The 20 Best Gastric Bypass Doctors in California, US

Find the Experts and Specialists who perform Gastric Bypass

The 20 Best Gastric Bypass Doctors in California, US

Last Updated: 02/22/2026

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MediFind found 196 doctor with experience in Gastric Bypass near California, US. Of these, 149 are Experienced, 35 are Advanced and 12 are Distinguished.

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196 providers found
    Jonathan T. Carter
    Distinguished in Gastric Bypass
    General Surgery
    Distinguished in Gastric Bypass
    General Surgery

    Bariatric Surgery Center

    400 Parnassus Ave., Second Floor, 
    San Francisco, CA 
    Languages Spoken:
    English, Arabic
    Accepting New Patients
    Offers Telehealth

    Dr. Jonathan Carter is a surgeon who specializes in minimally invasive, advanced approaches such as laparoscopic and robotic surgery to treat abdominal conditions. He cares for patients with hernias and disorders of the esophagus, gallbladder, stomach and intestines. He is also a bariatric surgeon and a member of the acute care surgery program, which provides surgical care in emergencies. After earning his medical degree at Stanford University School of Medicine, Carter completed a residency in surgery and a fellowship in advanced laparoscopic and bariatric surgery at UCSF. Carter is a fellow of the American College of Surgeons and American Society for Metabolic and Bariatric Surgery. As a UCSF faculty member, Carter has authored more than 60 peer-reviewed research papers in the subject areas of esophageal disease, bariatric surgery, hernia and medical information science. Carter received the 2008 and 2015 UCSF Haile T. Debas Academy of Medical Educators' Excellence in Teaching Awards, as well as UCSF's annual patient safety award in 2014 and 2016. He received the Julius R. Krevans Award for patient care at UCSF, as well as the prestigious Fred H. and Esther E. Nusz Achievement Award. See a UCTV video of Carter, who discusses Obesity in America – Diet, Drugs or Surgery . Dr. Carter is rated as a Distinguished provider by MediFind in Gastric Bypass. His top areas of expertise are Obesity, Hernia, Choledocholithiasis, Gastric Bypass, and Sleeve Gastrectomy.

    Stanley J. Rogers
    Distinguished in Gastric Bypass
    General Surgery
    Distinguished in Gastric Bypass
    General Surgery

    University California San Francisco - UCSF

    400 Parnassus Ave, 2nd Fl General Surgery Box 0338, 
    San Francisco, CA 
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    caring, good listener, dedicated, intelligent, compassionate, committed, healing and reassuring. Dr. Rogers is rated as a Distinguished provider by MediFind in Gastric Bypass. His top areas of expertise are Obesity, Hiatal Hernia, Gastroesophageal Reflux Disease (GERD), Sleeve Gastrectomy, and Gastric Bypass.

    Andrew Posselt
    Distinguished in Gastric Bypass
    Gastroenterology | Transplant Surgery
    Distinguished in Gastric Bypass
    Gastroenterology | Transplant Surgery

    Bariatric Surgery Center

    400 Parnassus Ave., Second Floor, 
    San Francisco, CA 
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Dr. Andrew Posselt, a bariatric and transplant surgeon, is co-director of the Pancreatic Islet Transplantation Program at UCSF Medical Center. He specializes in adult and pediatric kidney, liver and pancreas transplantation, as well as laparoscopic and open (traditional) bariatric surgery. In addition to caring for patients, Posselt conducts research on pancreatic islet cell transplantation, a procedure that can allow people with type 1 diabetes to discontinue insulin therapy. He also investigates mechanisms by which a transplant recipient's body rejects or tolerates tissue from a donor who isn't genetically identical, and he studies the metabolic and biochemical consequences of bariatric surgery. Posselt earned his medical degree and a doctorate in immunology from the University of Pennsylvania. He completed residencies in internal medicine and general surgery as well as a transplant fellowship at UCSF, before joining the staff in 2003. Posselt is a member of several professional and honorary societies, and has given presentations on transplant issues related to patient care and research. At UCSF, he supervises residents and fellows in transplant services and general surgery. Dr. Posselt is rated as a Distinguished provider by MediFind in Gastric Bypass. His top areas of expertise are Obesity, Chronic Pancreatitis, Childhood Pancreatitis, Islet Cell Transplantation, and Sleeve Gastrectomy.

    Learn about our expert tiers
    Experienced in Gastric Bypass
    Experienced in Gastric Bypass

    Regents Of The University Of California

    200 W Arbor Dr, 
    San Diego, CA 
    Languages Spoken:
    English
    Offers Telehealth

    Manoj Monga is a Urologist in San Diego, California. Dr. Monga is rated as an Experienced provider by MediFind in Gastric Bypass. His top areas of expertise are Kidney Stones, Urinary Tract Infection (UTI), Perirenal Abscess, Lithotripsy, and Ureteroscopy.

    Distinguished in Gastric Bypass
    Gastroenterology
    Distinguished in Gastric Bypass
    Gastroenterology

    Community Health Partners

    205 E River Park Cir, Suite 460, 
    Fresno, CA 
    Languages Spoken:
    English
    Offers Telehealth

    Kelvin Higa is a Gastroenterologist in Fresno, California. Dr. Higa is rated as a Distinguished provider by MediFind in Gastric Bypass. His top areas of expertise are Obesity, Short Bowel Syndrome, Small Bowel Bacterial Overgrowth, Gastrectomy, and Gastric Bypass.

    Distinguished in Gastric Bypass
    General Surgery
    Distinguished in Gastric Bypass
    General Surgery

    Stanford Health Care

    300 Pasteur Dr, 
    Stanford, CA 
    Languages Spoken:
    English
    Offers Telehealth

    Dan Azagury is a General Surgeon in Stanford, California. Dr. Azagury is rated as a Distinguished provider by MediFind in Gastric Bypass. His top areas of expertise are Obesity, Obesity in Children, Gastroesophageal Reflux Disease (GERD), Gastric Bypass, and Sleeve Gastrectomy.

    Distinguished in Gastric Bypass
    General Surgery
    Distinguished in Gastric Bypass
    General Surgery

    UC San Diego

    200 W Arbor Dr, 
    San Diego, CA 
    Languages Spoken:
    English

    Santiago Horgan is a General Surgeon in San Diego, California. Dr. Horgan is rated as a Distinguished provider by MediFind in Gastric Bypass. His top areas of expertise are Hiatal Hernia, Hernia, Diaphragmatic Hernia, Gallbladder Removal, and Endoscopy.

    Distinguished in Gastric Bypass
    Endocrinology
    Distinguished in Gastric Bypass
    Endocrinology

    San Francisco VA Medical Center

    4150 Clement St, 
    San Francisco, CA 
    Languages Spoken:
    English

    Anne Schafer is a primary care provider, practicing in Endocrinologist in San Francisco, California. Dr. Schafer is rated as a Distinguished provider by MediFind in Gastric Bypass. Her top areas of expertise are Osteoporosis, Obesity, Postmenopausal Osteoporosis, Gastric Bypass, and Sleeve Gastrectomy.

    Distinguished in Gastric Bypass
    General Surgery
    Distinguished in Gastric Bypass
    General Surgery

    Community Health Partners

    205 E River Park Cir, Suite 460, 
    Fresno, CA 
    Languages Spoken:
    English
    Offers Telehealth

    Pearl Ma is a General Surgeon in Fresno, California. Dr. Ma is rated as a Distinguished provider by MediFind in Gastric Bypass. Her top areas of expertise are Obesity, Short Bowel Syndrome, Malnutrition, Gastric Bypass, and Endoscopy.

    Distinguished in Gastric Bypass
    General Surgery
    Distinguished in Gastric Bypass
    General Surgery

    Regents Of The University Of California

    200 W Arbor Dr, 
    San Diego, CA 
    Languages Spoken:
    English

    Bryan Sandler is a General Surgeon in San Diego, California. Dr. Sandler is rated as a Distinguished provider by MediFind in Gastric Bypass. His top areas of expertise are Hernia, Hiatal Hernia, Diaphragmatic Hernia, Gallbladder Removal, and Gastrectomy.

    Distinguished in Gastric Bypass
    General Surgery
    Distinguished in Gastric Bypass
    General Surgery

    Regents Of The University Of California

    9350 Campus Point Dr, 
    La Jolla, CA 
    Languages Spoken:
    English
    Offers Telehealth

    Garth Jacobsen is a General Surgeon in La Jolla, California. Dr. Jacobsen is rated as a Distinguished provider by MediFind in Gastric Bypass. His top areas of expertise are Hernia, Hiatal Hernia, Diaphragmatic Hernia, Gallbladder Removal, and Gastrectomy.

    Distinguished in Gastric Bypass
    General Surgery
    Distinguished in Gastric Bypass
    General Surgery

    University Surgeons Of Orange A Medical Group

    101 The City Dr S, 
    Orange, CA 
    Languages Spoken:
    English
    Offers Telehealth

    Ninh Nguyen is a General Surgeon in Orange, California. Dr. Nguyen is rated as a Distinguished provider by MediFind in Gastric Bypass. His top areas of expertise are Hiatal Hernia, Hernia, Obesity, Endoscopy, and Gastric Bypass.

    Distinguished in Gastric Bypass
    Gastroenterology
    Distinguished in Gastric Bypass
    Gastroenterology

    Cedars-Sinai Pancreatic Biliary

    8720 Beverly Blvd, 
    West Hollywood, CA 
    Languages Spoken:
    English
    Offers Telehealth

    Rabindra Watson is a Gastroenterologist in West Hollywood, California. Dr. Watson is rated as a Distinguished provider by MediFind in Gastric Bypass. His top areas of expertise are Pancreatic Cancer, Pancreatic Pseudocyst, Bile Duct Obstruction, Endoscopy, and Gastric Bypass.

    Advanced in Gastric Bypass
    Endocrinology
    Advanced in Gastric Bypass
    Endocrinology

    Office

    757 Westwood Plz Ste 7501, 
    Los Angeles, CA 
    Languages Spoken:
    English

    Tiffany Kim is an Endocrinologist in Los Angeles, California. Dr. Kim is rated as an Advanced provider by MediFind in Gastric Bypass. Her top areas of expertise are Obesity, Osteoporosis, Menopause, Gastric Bypass, and Sleeve Gastrectomy.

    Advanced in Gastric Bypass
    Advanced in Gastric Bypass

    Pittsburg-Antioch Medical Group A Professional Corp.

    2220 Gladstone Dr Ste 3, 
    Pittsburg,, CA 
    Languages Spoken:
    English

    Krishna Moorthy is a Cardiologist in Pittsburg,, California. Dr. Moorthy is rated as an Advanced provider by MediFind in Gastric Bypass. His top areas of expertise are Orthostatic Hypotension, Low Blood Pressure, Cystic Medial Necrosis of Aorta, Gastric Bypass, and Pacemaker Implantation.

    Advanced in Gastric Bypass
    Endocrinology
    Advanced in Gastric Bypass
    Endocrinology

    Stanford Hospital And Clinics

    300 Pasteur Dr, 
    Stanford, CA 
    Languages Spoken:
    English
    Offers Telehealth

    Tracey Mclaughlin is an Endocrinologist in Stanford, California. Dr. Mclaughlin is rated as an Advanced provider by MediFind in Gastric Bypass. Her top areas of expertise are Low Blood Sugar, Type 2 Diabetes (T2D), Secondary Immunodeficiency (SID), Gastric Bypass, and Gastrostomy.

    Advanced in Gastric Bypass
    Endocrinology
    Advanced in Gastric Bypass
    Endocrinology

    Office

    1700 Owens St Rm 349, 
    San Francisco, CA 
    Languages Spoken:
    English

    Karin Wu is an Endocrinologist in San Francisco, California. Dr. Wu is rated as an Advanced provider by MediFind in Gastric Bypass. Her top areas of expertise are Obesity, Menopause, Postmenopausal Osteoporosis, Sleeve Gastrectomy, and Gastric Bypass.

    Rama R. Ganga
    Experienced in Gastric Bypass
    Bariatric Medicine
    Experienced in Gastric Bypass
    Bariatric Medicine

    7 Medical Plaza Care Center

    7 Medical Plaza Drive, Suite 400, 
    Roseville, CA 
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Rama Ganga is a Bariatric Medicine provider in Roseville, California. Dr. Ganga is rated as an Experienced provider by MediFind in Gastric Bypass. His top areas of expertise are Hernia, Obesity, Gastroparesis, Sleeve Gastrectomy, and Gastrectomy. Dr. Ganga is currently accepting new patients.

    Azam A. Qureshi
    Experienced in Gastric Bypass
    Experienced in Gastric Bypass

    CPMC Department Of Ophthalmology

    711 Van Ness Avenue, Suite 250, 
    San Francisco, CA 
    Languages Spoken:
    English
    Accepting New Patients

    Azam Qureshi is a Pediatrics provider in San Francisco, California. Dr. Qureshi is rated as an Experienced provider by MediFind in Gastric Bypass. His top areas of expertise are Strabismus, Amblyopia, Esotropia, Sleeve Gastrectomy, and Gastric Bypass. Dr. Qureshi is currently accepting new patients.

    Viraj P. Raygor
    Experienced in Gastric Bypass
    Experienced in Gastric Bypass

    Palo Alto Center

    87 Encina Avenue, Encina Building, Level 1, 
    Palo Alto, CA 
    Experience:
    10+ years
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Viraj Raygor is a Cardiologist in Palo Alto, California. Dr. Raygor has been practicing medicine for over 10 years and is rated as an Experienced provider by MediFind in Gastric Bypass. His top areas of expertise are Short QT Syndrome, Brugada Syndrome, Postural Orthostatic Tachycardia Syndrome (POTS), Sleeve Gastrectomy, and Gastric Bypass. Dr. Raygor is currently accepting new patients.

    Showing 1-20 of 196

    Last Updated: 02/22/2026

    What is the definition of Gastric Bypass?

    Gastric bypass is surgery that helps you lose weight by changing how your stomach and small intestine handle the food you eat.

    After the surgery, your stomach will be smaller. You will feel full with less food.

    Also, the food you eat will no longer go into some parts of your small intestine that absorb the nutrients in food. Because of this, your body will not get all of the calories from the food you eat.

    When should I see a Gastric Bypass doctor in California, US?

    There are various reasons why you may want to see a specialist, such as: 

    • Your primary care provider recommends it. 
    • Your condition requires expert knowledge and specialized care. 
    • Your symptoms persist or worsen despite treatment. 
    • You need specialized testing or procedures. 
    • You want a second opinion.  

    What should I consider when choosing a Gastric Bypass doctor in California, US?

    It’s important to see a provider with expertise in your specific condition. Each provider profile in MediFind’s doctor database includes information on which conditions they treat, years of experience, research contributions, languages spoken, insurance plans accepted, and more.  

    How does MediFind rank Gastric Bypass doctors in California, US?

    MediFind’s rankings are based on a variety of data sources, such as the number of articles a doctor has published in medical journals, participation in clinical trials and industry conferences, as well as the number of patients that provider sees for a given condition. Note that MediFind’s provider database is not based on user reviews, and providers do not pay to be included in the database. 

    What types of insurance are accepted by Gastric Bypass doctors in California, US?

    Most profiles in MediFind’s doctor database include a list of insurance plans accepted by that provider. However, it’s a good idea to contact the provider’s office to make sure they still accept your insurance, then doublecheck by contacting your insurance plan to confirm they’re in network. 

    How can I book an appointment online with a Gastric Bypass doctor in California, US?

    MediFind offers direct scheduling for certain providers using the “Request Appointment” button on that provider’s profile. If the schedule option is not available for a provider, tap the red “Show Phone Number” button on their profile to get their contact information. If you prefer to find providers who offer online scheduling, select “Schedules online” under the “Availability” category of the filter feature on the left side of the Gastric Bypass doctor search results page. 

    Why is it important to get a second opinion from a different Gastric Bypass doctor?

    Second opinions are an opportunity to confirm a diagnosis and its root cause, learn about alternative treatment options, or simply gain peace of mind. Many people, especially those with serious diagnoses, get second opinions so they can understand all their options and make informed decisions, so don’t hesitate to get one if you have any doubts or need more information or clarification regarding your care. Note that some insurance plans require second opinions, while others don’t cover second opinions, so be sure to confirm with your insurance provider first.   

    How can I prepare for my appointment with a Gastric Bypass doctor in California, US?

    Prepare for your appointment by gathering the following items: 

    • Copies of medical records (dating back at least one year) 
    • Your medical history, including illnesses, medical conditions, surgeries, and other doctors you see 
    • Family history of disease 
    • List of current prescription drugs, over-the-counter medicines, vitamins, and herbal remedies or supplements including names and doses 
    • Allergies to medications, food, latex, insects, etc.  
    • List of questions and concerns 
    • Your insurance card 

    You might also contact the provider’s office to see if they offer transportation or childcare services or if you’re allowed to bring a loved one for support or to take notes during your visit. 

    What questions should I ask my Gastric Bypass doctor?

    Here are some sample questions: 

    • Can you explain in simple terms what this condition is and how it’s treated? 
    • What symptoms or side effects should I watch for? 
    • What tests will be involved, and when can I expect results? 
    • Are there other specialists I need to see? 
    • What’s the best way to reach you if I have follow-up questions? 

    How can I learn about the latest clinical trials and research advances my Gastric Bypass doctor may know about?

    MediFind’s Clinical Trials tool asks you a series of questions to help you narrow down your search by health condition, age, gender, location, how far you’re willing to travel, and more. Each question you answer filters down the number of trials until you find the ones that are most relevant to you. 

    MediFind’s Latest Advances tool features summaries of recent articles published in medical journals. We use cutting-edge technology to scour medical publication databases for the latest research advancements on any given condition, then we simplify this information in a way that’s useful and easy to understand. 

    Can I filter my search to show male or female Gastric Bypass doctors in California, US?

    Look for the filter feature on the left side of the Gastric Bypass doctor search results page. Select “Female” or “Male” under the “Gender” category to search for female or male providers exclusively. If the “Any” option is selected, it will pull results for both male and female providers. 

    Can I filter my search to find a Gastric Bypass doctor that offers video calls?

    Look for the filter feature on the left-side of the Gastric Bypass doctor search results page. Select “Offers telehealth visits” under the Availability category to search for providers who offer virtual appointments (video calls). 

    Reviewed on: 11/11/24  

    By: MediFind Medical Staff 

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