General Surgery

Abid Mogannam, M.D., M.B.A., F.A.C.S.,

General Surgery, Vascular Surgery

Dr. Abid Christopher Mogannam, MD, MBA, FACS, is a board-certified vascular surgeon with extensive experience treating patients across the spectrum of vascular diseases. He provides both open and minimally invasive endovascular procedures to address arterial and venous conditions, with clinical practices located in San Leandro and San Ramon, California, as part of the Vascular Surgery Medical Group. Dr. Mogannam completed his undergraduate studies at Santa Clara University, graduating cum laude with a major in Combined Sciences and a minor in...

Annie Callahan, MD, FACS

General Surgery, Oncology

Dr. Annie Callahan is a board-certified surgical oncologist and general surgeon with extensive experience in complex cancer care and community-based surgical practice. She currently serves as a Surgical Oncologist with South Bay Surgeons in Torrance, California, a position she has held since February 2025, where she provides surgical oncology and general surgery services across three high-volume community hospitals in the Los Angeles area. Dr. Callahan earned her Bachelor of Arts in Anthropology/Biology from Mount Holyoke College, graduating magna cum laude...

Clara K. Zhu, MD

General Surgery

Dr. Clara K. Zhu is a general surgeon in private practice with Associated Surgeons of San Luis Obispo in Pismo Beach, California. Her practice includes abdominal wall, foregut, and colon surgery. She completed an Advanced GI/MIS and Bariatric Surgery Fellowship at the University of Texas at Houston, McGovern Medical School (August 2024–July 2025), where she also served as a Clinical Instructor of Surgery (August 2024–July 2025). Prior to fellowship, Dr. Zhu completed her residency in the Department of Surgery at...

Danny Lascano, MD

General Surgery

Dr. Danny Lascano is a board-certified general surgeon, fellowship-trained in surgical oncology, practicing in California’s Central Valley. His clinical work includes hernias, gallbladder disease, bowel pathology, and abdominal trauma. His clinical interests include melanoma and colorectal cancer. As a Qualified Medical Evaluator, Dr. Lascano performs medical-legal evaluations in California workers’ compensation matters. His medicolegal evaluations are written by a working surgeon, not a retired one. Dr. Lascano earned a B.A. in Biology from Swarthmore College and an M.D. from Columbia...

David E. Handman, M.D.

Critical Care Surgery, General Surgery, Trauma Surgery

Dr. David E. Handman is a highly experienced trauma and acute care surgeon with specialized expertise in critical care medicine. With over two decades of medical practice, he has provided comprehensive surgical and critical care services across multiple institutions, including Level 2 trauma centers, intensive care units, and private surgical practices. Dr. Handman earned his B.A. in Genetics and Development from Cornell University and his M.D. from the Sackler School of Medicine in Tel Aviv, Israel. He completed his general...

David L. Coffman, D.O., FACS

General Surgery

Dr. David L. Coffman is an accomplished osteopathic physician and surgeon with a distinguished career spanning over 25 years in general surgery, trauma, and surgical critical care. He currently serves as Associate Dean of Clinical Education and Associate Professor of Clinical Sciences at Touro University College of Osteopathic Medicine-California (TUCOM-CA), overseeing the clinical training of third- and fourth-year medical students, managing curriculum development, and ensuring excellence across clinical rotations and affiliated sites. Dr. Coffman’s clinical expertise includes general, trauma, and...

Joseph Robert Lee, MD, FACS

General Surgery

Dr. Joseph Robert Lee is an academic clinical surgeon with nearly two decades of experience in complex hepato-pancreato-biliary (HPB) surgery, abdominal transplantation, graduate medical education, and translational research. He currently serves as an Associate Professor of Surgery at East Tennessee State University’s Quillen College of Medicine, where he has practiced since 2012. His clinical expertise includes the management of benign and malignant liver, pancreas, and biliary disease. Over his career, he has performed more than 100 pancreaticoduodenectomies and over 300...

Joseph Yadegar, M.D.

General Surgery

Dr. Joseph Yadegar is a distinguished surgeon with over five decades of experience in general and gastrointestinal surgery. He is a Fellow of the Royal College of Surgeons (FRCS) and the American College of Surgeons (FACS), with board certification from the American Board of Surgery since 1981, most recently recertified in 2024. Dr. Yadegar completed his medical education at the University of London, with pre-clinical studies at King’s College and clinical training at Westminster Medical School. His extensive postgraduate training...

Michael A. Zadeh, M.D., F.A.C.S.

General Surgery

Dr. Michael A. Zadeh is a board-certified general surgeon and Fellow of the American College of Surgeons with over 15 years of experience delivering advanced surgical and aesthetic medical care in Southern California. He is the founder and CEO of Zadeh Surgical, Inc. in Sherman Oaks, where he provides comprehensive general surgery services with an emphasis on minimally invasive techniques that prioritize patient safety, faster recovery, and improved outcomes. In addition to his surgical practice, Dr. Zadeh is the founder...

Mort Rizvi, M.D., Q.M.E.

General Surgery, Hand Surgery, Plastic Surgery

Dr. Mort Rizvi is one of the leading plastic and cosmetic surgeons in the Greater Los Angeles area, but he is also known as one of Southern California’s most versatile surgeons of any type. Dr. Rizvi is board-certified both in plastic surgery and hand surgery. He is also a widely respected craniofacial, reconstructive, and cosmetic surgeon with an in-depth background in microsurgery. His training began in medical school at the University of Maryland, Baltimore, where he had also completed his...