Overview
Dr. William E. Karnes is a board-certified UCI Health gastroenterologist who specializes in disorders of the gastrointestinal tract, including colorectal cancer screening, gastrointestinal reflux disease (GERD), swallowing disorders, irritable bowel syndrome, peptic ulcers and esophageal disorders.He performs colonoscopies, upper endoscopies and capsule endoscopies, and treats gastrointestinal bleeding, chronic diarrhea, constipation, bloating and bacterial problems in the small intestines.Karnes earned his medical degree from the University of Minnesota Medical School in Minneapolis, where he completed a residency in internal medicine. He went on to complete a fellowship in molecular biology at Mayo Clinic in Rochester, Minn., and a fellowship in gastroenterology at the University of California, Los Angeles.His research interests include colon cancer screening, risk assessment for colon cancer and artificial intelligence-assisted colonoscopy. He also conducts translational research on colon cancer prevention, with an emphasis on regular colorectal screening, especially among patients and families with a genetic risk for developing the disease.
Dr. Karnes is highly rated in 13 conditions, according to our data. His clinical expertise encompasses Trichohepatoenteric Syndrome, Nonalcoholic Steatohepatitis (NASH), Familial Adenomatous Polyposis, Endoscopy, and Gastrectomy.
Dr. Karnes is board certified in American Board Of Internal Medicine - Gastroenterology and American Board Of Internal Medicine - Internal Medicine.
Graduate Institution
Residency
Specialties
Licenses
Board Certifications
Fellowships
Hospital Affiliations
Languages Spoken
Gender
Awards
Insurance
Accepted insurance can change. Please verify directly with the provider.
Accepted insurance plans:
- EPO
- HMO
- POS
- PPO
- MEDICARE MAPD
- MEDICARE SNP
- OTHER MEDICARE
- OTHER MEDICARE PART D
- EPO
- HMO
- POS
- PPO
- EPO
- HMO
- POS
- PPO
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE-MEDICAID PLAN
- OTHER COMMERCIAL
- OTHER MEDICARE
- OTHER MEDICARE PART D
- PPO
- EPO
- INSURANCE PLAN
- MEDICARE MAPD
- MEDICARE PDP
- OTHER COMMERCIAL
- OTHER MEDICARE
- PPO
- HMO
- POS
- PPO
- OTHER MEDICARE
- OTHER MEDICARE PART D
- EPO
- HMO
- PPO
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE SNP
- OTHER COMMERCIAL
- OTHER MEDICARE
- OTHER MEDICARE PART D
- PPO
Accepted plan types not found. Please verify directly with the provider.
- EPO
- POS
- HMO
- INDEMNITY
- POS
- PPO
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- OTHER MEDICARE
- POS
- PPO
- OTHER MANAGED MEDICAID
- OTHER MEDICAID
- STATE MEDICAID
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE SNP
- MEDICARE-MEDICAID PLAN
- OTHER MEDICARE PART D
- INSURANCE PLAN
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE PDP
- EPO
- HMO
- PPO
- INSURANCE PLAN
- MEDICARE MAPD
- OTHER COMMERCIAL
- PPO
- INSURANCE PLAN
- MEDICARE MAPD
- EPO
- HMO
- POS
- PPO
- MEDICARE DISCOUNT CARD
- MEDICARE PDP
- OTHER MEDICARE
- EPO
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE SNP
- MEDICARE-MEDICAID PLAN
- OTHER MEDICARE
- OTHER MEDICARE PART D
Locations
101 The City Drive South, Building 22C, Orange, CA 92868
1 Medical Plaza Drive, Irvine, CA 92697
1640 Newport Boulevard, Suite 100, Mesa, CA 92627
Additional Areas of Focus
Dr. Karnes has provided the following conditions as areas of focus. Please note that we may not have enough data to validate their experience in some of these conditions.
UCI Health Chao Family Comprehensive Digestive Disease Center
Dr. Jason Samarasena is a UCI Health physician who specializes in treating gastrointestinal disorders, including gastroesophageal reflux disease, esophageal disease, pancreatic cysts, biliary tract disorders, gastric intestinal metaplasia and colorectal cancer.His research interests include advanced endoscopic imaging, characterization and treatment of pancreatic cysts, confocal laser endomicroscopy, bowel preparation before colonoscopy, endoscopic mucosal resection and endoscopic submucosal dissection.Samarasena received his medical degree from Memorial University of Newfoundland, Canada, where he graduated on the Dean’s List. He completed both general gastroenterology and interventional endoscopy fellowships at UC Irvine.Press Ganey has named Samarasena as one of the top five physicians for patient satisfaction in the ambulatory surgery group at UCI Health. He was named the 2016 Teaching Attending of the Year by the UC Irvine Gastroenterology Fellowship. He is the current president of the Orange County GI Society.Nickname: Dr. Sam. Dr. Samarasena is highly rated in 50 conditions, according to our data. His clinical expertise encompasses Barrett Esophagus, Jaundice, Gastroesophageal Reflux Disease (GERD), Endoscopy, and Colonoscopy. Dr. Samarasena is board certified in American Board Of Internal Medicine - Gastroenterology.
Los Angeles-Gi Liver Clinic
Norah Terrault is a Gastroenterologist practicing medicine in Los Angeles, California. Dr. Terrault is highly rated in 21 conditions, according to our data. Her clinical expertise encompasses Hepatitis, Hepatitis C, Hepatitis B, Liver Transplant, and Hepato-Pancreato-Biliary Surgery.
USC University Hospital
James Buxbaum is a Gastroenterologist practicing medicine in Los Angeles, California. Dr. Buxbaum is highly rated in 43 conditions, according to our data. His clinical expertise encompasses Acute Pancreatitis, Hereditary Pancreatitis, Choledocholithiasis, Endoscopy, and Lithotripsy.
Frequently Asked Questions about Dr. William E. Karnes
How do I make an appointment with Dr. William E. Karnes?
You can book an appointment with Dr. William E. Karnes by calling their office at 888-717-4463. MediFind provides direct contact information so you can schedule visits, second opinions, or consultations without navigating third-party calendars.
Is Dr. William E. Karnes a top-rated expert for Trichohepatoenteric Syndrome?
MediFind is an objective health platform that identifies experts based on real-world data. Dr. William E. Karnes is classified as an Distinguished expert for Trichohepatoenteric Syndrome, meaning they are among the top experts in the country for this condition. This ranking is based on their volume of patients, published research, and peer connections.
What conditions does Dr. William E. Karnes specialize in?
While Dr. William E. Karnes is a Gastroenterology, they have specific expertise in Trichohepatoenteric Syndrome, Nonalcoholic Steatohepatitis (NASH), and Familial Adenomatous Polyposis. MediFind analyzes a doctor's articles and referral patterns to identify their specific areas of focus within Gastroenterology.
Does Dr. William E. Karnes accept my insurance?
Dr. William E. Karnes accepts most major insurance plans, including Aetna and Alignment Health Plan. We recommend calling the office directly at 888-717-4463 to verify that your specific plan is currently accepted before your visit.
Areas of Expertise
MediFind evaluates expertise by pulling from factors such as number of articles a doctor has published in medical journals, participation in clinical trials, speaking at industry conferences, prescribing and referral patterns, and strength of connections with other experts in their field.
Learn more about MediFind’s expert tiers
- Distinguished
- Trichohepatoenteric SyndromeDr. Karnes isDistinguished. Learn about Trichohepatoenteric Syndrome.
- Advanced
- Childhood VolvulusDr. Karnes isAdvanced. Learn about Childhood Volvulus.
- DiarrheaDr. Karnes isAdvanced. Learn about Diarrhea.
- Familial Adenomatous PolyposisDr. Karnes isAdvanced. Learn about Familial Adenomatous Polyposis.
- Gardner SyndromeDr. Karnes isAdvanced. Learn about Gardner Syndrome.
- Gas Bloat SyndromeDr. Karnes isAdvanced. Learn about Gas Bloat Syndrome.
- Gastroesophageal Reflux Disease (GERD)
- Experienced
- AchalasiaDr. Karnes isExperienced. Learn about Achalasia.
- AnemiaDr. Karnes isExperienced. Learn about Anemia.
- Arteriovenous MalformationDr. Karnes isExperienced. Learn about Arteriovenous Malformation.
- Bacterial GastroenteritisDr. Karnes isExperienced. Learn about Bacterial Gastroenteritis.
- Banti's SyndromeDr. Karnes isExperienced. Learn about Banti's Syndrome.
- Barrett EsophagusDr. Karnes isExperienced. Learn about Barrett Esophagus.