Cardiologist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Chiropractor providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Dentist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Dermatologist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Family Physician providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
OB-GYN providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Ophthalmologist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Orthopedic Surgeon providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Pediatrician providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Physical Therapist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Podiatrist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Psychiatrist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Ndubuisi Okafor, MD, is a board-certified internal medicine physician with over 20 years of experience. At his practice, Okafor Medical Associates, located in Washington, DC, Dr. Okafor offers patients compassionate care for a variety of conditions including chronic disease management, ADHD, and internal medicine concerns as a leading primary care physician.
Dr. Okafor obtained his medical degree from the Howard University Hospital and is board-certified by the American Board of Internal Medicine. He is also specially trained in Advanced Trauma Life Support and Advanced Cardiovascular Life Support.
Dr. Okafor is a registered Civil Surgeon with the United States Center for Immigration Services, so he can provide Immigration Medical examinations with all the required tests in the facility. In addition, is a Registered Certified Medical Examiner with the Federal Motor Carrier Safety Administration, so he can provide medical examination and certification for commercial motor vehicle drivers.
When he is not treating his patients, Dr. Okafor enjoys spending time with his family and pursuing his hobbies which include football, soccer, and running. Dr. Okafor also speaks English, Ibo, Yoruba, and Hausa.
He looks forward to meeting new patients and giving them the best care possible.
Dabo Xu, MD, is a board-certified physician in gastroenterology, hepatology, and internal medicine at the Gastro Center of Maryland, with locations in Annapolis, Columbia, Olney, Riverdale, Timonium and Gaithersburg, Maryland.
Dr. Xu treats a wide variety of conditions at the practice, including gastroesophageal reflux disease (GERD), ulcerative colitis and Crohn’s disease, irritable bowel syndrome (IBS), celiac disease, colon cancer, liver disease, and other gastrointestinal conditions.
Dr. Xu completed his medical residency at St. Agnes Hospital, as well as a gastroenterology fellowship at the University of Michigan. He has conducted clinical and translational research on several topics, such as GERD, intestinal inflammation, liver diseases and cancers, and gastrointestinal pharmacology.His works were published in the most prestigious gastroenterology journals and presented at national and international medical conferences.
He has more than 20 years of clinical experience in gastroenterology and hepatology. Dr. Xu has a special interest in preventive care, often working alongside patients to prevent disease and improve their quality of life through precise and effective personalized treatments.
With a passion and dedication to patient experiences, Dr. Xu believes it’s important to build relationships with those in his care and enjoys helping patients find better health and wellness.
David Bauder, PA-C: CEO, Assistant Medical Director, Co-Founder, and Author
David Bauder, PA-C, serves as the CEO, Assistant Medical Director, and co-founder of Weight Loss & Vitality, with locations in Manassas, Alexandria, Stafford, Washington, D.C., and Gaithersburg, Maryland. With over 30 years of diverse medical experience, David is dedicated to helping patients achieve their health and wellness goals, enhancing both their physical and mental well-being for a higher quality of life.
Education and Professional Development
David’s dedication to advancing healthcare is reflected in his extensive academic and professional training. He earned his physician assistant degree from the University of Texas Health Science Center at San Antonio and further advanced his expertise by completing a graduate program in Physician Assistant Studies at the University of Nebraska Health Science Center in Omaha.
David also completed the prestigious RAND Arroyo Research Fellowship, where he contributed to cutting-edge studies aimed at improving health systems and policies. This fellowship reflects his commitment to leveraging research and innovation to enhance healthcare delivery.
Throughout his career, David has cultivated expertise across multiple medical disciplines, including:
Family Medicine
Emergency Medicine
Expeditionary Medicine
General Surgery
Urgent Care
Functional and Integrative Medicine
Podiatry
Leadership and Vision as CEO
As the CEO of Weight Loss & Vitality, David has guided the organization’s growth into a leading provider of medical weight loss, hormone therapy, functional medicine, and aesthetic treatments. His leadership ensures that the practice remains at the forefront of medical innovation, offering cutting-edge solutions tailored to the individual needs of every patient.
Under David’s guidance, Weight Loss & Vitality has expanded to five locations, providing exceptional healthcare across Virginia, Maryland, and Washington, D.C.
Distinguished Military Career
David proudly served for 27 years in the United States Army, excelling in both clinical and leadership roles. His military service included:
Three combat tours in Southwest Asia, where he provided critical medical care in high-pressure environments.
Executive Officer of the Army Medical Specialist Corps at Fort Sam Houston, Texas, overseeing medical operations and advancing healthcare initiatives.
Strategic Advisor at the Defense Health Headquarters in Falls Church, Virginia, contributing to the development of military health policies and programs.
David’s military career reflects his unwavering dedication to service and his ability to lead in complex, high-stakes situations.
Author of "Thrive Beyond Your Limits"
David is the author of the newly released book, “Thrive Beyond Your Limits,” now available on Amazon. In this inspiring guide, he shares actionable strategies for achieving optimal health, weight loss, overcoming challenges, and living a more fulfilling life. Drawing from his decades of medical experience and personal dedication to fitness, David empowers readers to unlock their full potential.
A Personal Commitment to Health and Fitness
David’s passion for health extends into his personal life. An avid cyclist, he has competed in national cycling events for over a decade. His commitment to fitness mirrors his professional advocacy for a healthy lifestyle, inspiring patients to prioritize wellness in their own lives.
Why Patients Trust David Bauder
Patients value David’s unique combination of:
30 years of medical expertise across a range of disciplines.
Leadership as the CEO of Weight Loss & Vitality, driving innovation and patient-centered care.
The RAND Arroyo Research Fellowship, showcasing his dedication to research-driven healthcare improvements.
Compassionate, tailored care that empowers patients to achieve lasting results.
A proven commitment to health, fitness, and personal growth, both professionally and personally.
Inspiring Health, Fitness, and Vitality
As a dedicated healthcare professional, CEO, and author, David Bauder continues to guide individuals toward a healthier, more fulfilling future. Whether through personalized care at Weight Loss & Vitality or his book, “Thrive Beyond Your Limits,” David remains a pivotal figure in helping others reclaim their vitality and confidence.
Schedule Your Consultation with David Bauder, PA-C
Take the first step toward a healthier, more fulfilling life. Schedule a consultation with David Bauder, PA-C, at Weight Loss & Vitality today and experience his expertise, leadership, and personalized approach to health and wellness.
Dr. Jameel Shareef joined Gastroenterology Associates of Fredericksburg in October of 2023. Dr. Shareef received his Doctor of Osteopathic Medicine degree from the Philadelphia College of Osteopathic Medicine. He completed his Internal Medicine residency and Gastroenterology fellowship at Kent Hospital/Brown University in Warwick, Rhode Island.
Dr. Shareef is Board Certified in Internal Medicine and Gastroenterology. He is proficient in the diagnostic and
therapeutic procedures of upper endoscopy (EGD),
variceal banding, colonoscopy, flexible sigmoidoscopy, video capsule endoscopy and interpretation of Fibroscan (elastography) of the liver. Dr. Shareef’s practice encompasses the spectrum of general gastroenterological disease, including colon cancer screening, anemia/bleeding of the GI tract, irritable bowel syndrome (IBS), irritable bowel disease (IBD) and liver disease.
Dr. Shareef is credentialed with most insurance plans and sees patients in both our Fredericksburg and Stafford office locations. He performs procedures at the Fredericksburg Endoscopy Center, Mary Washington Hospital and Stafford Hospital.
Narayan Dharel, MD, PhD, joined Gastroenterology Associates of Fredericksburg – which has locations in Fredericksburg and Stafford, Virginia – in July 2015 after completing a fellowship in gastroenterology and transplant hepatology at Virginia Commonwealth University.
Dr. Dharel completed his residency training at Cornell University affiliate Wyckoff Heights Medical Center in New York. Prior to moving to Virginia, he worked for four years as an attending physician at Beth Israel Deaconess Medical Center and Massachusetts General Hospital of Harvard Medical School at Boston.
Dr. Dharel is triple Board Certified in internal medicine, gastroenterology, and transplant hepatology. Dr. Dharel is proficient in the diagnostic and therapeutic endoscopic procedures, including EGD; esophageal dilation; screening, surveillance, and diagnostic colonoscopy; hemorrhoid banding; luminal stenting; video capsule endoscopy; and radiofrequency ablation (RFA) of Barrett's. His areas of interest include colon cancer screening and prevention, GERD, Barrett's, Fatty Liver/NASH, and other liver diseases.
Dr. Dharel has been deeply involved in scientific research, has presented in national and international meetings, received numerous awards, and has authored several original articles, reviews, and book chapters in the field of gastroenterology and hepatology. Some of his most recent articles can be accessed via Pubmed.
Dr. Dharel currently serves as the Medical Director of Endoscopy at Mary Washington Hospital and the Medical Director of the Fredericksburg Endoscopy Center in Fredericksburg. He is a visiting faculty member of Virginia Commonwealth University at the Division of Gastroenterology, Hepatology, and Nutrition and also serves as a preceptor for the Virginia College of Osteopathic Medicine. Dr. Dharel was recognized as one of the region's top gastroenterologists by Northern Virginia Magazine in 2020.
Dr. Dharel is a member of the American Gastroenterological Association, American College of Gastroenterology, American Society of Gastrointestinal Endoscopy, and American Association for the Study of Liver Diseases.
Dabo Xu, MD, is a board-certified physician in gastroenterology, hepatology, and internal medicine at the Gastro Center of Maryland, with locations in Annapolis, Columbia, Olney, Riverdale, Timonium and Gaithersburg, Maryland.
Dr. Xu treats a wide variety of conditions at the practice, including gastroesophageal reflux disease (GERD), ulcerative colitis and Crohn’s disease, irritable bowel syndrome (IBS), celiac disease, colon cancer, liver disease, and other gastrointestinal conditions.
Dr. Xu completed his medical residency at St. Agnes Hospital, as well as a gastroenterology fellowship at the University of Michigan. He has conducted clinical and translational research on several topics, such as GERD, intestinal inflammation, liver diseases and cancers, and gastrointestinal pharmacology.His works were published in the most prestigious gastroenterology journals and presented at national and international medical conferences.
He has more than 20 years of clinical experience in gastroenterology and hepatology. Dr. Xu has a special interest in preventive care, often working alongside patients to prevent disease and improve their quality of life through precise and effective personalized treatments.
With a passion and dedication to patient experiences, Dr. Xu believes it’s important to build relationships with those in his care and enjoys helping patients find better health and wellness.
Dr. Thi Khuc, MD, is a board-certified physician specializing in Gastroenterology and Hepatology at Gastro Center of Maryland's location in Riverdale, Maryland. Trained with expertise in evidence-based medicine and clinical research by national and international authorities in the field, Dr. Khuc is committed to providing quality, personalized patient care. Dr. Khuc values her patients’ opinions in the medical decision-making process.
Dr. Khuc completed her medical degree at the University of Virginia, followed by an Internal Medicine residency at Loma Linda University in California. Thereafter, she completed her Gastroenterology and Hepatology fellowship under the Clinical Scholars Program at the University of Maryland and Mercy Medical Center in Baltimore, MD. She was elected as a 2023 American Gastroenterological Association (AGA) Innovations Fellow for the Center for GI Innovation and Technology and is currently a member of the AGA and American College of Gastroenterology (ACG).
Dr. Khuc is skilled in colonoscopy, endoscopy, video capsule endoscopy and esophageal manometry and breath testing interpretation. She treats a wide variety of gastrointestinal disorders including colorectal cancer screening, irritable bowel syndrome (IBS), acid reflux (GERD), peptic ulcer disease, microscopic colitis, eosinophilic esophagitis (EoE), constipation, infectious diarrheal disorders, and inflammatory bowel disease (IBD).
In her spare time, Dr. Khuc enjoys painting, traveling, and trying new ice cream flavors with her family and friends.
Dabo Xu, MD, is a board-certified physician in gastroenterology, hepatology, and internal medicine at the Gastro Center of Maryland, with locations in Annapolis, Columbia, Olney, Riverdale, Timonium and Gaithersburg, Maryland.
Dr. Xu treats a wide variety of conditions at the practice, including gastroesophageal reflux disease (GERD), ulcerative colitis and Crohn’s disease, irritable bowel syndrome (IBS), celiac disease, colon cancer, liver disease, and other gastrointestinal conditions.
Dr. Xu completed his medical residency at St. Agnes Hospital, as well as a gastroenterology fellowship at the University of Michigan. He has conducted clinical and translational research on several topics, such as GERD, intestinal inflammation, liver diseases and cancers, and gastrointestinal pharmacology.His works were published in the most prestigious gastroenterology journals and presented at national and international medical conferences.
He has more than 20 years of clinical experience in gastroenterology and hepatology. Dr. Xu has a special interest in preventive care, often working alongside patients to prevent disease and improve their quality of life through precise and effective personalized treatments.
With a passion and dedication to patient experiences, Dr. Xu believes it’s important to build relationships with those in his care and enjoys helping patients find better health and wellness.
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