Dr. Matthew Eric Viernes, MD

Dr. Viernes practices at North County Gastroenterology in Oceanside, California.

Dr. Viernes' NPI, 1730158650, was assigned on March 14, 2006. Dr. Viernes graduated from University of Wisconsin-Madison in 1995. Dr. Viernes holds California license A61516.

Dr. Viernes' primary practice is North County Gastroenterology, at 3923 Waring Road Ste A, Oceanside, CA 92056. The practice phone is (619) 724-8782.

Dr. Viernes' primary practice is North County Gastroenterology in Oceanside, California. Dr. Viernes is also affiliated with Sharp Tri-City Medical Center. The medical group on file is North County Gastroenterology. Dmand AI also links Dr. Viernes to 1 more hospital and 1 group practice or clinic, each named with a free account. Dr. Viernes' employer is on file too: a clinical lab.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Viernes practices, 4 sites in all. Vendor and product names are available with a free account.

Gastroenterology is Dr. Viernes' primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Viernes is board certified in gastroenterology by the American Board of Internal Medicine. Dr. Viernes is licensed in California.

Dmand AI lists acid reflux, acute gastroduodenitis, chronic indigestion, chronic inflammatory bowel disease (IBD), cirrhosis of the liver, colonoscopy, fatty liver and gastroenteritis among the conditions Dr. Viernes treats.

CMS data shows 779 Medicare services from Dr. Viernes across 13 procedure codes in 2024, for 394 Medicare patients. Medicare paid $86,326 for them.

CMS counts 394 Medicare patients who saw Dr. Viernes in 2024. The largest group is 65 to 74, with 189 patients. 73% of them have high cholesterol, and 68% have high blood pressure. 16% are also on Medicaid. Their average risk score is 1.24, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Viernes' median patient age at 64, with 45% women.

In 2024, Dr. Viernes wrote 702 Medicare Part D claims for 396 patients. 76% of them were for generic drugs. CMS names the drug for 566 of them, across 12 drugs with 11 or more claims each, at $581,616 in total drug cost. In 2023, CMS named 485 claims across 12 drugs.

Dr. Viernes accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Viernes as offering telehealth. CMS counts 97 procedures of upper gastrointestinal (gi) endoscopy for acid reflux by Dr. Viernes, more than 76% of the clinicians it reports for that procedure.

Dmand AI links 3 papers to Dr. Viernes. The most frequent topics are Influenza, Human and Liver Cirrhosis. Dr. Viernes' most frequent co-authors are Andrea Duchini, MD, Paul J. Pockros, MD and Lisa M. Nyberg, MD.

Dmand AI links Dr. Viernes to 2 clinical trials, 2 of them phase 2 studies. Conditions studied include Non-alcoholic Fatty Liver Disease and Fatty Liver.

CMS Open Payments shows 981 general payments to Dr. Viernes from 43 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 99% of the total. Abbvie Inc. paid the most, $4,989.

Dmand AI lists 1 award for Dr. Viernes, most recently CMS Stage 1 2012 in 2012.

Dr. Viernes graduated from University of Wisconsin-Madison in 1995.

Dr. Viernes is in network with 10 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Humana. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.