Dr. Ma Somsouk, MD

Dr. Somsouk practices at Zuckerberg San Francisco General Hospital and Trauma Center in San Francisco, California, part of City and County of San Francisco, CA.

Dr. Somsouk's NPI, 1437296431, was assigned on January 31, 2007. Dr. Somsouk graduated from Harvard Medical School in 2002. Dr. Somsouk holds California license A84310.

Dr. Somsouk's primary practice is Zuckerberg San Francisco General Hospital and Trauma Center, at 1001 Potrero Avenue, San Francisco, CA 94110 in San Francisco County. The practice phone is (415) 206-8000.

Dr. Somsouk's primary practice is Zuckerberg San Francisco General Hospital and Trauma Center in San Francisco, California, part of City and County of San Francisco, CA. The medical group on file is UCSF Pediatrics. Dmand AI also links Dr. Somsouk to 3 more medical groups, each named with a free account.

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

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

Dmand AI lists colonoscopy and upper GI endoscopy among the conditions Dr. Somsouk treats.

CMS data shows 248 Medicare services from Dr. Somsouk across 8 procedure codes in 2024, for 130 Medicare patients. Medicare paid $20,578 for them. Every service was in a facility, such as a hospital, rather than an office.

CMS counts 130 Medicare patients who saw Dr. Somsouk in 2024. The largest group is 65 to 74, with 76 patients. 69% of them have high blood pressure, and 63% have high cholesterol. 91% are also on Medicaid. Their average risk score is 1.86, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Somsouk's median patient age at 70, with 42% women.

In 2024, Dr. Somsouk wrote 42 Medicare Part D claims for 18 patients. 74% of them were for generic drugs. CMS names the drug for 15 of them, across 1 drug with 11 or more claims each, at $75 in total drug cost. In 2023, CMS named 17 claims across 1 drug.

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 97 out of 100 for Dr. Somsouk for performance year 2024, reported as part of a group. Dr. Somsouk accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 71 procedures of colonoscopy by Dr. Somsouk, more than 71% of the clinicians it reports for that procedure.

Dmand AI links 138 papers to Dr. Somsouk, published from 2007 to 2025. 2018 was the busiest year, with 13. The most frequent topics are HIV Infections, Colorectal Neoplasms and Early Detection of Cancer. Dr. Somsouk has published most often in Clin Gastroenterol Hepatol. Dr. Somsouk's most frequent co-authors are Steven Grant Deeks, MD, Peter William Hunt, MD and Lukejohn Welch Day, MD.

Dmand AI links Dr. Somsouk to 2 clinical trials. Conditions studied include Colonic Neoplasms, Dysbiosis and Colorectal Neoplasms. University of California, San Francisco sponsors the most, 2.

CMS Open Payments shows 1 general payment to Dr. Somsouk from 1 drug or device company in 2016. Food and beverage make up the largest share, 100% of the total. Genentech, Inc. paid the most, $29. It also lists 4 research payments totaling $12,400 from 2016 to 2017.

Dr. Somsouk graduated from Harvard Medical School in 2002. Dr. Somsouk is a member of ACG and AGA.

Dr. Somsouk is in network with 9 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.