Dr. Michael Shim, MD

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

Dr. Shim's NPI, 1851503353, was assigned on May 4, 2007. Dr. Shim graduated from New York University School of Medicine in 2001. Dr. Shim holds California license A88942.

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

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

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

Gastroenterology is Dr. Shim's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Shim is board certified in gastroenterology by the American Board of Internal Medicine. Dmand AI has Dr. Shim's licenses on file in 2 states: California and New York.

Dmand AI lists acid reflux, chronic indigestion, chronic inflammatory bowel disease (IBD), cirrhosis of the liver, colonoscopy, fatty liver, gastrointestinal bleeding and irritable bowel syndrome (IBS) among the conditions Dr. Shim treats.

CMS data shows 630 Medicare services from Dr. Shim across 13 procedure codes in 2024, for 342 Medicare patients. Medicare paid $68,308 for them.

CMS counts 342 Medicare patients who saw Dr. Shim in 2024. The largest group is 65 to 74, with 181 patients. 69% of them have high cholesterol, and 66% have high blood pressure. 28% are also on Medicaid. Their average risk score is 1.40, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Shim's median patient age at 63, with 49% women.

In 2024, Dr. Shim wrote 934 Medicare Part D claims for 517 patients. 85% of them were for generic drugs. CMS names the drug for 754 of them, across 11 drugs with 11 or more claims each, at $156,606 in total drug cost. In 2023, CMS named 769 claims across 19 drugs.

Dr. Shim accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Shim as offering telehealth. CMS counts 130 procedures of upper gastrointestinal (gi) endoscopy for acid reflux by Dr. Shim, more than 82% of the clinicians it reports for that procedure.

Dmand AI links 2 papers to Dr. Shim. Dr. Shim's most frequent co-author is Francisco Antonio Durazo, MD.

Dmand AI links Dr. Shim to 1 clinical trial. Conditions studied include Non-alcoholic Fatty Liver Disease and Fatty Liver.

CMS Open Payments shows 871 general payments to Dr. Shim from 44 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $5,017.

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

Dr. Shim graduated from New York University School of Medicine in 2001. Dr. Shim is a member of ACG, AGA and ASGE.

Dr. Shim is in network with 15 carriers, including Aetna, United Healthcare and Elevance. PPO plans come from the most carriers, 10. Check the plan with the practice before a visit.