The 20 Best Diarrhea Doctors Near Me in California, US

Find the Top Diarrhea Experts and Specialists

The 20 Best Diarrhea Doctors in California, US

Last Updated: 02/22/2026

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MediFind found 5548 doctor with experience in Diarrhea near California, US. Of these, 5057 are Experienced, 449 are Advanced, 32 are Distinguished and 4 are Elite.

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5,548 providers found
    Stephen Luby
    Elite in Diarrhea
    Internal Medicine
    Elite in Diarrhea
    Internal Medicine

    Office

    473 Via Ortega # Y2, 
    Stanford, CA 
    Languages Spoken:
    English

    Stephen Luby is a primary care provider, practicing in Internal Medicine in Stanford, California. Dr. Luby is rated as an Elite provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Diarrhea, Parainfluenza, Typhoid Fever, and Salmonella Enterocolitis.

    Elite in Diarrhea
    Gastroenterology
    Elite in Diarrhea
    Gastroenterology

    Cedars-Sinai Gastrointestinal (Gi) Motility

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

    Mark Pimentel is a Gastroenterologist in West Hollywood, California. Dr. Pimentel is rated as an Elite provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Irritable Bowel Syndrome (IBS), Small Bowel Bacterial Overgrowth, Diarrhea, Endoscopy, and Appendectomy.

    Elite in Diarrhea
    Gastroenterology
    Elite in Diarrhea
    Gastroenterology

    Office

    100 Medical Plz Ste 303, 
    Los Angeles, CA 
    Languages Spoken:
    English
    Offers Telehealth

    Lin Chang is a Gastroenterologist in Los Angeles, California. Dr. Chang is rated as an Elite provider by MediFind in the treatment of Diarrhea. Her top areas of expertise are Irritable Bowel Syndrome (IBS), Diarrhea, Chronic Idiopathic Constipation (CIC), Indigestion, and Endoscopy.

    Learn about our expert tiers
    Elite in Diarrhea
    Gastroenterology
    Elite in Diarrhea
    Gastroenterology

    Cedars-Sinai Gastrointestinal (Gi) Motility

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

    Ali Rezaie is a Gastroenterologist in West Hollywood, California. Dr. Rezaie is rated as an Elite provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Small Bowel Bacterial Overgrowth, Irritable Bowel Syndrome (IBS), Diarrhea, Endoscopy, and Appendectomy.

    Sivakumar R. Munnangi
    Distinguished in Diarrhea
    Gastroenterology
    Distinguished in Diarrhea
    Gastroenterology

    Sivakumar R. Munnangi, MD Private Practice

    386 W Olive Ave, Ste A, 
    Merced, CA 
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Gastroenterologist & Hepatologist who operates own private practice and endoscopy center in Merced, CA. Dr. Munnangi is rated as a Distinguished provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Chronic Erosive Gastritis, Hemorrhoids, Diverticular Disease, Gastrectomy, and Colonoscopy.

    Atul B. Vachhani
    Distinguished in Diarrhea
    Gastroenterology
    Distinguished in Diarrhea
    Gastroenterology

    Santa Maria Gastroenterology Medical Group

    361 Town Center West, Ste 101, 
    Santa Maria, CA 
    Languages Spoken:
    English
    Accepting New Patients

    We understand that visiting the gastroenterologist may be a new experience for you and that you may be in pain or worried about your health. That?s why all the staff at the Santa Maria Digestive Diagnostic Center and Santa Maria Gastroenterology focus on making you feel comfortable and confident in our care. Our physicians and our medical team take extra care to listen to your concerns, answer all your questions and thoroughly explain your condition and treatment options. Dr. Vachhani is rated as a Distinguished provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Familial Adenomatous Polyposis, Gardner Syndrome, Turcot Syndrome, Gastrectomy, and Colonoscopy.

    Roger M. Kao
    Distinguished in Diarrhea
    Gastroenterology
    Distinguished in Diarrhea
    Gastroenterology

    Digestive Care Medical Center

    1000 Laurel St, 
    San Carlos, CA 
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    In his free time, Dr. Kao enjoys playing the piano, listening to live music, enjoying the outdoors and traveling to Italy. He and his wife, who were married in her hometown of Padova, Italy, also love to bike, run and enjoy the outdoors. Dr. Roger Kao is fluent in Mandarin Chinese and conversational medical Spanish and Italian. Dr. Kao is rated as a Distinguished provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Gastric Dysmotility, Irritable Bowel Syndrome (IBS), Diarrhea, Gastrectomy, and Endoscopy.

    Paul D. Wetzel
    Distinguished in Diarrhea
    Gastroenterology
    Distinguished in Diarrhea
    Gastroenterology

    San Luis Gastroenterology

    1551 Bishop St., Ste 430, 
    San Luis Obispo, CA 
    Languages Spoken:
    English
    Accepting New Patients

    Paul Wetzel is a Gastroenterologist in San Luis Obispo, California. Dr. Wetzel is rated as a Distinguished provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Gastroesophageal Reflux Disease (GERD), Familial Adenomatous Polyposis, Diverticular Disease, Endoscopy, and Gastrectomy. Dr. Wetzel is currently accepting new patients.

    Distinguished in Diarrhea
    Gastroenterology
    Distinguished in Diarrhea
    Gastroenterology
    23600 Telo Avenue, Suite 260, 
    Torrance, CA 
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Oren Zaidel is a Gastroenterologist in Torrance, California. Dr. Zaidel is rated as a Distinguished provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Gas Bloat Syndrome, Gastroesophageal Reflux Disease (GERD), Irritable Bowel Syndrome (IBS), Endoscopy, and Colonoscopy. Dr. Zaidel is currently accepting new patients.

    Thomas P. Hsia
    Advanced in Diarrhea
    Gastroenterology
    Advanced in Diarrhea
    Gastroenterology

    Santa Maria Gastroenterology Medical Group

    230 Station Way, Ste. B, 
    Arroyo Grande, CA 
    Languages Spoken:
    English
    Accepting New Patients

    We understand that visiting the gastroenterologist may be a new experience for you and that you may be in pain or worried about your health. That?s why all the staff at the Santa Maria Digestive Diagnostic Center and Santa Maria Gastroenterology focus on making you feel comfortable and confident in our care. Our physicians and our medical team take extra care to listen to your concerns, answer all your questions and thoroughly explain your condition and treatment options. Dr. Hsia is rated as an Advanced provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Enlarged Liver, Familial Adenomatous Polyposis, Gardner Syndrome, Gastrectomy, and Endoscopy.

    Armine Sarkisian
    Advanced in Diarrhea
    Gastroenterology
    Advanced in Diarrhea
    Gastroenterology

    Armine Sarkisian, MD Private Practice

    912 W Glenoaks Blvd, 
    Glendale, CA 
    Languages Spoken:
    English, Armenian, Russian
    Accepting New Patients

    Our goal is to provide medical care in a caring and respectful way. Dr. Sarkisian is rated as an Advanced provider by MediFind in the treatment of Diarrhea. Her top areas of expertise are Gas Bloat Syndrome, Gastric Dysmotility, Chronic Erosive Gastritis, Gastrectomy, and Gastrostomy.

    Paramjit S. Benipal
    Advanced in Diarrhea
    Gastroenterology
    Advanced in Diarrhea
    Gastroenterology

    Santa Maria Gastroenterology Medical Group

    361 Town Center West, Ste 101, 
    Santa Maria, CA 
    Languages Spoken:
    English, Hindi, Punjabi
    Accepting New Patients
    Offers Telehealth

    We understand that visiting the gastroenterologist may be a new experience for you and that you may be in pain or worried about your health. That?s why all the staff at the Santa Maria Digestive Diagnostic Center and Santa Maria Gastroenterology focus on making you feel comfortable and confident in our care. Our physicians and our medical team take extra care to listen to your concerns, answer all your questions and thoroughly explain your condition and treatment options. Dr. Benipal is rated as an Advanced provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Familial Adenomatous Polyposis, Colonic Malakoplakia, Gardner Syndrome, Gastrectomy, and Endoscopy.

    Edward K. Onuma
    Advanced in Diarrhea
    Gastroenterology
    Advanced in Diarrhea
    Gastroenterology

    Peninsula Gastrointestinal Specialists

    100 S Ellsworth Ave, Ste 507, 
    San Mateo, CA 
    Languages Spoken:
    English
    Accepting New Patients

    Edward Onuma is a Gastroenterologist in San Mateo, California. Dr. Onuma is rated as an Advanced provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Hemorrhoids, Heartburn, Portal Hypertension, Gastrectomy, and Colonoscopy. Dr. Onuma is currently accepting new patients.

    Jonathan L. Riegler
    Advanced in Diarrhea
    Gastroenterology
    Advanced in Diarrhea
    Gastroenterology

    Pacific Central Coast Health Centers

    1255 Las Tablas Rd, Suite 201, 
    Templeton, CA 
    Languages Spoken:
    English
    Accepting New Patients

    Dr. Jonathan Riegler is a Board Certified Gastroenterologist. Medical Education: University of Michigan Medical SchoolInternship and Residency: Duke UniversityFellowship: University of California, San FranciscoDr. Riegler's Care Philosophy: “I strive to recognize and understand the complex issues involved in the physician- patient relationship and try to treat patients in the way I'd want me or my family members treated.” When he's not working Dr. Riegler enjoys Cycling and traveling. Dr. Riegler is rated as an Advanced provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Familial Adenomatous Polyposis, Gastroesophageal Reflux Disease (GERD), Gardner Syndrome, Colonoscopy, and Gastrectomy.

    Kevin B. Hill
    Advanced in Diarrhea
    Gastroenterology
    Advanced in Diarrhea
    Gastroenterology

    Gastroenterology - Dignity Health Medical Group - Grass Valley, CA

    300 Sierra College Drive, Ste 105 & 220, 
    Grass Valley, CA 
    Languages Spoken:
    English
    Accepting New Patients

    Dr. Hill grew up in southern California near Anaheim. He graduated from the New York College of Osteopathic Medicine in 1996. He completed his Internal Medicine residency in 1999 at Loma Linda University but stayed on an additional year as the chief medical resident. Dr Hill then completed his Gastroenterology fellowship at Loma Linda in 2003. After fellowship he took a position at Sutter Medical Group in Auburn California where he practiced for over 5 years. He will be starting in Grass Valley in January 2009. Dr Hill is board certified in both Internal Medicine and Gastroenterology. His areas of interest include therapeutic endoscopy and hepatology, though he enjoys all aspects of Gastroenterology. Dr Hill enjoys athletics and reading. He is married and has 2 children.To contribute to the wellness of our community through the provision of quality services delivered in a compassionate and cost-effective manner.We will be a community-oriented endoscopy center. We will directly provide endoscopy services in the ambulatory setting. In addition, we will collaborate with other providers to manage and improve the total health of our community with compassion, dedication and accountability for quality and efficiency. Dr. Hill is rated as an Advanced provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Gardner Syndrome, Turcot Syndrome, Gastritis, Gastrectomy, and Gastrostomy.

    Jeffry A. Brown
    Advanced in Diarrhea
    Gastroenterology
    Advanced in Diarrhea
    Gastroenterology

    Gastroenterology - Dignity Health - Templeton, CA

    350 Posada Lane, Suite 202, 
    Templeton, CA 
    Languages Spoken:
    English
    Accepting New Patients

    Bringing extensive expertise to the Central Coast, Dr. Jeffry Brown is a dedicated gastroenterologist with Dignity Health Pacific Central Coast Health Centers. His robust academic background includes a B.A. in Medical Physics and an M.A. in Biophysics from UC Berkeley. He went on to earn his M.D. from U.C. Davis School of Medicine, then completed his Internal Medicine residency at St. Mary Medical Center in Long Beach, followed by a Gastroenterology fellowship at Harbor-UCLA Medical Center. Dr. Brown previously led Endoscopy Services as Medical Director at Kaweah Delta Medical Center since 2005 and holds a fellowship in Endoscopic Ultrasound. While proficient in general gastroenterology, he has a special interest in the diagnosis and treatment of pancreatic and biliary diseases. In his leisure time, Dr. Brown enjoys biking and golfing. Dr. Brown is rated as an Advanced provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Painful Swallowing, Swallowing Difficulty, Gastroesophageal Reflux Disease (GERD), Endoscopy, and Gastrectomy.

    Jeffrey B. Mundorf
    Advanced in Diarrhea
    Gastroenterology
    Advanced in Diarrhea
    Gastroenterology

    Gastroenterology - Dignity Health - San Luis Obispo, CA

    1551 Bishop Street, Suite 230, 
    San Luis Obispo, CA 
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Board Certification: Certified by American Board of Internal Medicine, GastroenterologyFellowship Training: Duke University Medical CenterInternship and Residency: University of California, San Diego Medical CenterMedical School: University of Texas Southwestern Medical SchoolProfessional Memberships: Member, American Gastroenterological AssociationMember and Fellow, American College of Gastroenterology. Dr. Mundorf is rated as an Advanced provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Gastroesophageal Reflux Disease (GERD), Lower Esophageal Ring, Benign Esophageal Stricture, Endoscopy, and Colonoscopy.

    Ronald K. Hsu
    Advanced in Diarrhea
    Gastroenterology
    Advanced in Diarrhea
    Gastroenterology

    Capitol GI Consultants

    4 Medical Plaza Dr, Ste 205, 
    Roseville, CA 
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Dr. Hsu received his medical degree from the University of Wales, College of Medicine, the United Kingdom, in 1985. He completed his Residency in Internal Medicine at the California Pacific Medical Center in San Francisco, California. Dr. Hsu received his G.I. Fellowship and Advanced Therapeutic Endoscopy Training at the University of California, Davis Medical Center (UCDMC). He is Board Certified in both Internal Medicine and Gastroenterology. Dr. Hsu has been in practice since 1989 and has been with Capitol G.I. since 2000. He served as Director of Endoscopy, G.I. Fellowship Training Program at UCDMC, and appointed Clinical Professor of Medicine since 2007. He is the current Governor of Northern California, American College of Gastroenterology and Co-Chair, CMAC of Northern California, Crohn's and Colitis Foundation. He has special interests in Barrett's Endoscopic Therapies, Endoscopic Retrograde Cholangiopancreatography, Colon Cancer Prevention, Inflammatory Bowel Disease, Intestinal Microbiome, and Fecal Microbiota Transplantation. Dr. Hsu sees patients in our Roseville office. Dr. Hsu is rated as an Advanced provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Gastric Dysmotility, Gastroesophageal Reflux Disease (GERD), Gas Bloat Syndrome, Gastrectomy, and Endoscopy.

    Aslam Godil
    Advanced in Diarrhea
    Gastroenterology
    Advanced in Diarrhea
    Gastroenterology

    Gastroenterology - Dignity Health Medical Group - Grass Valley, CA

    300 Sierra College Drive, Ste 105 & 220, 
    Grass Valley, CA 
    Languages Spoken:
    English
    Accepting New Patients

    Care philosophy: I believe in compassionate and personalized care for my patients. I would like to provide same level of care to my patients as if they were my family members. My goal is to contribute to the wellness of our community through the provision of quality services delivered in a compassionate and cost-effective manner. A holistic approach to healthcare, acknowledging each individual's physical spiritual, and psychosocial needs.Why I became a medical provider: My father was a family physician who practiced rural medicine in West Africa. Fascinated and inspired by his unconditional commitment in caring for the needy led me to sincerely follow his foot steps and pursue a career in Gastroenterology. Dr. Godil is rated as an Advanced provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Radiation Enteritis, Gastritis, Chronic Erosive Gastritis, Colonoscopy, and Endoscopy.

    Gaspar M. Nazareno
    Advanced in Diarrhea
    Gastroenterology
    Advanced in Diarrhea
    Gastroenterology
    1409 E. Briggsmore Ave., 
    Modesto, CA 
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Gaspar Nazareno is a Gastroenterologist in Modesto, California. Dr. Nazareno is rated as an Advanced provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Hepatitis, Enlarged Liver, Familial Adenomatous Polyposis, Gastrectomy, and Colonoscopy. Dr. Nazareno is currently accepting new patients.

    Showing 1-20 of 5,548

    Last Updated: 02/22/2026

    What is the definition of Diarrhea?

    Diarrhea is when you pass loose or watery stool.

    When should I see a Diarrhea 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 Diarrhea 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 Diarrhea 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 Diarrhea 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 Diarrhea 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 Diarrhea doctor search results page. 

    Why is it important to get a second opinion from a different Diarrhea 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 Diarrhea 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 Diarrhea 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 Diarrhea 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 Diarrhea doctors in California, US?

    Look for the filter feature on the left side of the Diarrhea 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 Diarrhea doctor that offers video calls?

    Look for the filter feature on the left-side of the Diarrhea 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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