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.
Karen Quirk, MD, FACS, is a highly-skilled vascular and endovascular surgeon on the team of providers at Coastal Vascular Center in Oxnard, Camarillo, Thousand Oaks, and Simi Valley, California. She’s one of the few female surgeons in the field of vascular surgery, which only has a 10% female population nationwide.
Dr. Quirk was born and raised in South Korea and immigrated to America as a young teen. She graduated on the dean’s honor list with a Bachelor of Arts in Molecular Cell Biology from the University of California in Berkeley. After graduating, she spent some time conducting basic scientific research on a therapeutic recombinant proteinase before going to medical school. Dr. Quirk earned her medical degree from the University of California Irvine School of Medicine, graduating with a variety of honors and research awards.
She went on to discover her love and passion for surgery and completed an internship and residency in general surgery at Harbor–University of California Los Angeles Medical Center. She found herself particularly drawn to vascular surgery because of the field’s technical elegance, its capacity for lifelong relationships with patients, and its challenges in managing complex vascular diseases. This passion bloomed during her vascular surgery fellowship at the University of California San Diego Medical Center and continues to drive her in practice today.
Dr. Quirk has a reputation for outstanding surgical skills and compassionate patient care. She’s a fellow of the American College of Surgeons and the Society for Vascular Surgery and is one of the few surgeons in Southern California capable of using fenestrated stent-graft technology to perform minimally invasive complex aortic aneurysm repairs. She manages the full spectrum of vascular disease at Coastal Vascular Center.
Outside of work, Dr. Quirk enjoys spending time with her two wonderful boys.
“I have only had a consultation so far; but Dr. Rahgozar took time to thoroughly address my questions, and outline the potential treatment options. My daughter, who has autism, had to come with me and has a ton of energy. The doctor was extremely patient and accommodating. I sincerely appreciate his kind manner.”
Paymon Rahgozar, MD
Surgeon
455 E. Thousand Oaks Blvd
Suite 106
Thousand Oaks, CA 91360
5.0(2)
Paul Tran, MD
Plastic and Reconstructive Surgeon 25.1 mi
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.
Board-certified general and bariatric surgeon Amir Mehran, MD, FACS, FASMBS, provides exemplary bariatric and general surgery at University Bariatrics in Thousand Oaks, California.
A Duke University Medical School graduate, Dr. Mehran completed his surgery residency in New Jersey, followed by a Minimally Invasive Surgery (MIS) and Bariatric fellowship at the Cleveland Clinic in Florida. He served as the UCLA Bariatric Surgery Program Chief for several years, prior to establishing his own surgical program in the Thousand Oaks area.
The name University Bariatrics reflects his goal of combining the integrity and values of his past academic career, with a new private practice that is focused on serving the community around him. Dr. Mehran has contributed to over 160 publications and presentations and has mentored numerous fellows, residents, and medical students.
He is a member of multiple surgical societies and has served as the chair of surgery at Los Robles Medical Center. He has been a consultant for various regulatory agencies such as the Medical Board of California, as well as various surgical journals, the media, and the medical industry. In recognition of his dedication and efforts, his peers have repeatedly elected him to the Southern California Doctors list.
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.
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, Los Angeles and Orange, California, the latest surgical techniques 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 melanoma, other skin cancers, and soft tissue sarcomas.
Outside of his practice, Dr. Fischer continually strives to stay on top of the latest techniques in treating cancer, and he is actively involved with innovative clinical trials at The Angeles Clinic and Research Institute, a Cedars-Sinai affiliate. He also involved in continuing training the next generation of surgical oncologist as faculty member of Cedars Complex General Surgical Oncology Fellowship program. Cedars-Sinai is consistently ranked among the nation’s top hospitals, recognized for pioneering research, advanced technology, and world-class patient care—providing an unparalleled environment for cancer innovation and collaboration.
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 has continued his practice in Orange County and sees patients at Providence St. Joseph.
“Dr. Fischer is an outstanding doctor. I highly recommend him for so many reasons. He is a respectful, intelligent, kind and an all around great doctor.
I admire his expertise and professionalism. ”
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.
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