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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, Los Angeles, Fullerton, and Orange, 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. 

Y.H. Salem, MD, FACS, runs a state-of-the-art medical practice specializing in vascular surgery, acid reflux surgery, and general surgery, at his offices in Huntington Beach, Foothill Ranch, and Anaheim, California.

With over 20 years of professional experience under his belt, he leads a friendly staff and employs cutting-edge technology to provide cosmetic and health benefits to patients dealing with varicose veins and spider veins stemming from a variety of causes.

At the practice’s warm, welcoming offices, they provide a host of innovative treatments for vascular disease, including ultrasound-guided procedures, injections, and laser treatments. Dr. Salem always takes considerable effort to minimize any scarring following medical procedures and maintains constant monitoring to evaluate the progress of his patients through recovery. They’re also highly skilled when it comes to providing surgical treatment for many other conditions, such as intestinal obstructions, lipomas, gallstones, and appendicitis.

One of the central tenets of Dr. Salem’s care is spending as much time as possible with each patient to develop individualized treatment plans and to allow time for addressing questions and concerns. Patient education is also essential and foundational to the practice’s overall approach to care, as Dr. Salem and the staff help each patient understand everything about their condition and treatment options.

If you’d like to schedule an appointment with Dr. Salem to learn more about the practice and what it can offer you, call or use the online booking tool today.

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.

Karen Quirk, MD, FACS, is a highly-skilled vascular and endovascular surgeon on the team of providers at Coastal Vascular Center in Oxnard, Camarillo, 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.

Kevin M. Major, MD, FACS, is a board-certified Vascular and Endovascular Surgeon with over 20 years of experience. He currently serves the community of Ventura County on the team of providers at Coastal Vascular Center, which has three state-of-the-art clinics in Oxnard, Camarillo, and Simi Valley, California. 

Dr. Major graduated from the University of San Diego in 1992 with a degree in Biochemistry and a minor in Business Administration. He went on to earn his medical degree in 1998 from the Medical College of Ohio (now known as the University of Toledo College of Medicine and Life Sciences) in Toledo.

Dr. Major returned to Southern California for his post-graduate training, completing a residency in General Surgery at Cedars-Sinai Medical Center in Los Angeles, where he also completed additional fellowship training in Surgical Critical Care. He went on to complete fellowship in Vascular Surgery at the University of Southern California (USC) in Los Angeles.

Dr. Major holds certification from the American Board of Surgery in General Surgery, Surgical Critical Care, and Vascular Surgery. He is also a fellow of the American College of Surgeons. 

Dr. Major has recently served as the chairman of the surgery department at Community Memorial Hospital in Ventura, California. He retains privileges at Community Memorial Hospital, St. John’s Regional Medical Center in Oxnard, Pleasant Valley Hospital in Camarillo, and Adventist Health Simi Valley.

Dr. Major looks forward to getting to know his patients at Coastal Vascular Center and keeping them in excellent health.

Gregory Albaugh, DO, FACS, is a board-certified vascular and endovascular surgeon who’s been providing Ventura County with exceptional medical care since 2004. He’s the founding member and managing partner of Coastal Vascular Center, which has three convenient locations in Oxnard, Camarillo, and Simi Valley, California.

Dr. Albaugh completed a fellowship in vascular surgery at Virginia Commonwealth University in Richmond. He’s a fellow of the American College of Surgeons and holds board certifications in general surgery and vascular surgery. Prior to founding Coastal Vascular Center, he was the medical director at St. John’s Regional Medical Center Peripheral Vascular Laboratory and the Pleasant Valley Wound Care Center in Camarillo, California.

In his work at Coastal Vascular Center, Dr. Albaugh is regarded as a regional expert in complex limb revascularization, carotid endarterectomy, endovascular and open aortic surgery, wound care, and the treatment of varicose veins and venous insufficiency. 

Outside of his medical career, Dr. Albaugh is a member of the United States Navy Reserve, where he serves as a commander and has a variety of awards and citations. He lives with his wife, Anne, in Ventura County. He looks forward to improving his patients’ quality of life at Coastal Vascular Center.

Sarvenaz Nouri, MD, is a board-certified general surgeon with fellowship training in weight loss and bariatric surgery. She is committed to helping patients at Murrieta Valley Surgery Associates achieve long-term weight loss success by providing the most effective and safe surgical techniques. 

Dr. Nouri understands that each patient’s weight loss journey is unique and partners with them to choose a weight loss surgery that best fits their goals, leading to long-lasting weight loss and achieving their best personal health outcomes.

She believes it is a privilege to be part of each of her patient’s weight loss journey. She loves witnessing first-hand how bariatric surgery transforms patients’ lives and improves their health. In addition to performing weight loss surgery, Dr. Nouri performs a variety of abdominal surgeries, including reflux surgery, gallbladder removal surgery, and hernia repair.

Dr. Nouri earned her medical degree from Drexel University College of Medicine in Philadelphia. She completed her residency training in general surgery at Riverside University Health Systems in Southern California. She obtained fellowship training in robotics and bariatric surgery at Reading Tower Health Hospital in Pennsylvania. She also serves as a Robotics medical director at Corona Regional Medical Center.

Outside of work, Dr. Nouri enjoys weightlifting, sailing in the Pacific Ocean, and watching crime dramas on Netflix.

Dr. Joseph Ku helps men and women in Riverside, California, improve their appearance at Precision Plastic Surgery. His masterful surgical skills and advanced techniques have earned the admiration of both his patients and his colleagues.

Dr. Ku earned his biochemistry and cell biology majors and Spanish literature minor in just three years from the University of California San Diego (UCSD). He also received his medical degree from UCSD in 2000. While at the university, Dr. Ku entered the prestigious Phi Beta Kappa organization in honor of his high academic achievements.

After earning his medical degree, Dr. Ku completed his five-year general surgery program at UCSD. His budding passion for plastic surgery led him to conclude his residency in plastic and reconstructive surgery in Salt Lake City, Utah, where he served as Chief Resident in his final year.

His native roots of Southern California drew Dr. Ku back to Riverside, where he’s established a network of appreciative patients as President of Precision Plastic Surgery.

Dr. Ku holds double board certifications from the American Board of Plastic Surgery and the American Board of Surgery. He became a diplomate of the American Board of Surgery during his postgraduate surgery internship.

Dr. Ku is a current member of the American Society of Plastic Surgeons, American Medical Association, California Medical Association, and Riverside Medical Association. He’s also a Fellow of the American College of Surgeons. He has affiliations with the Riverside Community College, Corona Regional Medical Center, and Parkview Community Hospital.

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 a consultant for various regulatory agencies, 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 Super Doctors list. He currently serves as the elected Chair of Surgery at Los Robles Medical Center.

About Dr. Krahn

Western Bariatric, AMC is a bariatric surgery provider serving patients in the San Bernardino, Riverside, and surrounding areas of Southern California. Available surgeries and treatments include Roux En Y Laparoscopic Gastric Bypass, Sleeve Gastrectomy, Lap Band, Medical Weight Loss, Body Contouring, and Hiatal Hernia Surgery. Douglas Krahn, MD, FACS is fellowship trained in general surgery and specializes in bariatric surgery. He is strongly dedicated to their patients and want to help each person live the healthy life that they deserve.

When patients arrive at Western Bariatric, AMC, the first goal is helping each person to determine their weight loss needs and goals. The doctors and staff at Western Bariatric, AMC can customize a weight loss plan for each person, whether it involves non-surgical options like the medical weight loss plan or surgical options like laparoscopic gastric bypass. Call to arrange a consultation anytime!