Dr. Chelsea Joy Thomsen, MD, MSPH

Dr. Thomsen practices at One Medical Group in San Francisco, California.

Dr. Thomsen's NPI, 1003227927, was assigned on May 13, 2014. Dr. Thomsen graduated from The University of Arizona College of Medicine, Phoenix in 2014. Dr. Thomsen holds California license A170520.

Dr. Thomsen's primary practice is One Medical Group, at 2 W Portal Ave, San Francisco, CA 94127 in San Francisco County. The practice phone is (415) 578-3100.

Dr. Thomsen's primary practice is One Medical Group in San Francisco, California. Dr. Thomsen is also affiliated with California Pacific Medical Center Van Ness Campus. The medical group on file is One Medical. Dmand AI also links Dr. Thomsen to 3 more medical groups and 2 group practices and clinics, each named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Thomsen practices, 3 sites in all. Vendor and product names are available with a free account.

Internal medicine is Dr. Thomsen's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Thomsen is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Thomsen's licenses on file in 2 states: California and Arizona.

Dmand AI lists acute skin infection, chronic anemia, chronic diabetes, chronic hypertension, chronic indigestion, coronary artery disease, high cholesterol and insomnia among the conditions Dr. Thomsen treats.

CMS data shows 191 Medicare services from Dr. Thomsen across 5 procedure codes in 2024, for 73 Medicare patients. Medicare paid $13,213 for them. Every service was in an office.

CMS counts 73 Medicare patients who saw Dr. Thomsen in 2024. The largest group is 65 to 74, with 40 patients. 64% of them have high cholesterol, and 52% have high blood pressure. Their average risk score is 0.80, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Thomsen's median patient age at 48, with 62% women.

In 2024, Dr. Thomsen wrote 177 Medicare Part D claims for 34 patients. 88% of them were for generic drugs. CMS names the drug for 50 of them, across 3 drugs with 11 or more claims each, at $496 in total drug cost. In 2021, CMS named 64 claims across 4 drugs.

Dr. Thomsen accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Thomsen as offering telehealth.

CMS Open Payments shows 3 general payments to Dr. Thomsen from 3 drug and device companies from 2016 to 2018. Food and beverage make up the largest share, 100% of the total. Mallinckrodt LLC paid the most, $121.

Dr. Thomsen graduated from The University of Arizona College of Medicine, Phoenix in 2014.

Dr. Thomsen is in network with 8 carriers, including Blue Cross Blue Shield of Michigan, United Healthcare and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.