Dr. Peter M. Schaefer, MD

Dr. Schaefer practices at Mass General Brigham Community Physicians Inc in Somerville, Massachusetts.

Dr. Schaefer's NPI, 1710336193, was assigned on June 7, 2016. Dr. Schaefer holds Massachusetts license 290954.

Dr. Schaefer's primary practice is Mass General Brigham Community Physicians Inc, at 399 Revolution Dr, Somerville, MA 02145 in Middlesex County. The practice phone is (781) 395-4909.

Dr. Schaefer's primary practice is Mass General Brigham Community Physicians Inc in Somerville, Massachusetts. Dr. Schaefer is also affiliated with Massachusetts General Hospital. The medical group on file is Massachusetts General Physicians Organization (MGPO). Dmand AI also links Dr. Schaefer to 3 more hospitals and 2 medical groups, each named with a free account.

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

Diagnostic radiology is Dr. Schaefer's primary specialty in the NPI Registry, under taxonomy code 2085R0202X. Dr. Schaefer is licensed in Massachusetts.

CMS data shows 521 Medicare services from Dr. Schaefer across 16 procedure codes in 2024, for 379 Medicare patients. Medicare paid $30,009 for them. Every service was in a facility, such as a hospital, rather than an office.

CMS counts 379 Medicare patients who saw Dr. Schaefer in 2024. The largest group is 75 to 84, with 138 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 27% are also on Medicaid. Their average risk score is 3.28, 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. Schaefer's median patient age at 70, with 46% women.

In 2024, Dr. Schaefer wrote 14 Medicare Part D claims. 100% of them were for generic drugs.

Dr. Schaefer accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Removal of skin lesions: 1 to 10 procedures (CMS shows small counts as a range)

Varicose vein removal: 1 to 10 procedures (CMS shows small counts as a range)

CMS Open Payments shows 13 general payments to Dr. Schaefer from 5 drug and device companies from 2020 to 2025. Food and beverage make up the largest share, 90% of the total. Boston Scientific Corporation paid the most, $352.