Loss and Surgery Consultants. We look forward to partnering with you on your journey to better health.

Dr. Dina Madni, MD, is a board-certified general surgeon and a Fellow of the American College of Surgeons (FACS). She is a valuable partner at Surgical Consultants of Dallas and practices at two renowned hospitals in North Texas: Medical City Dallas and Texas Health Presbyterian Plano. She also holds privileges at several state-of-the-art outpatient surgery centers. 

Dr. Madni's exceptional skills and unwavering dedication have earned her numerous awards, including being named "Best Doctor" by D Magazine for five consecutive years (2019-2023), "Top Doc" by Living Magazine (2019)& Findatopdoc.com (2024), and "Top Surgeon" in Dallas by Women in Medicine (2019). This recognition is a testament to her competence and assures her patients of the quality of care they will receive. 

Dr. Madni's extensive general surgery training at UT Southwestern and her Doctor of Medicine (M.D.) from Emory University in Atlanta, Georgia, have honed her skills to perfection. Her proficiency as one of the most skilled robotic surgeons in the Dallas-Fort Worth area, specializing in minimally invasive approaches, has significantly reduced postoperative pain and shortened hospital stays, greatly benefitting her patients and their families. 

Dr. Madni treats various afflictions, including gallstones, hernias, acid reflux, endocrine diseases (thyroid/parathyroid), and benign or malignant breast and colon diseases. In addition to her surgical expertise, Dr. Madni has received specialized training in Botox and filler injections. This additional skill allows her to offer her patients the added benefit of aesthetic treatments, showing that she cares not only for their health but also for their overall well-being, helping them look and feel more youthful and refreshed. 

Dr. Jon Harris joined the Rockwall Surgical Specialists team in 2018 and sees patients in the Rockwall, Rowlett and Forney locations.  Dr. Harris is certified by the American Board of Surgery and specializes in laparoscopic and robotic surgery.  He performs all manner of general surgery, including hernia repair, gallbladder surgery, weight loss surgery, thyroid surgery, gastro-esophageal reflux surgery, colorectal surgery, and many other procedures.

Dr. Jon Harris is a native of North Texas and grew up in Denton, TX.  He attended the University of Texas at Dallas where he received multiple academic scholarships.  He went on to attend medical school at the University of Texas Medical Branch in Galveston where he fell in love with the art of surgery.  Dr. Harris returned to Dallas to complete his general surgery residency training at Baylor University Medical Center.  During his residency, Dr. Harris participated in research to improve the fields of bariatric surgery, gastro-esophageal reflux surgery, and robotic surgery.

When he is not at work, Dr. Harris spends his free time with his wife and children.  Dr. Harris also enjoys swimming, golfing, and playing the guitar.

Dr. Joshua Mark joined the Rockwall Surgical Specialists team in 2020. He offers a broad array of surgical interventions to his patients in our Rowlett and Forney locations, including weight loss surgery, hernia repair, gastro-esophageal reflux surgery, colorectal surgery, gallbladder surgery, and many others. He specializes in minimally invasive techniques, including advanced robotic and laparoscopic surgery.

Dr. Joshua Mark received his undergraduate training at the University of Kansas, majoring in Spanish. While living abroad, he completed an advanced course in Medical Spanish and can speak Spanish fluently. He attended medical school at the University of Kansas before making his way to Dallas, Texas, to complete a general surgical residency at Baylor University Medical Center. His broad training experience in the DFW area afforded him the opportunity to care for and better understand the needs of a diverse patient population.

Throughout his training, he received numerous awards and honors, including Intern of the Year, and completed multiple publications in the field of trauma and acute care surgery. He also attended multiple advanced robotics training courses to further his abilities as a minimally invasive surgeon.

In his free time, Dr. Mark enjoys spending time with his wife and children. He is passionate about cooking, woodworking and spending time outdoors.

Phu C. Tran, MD, is a double Board Certified Plastic Surgeon. He is a Diplomate of the American Board of Plastic Surgery (ABPS) and the American Board of Surgery (ABS). He helps patients in California and Texas achieve natural-looking results aligned with their unique cosmetic goals. 

Dr. Tran’s philosophy is simple: to provide a personalized plastic surgery experience! He will work with you -- and your busy schedule -- to achieve the best result possible, tailored to you. His goal is to achieve a natural-looking result while minimizing complications. He does the full spectrum of Plastic Surgery, from cosmetic surgery of the face, breast, and body to complex reconstructive surgery for cancer, wounds, burns, and traumatic injuries. 

After receiving his medical degree from the renowned Baylor College of Medicine in Houston, Texas, Dr. Tran completed his General Surgery residency at the University of California San Francisco- Fresno (UCSF-Fresno) program. He then went on to complete his Plastic & Reconstructive Surgery training at Indiana University School of Medicine. 

Following his training, he returned to UCSF Fresno to teach residents and fellows in the General Surgery and Oral Maxillofacial Surgery program as a clinical faculty and currently holds an academic appointment as Volunteer Assistant Professor of Clinical Surgery for the world-renowned University of California, San Francisco (UCSF) School of Medicine. 

Board Certification matters! Trust your care to a Board-Certified Plastic Surgeon.

Dr. Scott A. deVilleneuve, MD, FACS, is a top-ranked general surgeon in McKinney, TX, providing patients at Surgical Associates of North Texas with the most advanced treatment options based on their specific needs. As a board-certified surgeon, Dr. deVilleneuve was trained as a general surgeon and is skilled in an array of traditional and minimally-invasive surgery techniques. He chose to focus his specialty on minimally invasive procedures and laparoscopic surgery, including hernia surgery, soft tissue surgery, treatment of pilonidal cysts, melanoma and skin cancer surgery and more.

Dr. deVilleneuve is a native Texan, born and raised in the Dallas/Fort Worth area. After earning his undergraduate degree at Texas A&M University, Dr. deVilleneuve completed his medical degree at U.T. Southwestern Medical School followed by a surgical residency at the University of Kansas Medical Center in Kansas City. He has been in private practice ever since. As a leading surgeon with experience in both minimally invasive and traditional surgical approaches, Dr. deVilleneuve works closely with each patient to ensure the most appropriate care for optimal results. He was recently named one of the Best Doctors in Collin County as a Laparoscopic Hernia Repair expert by D Magazine. In addition to treating patients at Surgical Associates of North Texas, Dr. deVilleneuve has operating privileges at Stonebridge Surgery Center and Methodist McKinney Hospital. He is a founding partner of Stonebridge Surgery Center and the President-elect of the Medical Executive Committee for Methodist McKinney Hospital.

Dr. deVilleneuve is a native Texan, born and raised in the Dallas/Fort Worth area, and lives in the Stonebridge Ranch community. In his spare time, Dr. deVilleneuve enjoys spending time with his wife and twin daughters. At home, he has become an expert in Disney Princesses, and is a regular attendee at prominent princess tea parties! He and his wife enjoy date nights at Jinbeh and he also helps with her pet-sitting business as an “official” dog walker, runner, and pooper-scooper. Dr. deVilleneuve enjoys golfing with his dad, Allen, and brother, Todd, and is proudly the title sponsor for the “Friends of deVille” Golf Tournament, which benefits the Hope Cottage Adoption Agency.

Dr. David Ritter founded Rockwall Surgical Specialists in 1998. Since then, he has helped over 15,000 patients in the communities of Rockwall, Rowlett and Greenville, Texas. As an expert in general surgery, Dr. Ritter performs the full range of surgical interventions, from hernia repair and colon surgery to gallbladder and thyroid surgery.

He also specializes in bariatric surgery and has established a comprehensive program of nutritional and lifestyle support for patients undergoing weight loss surgery. Whenever possible, he performs laparoscopic surgery, which benefits his patients by promoting quicker recovery and minimal scarring.

Dr. David Ritter graduated from Washington University in St. Louis, one of the top medical schools in the nation, then completed his surgical training at Baylor University Medical Center in Dallas.  Dr. Ritter is certified by the American Board of Surgery, a fellow of the American College of Surgeons, and a member of the American Society of Bariatric and Metabolic Surgeons.

Outside of work, Dr. Ritter enjoys spending time with his wife and their many children. He enjoys playing golf, exercising, and vacationing with his family.

Dr. Ashley Egan, certified by the American Board of Surgery, practices at Rockwall Surgical Specialists, where she provides the full array of general and bariatric surgery procedures. Dr. Egan’s patients in Rockwall, Rowlett, Greenville and Terrell, Texas, benefit from her specialty in laparoscopic and robotic surgery, whether they need thyroid surgery, a hernia repair, weight loss surgery, or any other type of surgical intervention.

Dr. Egan graduated summa cum laude from the University of Georgia, then completed medical school at the University of Texas Southwestern Medical School in Dallas. She stayed in Dallas to finish her internship and residency training in general surgery at the Baylor University Medical Center.

Throughout her education, Dr. Egan served in leadership positions and received numerous awards, scholarships, and honors, including SEC Student Athlete of the Year. She was the starting goalkeeper on the University of Georgia soccer team during her college years. She has enjoyed transitioning her competitiveness and desire to improve from the soccer field into the operating room. 

Outside of work, Dr. Egan enjoys playing golf, crossfit, and cooking.