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About Dr. Fischer

Trevan Fischer, MD, FACS, specializes in complex general surgical oncology and is certified by the American Board of Surgery. Dr. Fischer is an experienced surgeon who offers patients in Santa Monica, California, the latest surgical techniques, including minimally invasive surgeries, to help in the battle against cancer. His thorough understanding of the nature of cancer allows him to perform complex surgeries that help him diagnose and treat a number of conditions including breast cancer, skin cancers, and soft tissue sarcomas.

Outside of his private practice, Dr. Fischer continually strives to stay on top of the latest techniques in treating cancer and he’s involved with innovative clinical trials at the Saint John's Cancer Institute (formerly John Wayne Cancer Institute) in Santa Monica. He also serves as an assistant program director of the Donald L. Morton, MD Complex General Surgical Oncology Fellowship program at the Institute.

Dr. Fischer began his medical career at the University of Oklahoma in Oklahoma City, where he earned his medical degree in 2008. He completed his general surgery residency at the University of Florida in Gainesville in 2015, serving as chief resident from 2014-2015. In 2015, Dr. Fischer became a fellow at the John Wayne Cancer Institute where he completed two years of specialized surgical oncology training. 

To continue his education, Dr. Fischer is a member of the Society of Surgical Oncology, the American College of Surgeons, and the American Medical Association.

Over the course of his career, Dr. Fischer’s involvement in research and clinical trials has led to numerous articles, papers, and presentations in peer-reviewed publications and at national conferences.

Dr. Fischer is constantly exploring new ways to gain the upper hand on cancer through state-of-the-art surgical techniques and brings this experience to the Southern California area. He also accepts patients across all of Southern California, including Bakersfield, San Luis Obispo and Palm Springs. 

Dr. Fischer now has expanded his practice to Orange County and sees patients at both Providence St. Joseph and St. Jude. 

Dr. Elvira Klause, M.D., FACS, is a highly skilled, board-certified general surgeon specializing in hernia repair, hemorrhoids, laparoscopic surgery, abdominal surgery, robotic surgery, breast surgery, oncological procedures and dermatology procedures at her warm and personalized offices in San Clemente, CA. Praised by patients for her small-town hospitality and extreme quality of care, Dr. Klause brings over 15 years of experience in caring for the general, breast, advanced laparoscopic, robotic, colorectal, oncologic, skin cancer and hemorrhoid surgery needs of patients throughout South Orange County. 

Dr. Klause earned a bachelor of science degree from UCLA in 1989. She received her medical training at the University of Missouri in Columbia in 1993 and completed her residency in surgery in 1999 at Martin Luther King Hospital. After earning the Chief Resident Award, she was chosen for a fellowship in trauma surgery and critical care from Martin Luther King Hospital in 2000.

In addition to providing quality care to her patients, Dr. Klause was also a clinical preceptor for the University of Southern California and a clinical associate professor for the Western University of Health Sciences Physician Assistant program for many years.  She was also a member-at-large for Saddleback Memorial Medical Center from 2008–2010, and Chief of Surgery from 2013-2014 also was on the Cancer Committee and the Chart Review Committee.

Dr. Klause is a board-certified diplomat of the American Board of Surgery and a fellow of the American College of Surgeons. She holds hospital privileges at Saddleback Memorial Medical CenterLaguna Hills, Mission Hospital in Mission Viejo and Laguna Beach, Surgery Center at Saddleback, Foothill Ranch Surgery Center and the Laguna Niguel Surgery Center. She is a specialist at the highly advanced single-incision laparoscopic surgery method and Robotic assisted surgery.

Dr. Klause happily lives in South Orange County along with her loving husband and three children. In her free time, she loves being a supermom for her children by helping them with crafting adventures as well as cooking delicious gourmet meals.

Babak (Bobby) Eghbalieh, MD, serves patients at the premier aesthetics and wellness practice, BSN Regenerative Institute, located in Sherman Oaks, California. 

Dr. Eghbalieh finished his undergraduate degree at University Of California, Irvine, and completed his medical degree at the Sackler School Of Medicine through Tel Aviv University in Tel Aviv, Israel. He returned to the United States to complete his internship at SUNY Downstate Medical Center, and then his residency in general surgery at Fresno Medical Center in Fresno, California, through University of California, San Francisco (UCSF). Dr. Eghbalieh furthered his medical training in pancreatic and hepatobiliary surgery at the Cleveland Clinic. 

Having spent the last decade as academic faculty at UCSM’s department of surgery, Dr. Eghbalieh is now an associate clinical professor of surgery at the university. During his tenure at UCSF, he has served in many roles including Vice-Chair of Surgery, Director of Robotic Surgery, Co-Director of the HPB & GI Oncology, Cancer Liaison Physician (CLP) to the Commission of Cancer, Chair of the Cancer Committee, and the Chairman of the Executive Committee at the Community Medical Centers (CMC) in Fresno, California.

Currently, Dr. Eghbalieh is the Director of Hepatobiliary Pancreatic Surgery and the Director of Robotic Surgery at Providence Holy Cross Medical Center (PHCMC) in Mission Hills, California. He also serves as the Chair of the Cancer Committee and Cancer Liaison Physician for the cancer program at PHCMC. Throughout his years of experience, he’s developed an amazing passion for taking care of patients with cancer, providing state-of-the-art treatments and a personalized, multidisciplinary plan of care. 

He’s been recognized with a number of awards, including the American Cancer Society 2012 Physician Innovation Award for his work with pancreatic cancer patients; the Leukemia Lymphoma Society’s 2015 Man of the Year for Central California, and the Outstanding Leadership Award in 2017 for his role in the CMC Cancer Committee. His passion for treating pancreatic cancer patients also led him to serve as the Co-Chair of the Los Angeles Executive Leadership Committee for Pancreatic Cancer Action Network (PANCAN). Dr. Eghbalieh currently oversees and runs the only pancreatic cancer patient support group in the San Fernando Valley and one of three in all of Los Angeles. 

Dr. Eghbalieh has been very active in teaching the next generation of surgeons. He also has contributed to multiple research publications, abstracts, presentations at national meetings, and book chapters. To better serve those in his community, Dr. Eghbalieh is fluent in Persian, Spanish, Arabic, and English. 

Dr. Umesh Bhagia is a board-certified orthopedic surgeon serving patients at ARC Orthopedic Group in West Hills and Thousand Oaks, California. His practice is focused on hip, knee, and shoulder replacement surgeries.

As an orthopedic surgeon, Dr. Bhagia takes pride in having the opportunity to play a role in improving patient’s quality of life. He puts compassionate care first and stays informed on the latest techniques in the field, including minimally invasive surgery, hip resurfacing, and computer navigation-assisted surgery. He also believes it is important to discuss in detail diagnosis and treatment options with the patient and family to ensure the best decisions and recovery for his patients.

Outside the office, Dr. Bhagia enjoys spending time traveling. Originally from Baroda, India, he currently lives in the West Valley with his wife and daughter.

Dr. Bhagia is currently accepting new patients and welcomes them to schedule an appointment. Call ARC Orthopedic Group or book a consultation online today.

Dr. Ghobrial is a Board Certified General Surgeon. He has over 20 years of experience in trauma, critical care and general surgery, with a special interest in advanced laparoscopic procedures. He is a highly skilled physician who utilizes the most advanced techniques and technology available today, such as Robotic Assisted Hernia Repair, to ensure the best surgical outcome for each patient. Gergis Ghobrial, MD, is certified by the American Board of Surgery and is a Fellow of the Royal College of Surgeons in Ireland. He has been in private practice in Southern California since 1997. He is an active member at Long Beach Memorial Medical Center where he served as Chief of Surgery and is a member of the Board of Trustees.

Dr. Ghobrial is a Board Certified General Surgeon. He has over 20 years of experience in trauma, critical care and general surgery, with a special interest in advanced laparoscopic procedures. He is a highly skilled physician who utilizes the most advanced techniques and technology available today, such as Robotic Assisted Hernia Repair, to ensure the best surgical outcome for each patient. Gergis Ghobrial, MD, is certified by the American Board of Surgery and is a Fellow of the Royal College of Surgeons in Ireland. He has been in private practice in Southern California since 1997. He is an active member at Long Beach Memorial Medical Center where he served as Chief of Surgery and is a member of the Board of Trustees.

Donald Hastie, BC-FNP, is a highly experienced family physician at Genesis Surgery Center, with locations in Santa Ana and Foothill Ranch, California. With an impressive career spanning 25 years, Dr. Hastie has dedicated his life to providing exceptional medical care to his patients.

Dr. Hastie completed his undergraduate studies at Brigham Young University in Provo, Utah, in 1976. He then pursued further education at the University of Phoenix in Arizona, earning degrees in 1985 and 1989. His commitment to excellence in healthcare led him to the University of Utah in Salt Lake City, where he graduated in 1999.

Patients consistently praise Dr. Hastie for his extensive medical knowledge and compassionate approach. His blend of expertise and empathy makes him a trusted and beloved physician in his community. Whether you're seeking routine family care or specialized treatment, Dr. Hastie is committed to ensuring the well-being of his patients at Genesis Surgery Center in Santa Ana and Foothill Ranch, California.