John Michael Sullivan, PA-C

John Sullivan practices at Brigham and Women's Hospital in Boston, Massachusetts, part of Mass General Brigham.

John Sullivan's NPI, 1689204356, was assigned on January 22, 2020.

John Sullivan's primary practice is Brigham and Women's Hospital, at 75 Francis Street, Boston, MA 02115 in Suffolk County. The practice phone is (617) 732-5500.

John Sullivan's primary practice is Brigham and Women's Hospital in Boston, Massachusetts, part of Mass General Brigham. John Sullivan is also affiliated with Salem Hospital. The medical group on file is Brigham and Women's Hospital. Dmand AI also links John Sullivan to 1 more hospital, 1 group practice or clinic and 1 hospital outpatient department, each named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where John Sullivan practices, 5 sites in all. Vendor and product names are available with a free account.

Physician assistant is John Sullivan's primary specialty in the NPI Registry, under taxonomy code 363A00000X. John Sullivan has a license on file in Massachusetts.

CMS counts 117 Medicare patients who saw John Sullivan in 2024. The largest group is under 65, with 51 patients. 57% of them have high cholesterol, and 55% have mood disorders. 39% are also on Medicaid. Their average risk score is 1.64, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts John Sullivan's median patient age at 60, with 67% women.

In 2024, John Sullivan wrote 353 Medicare Part D claims for 79 patients. 84% of them were for generic drugs.

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

CMS Open Payments shows 2 general payments to John Sullivan from 1 drug or device company in 2025. Consulting fees make up the largest share, 92% of the total. TG Therapeutics, Inc. paid the most, $1,172.