Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Sean C Osullivan, PHYSICIANASSISTANT

Individual provider Physician Assistant · NPI 1437103090

Sean C Osullivan, PHYSICIANASSISTANT is a Physician Assistant in Brewster, New York. Qualified in 2003, 23 years ago. Practices with Optum Medical Care PC, a 1,018-clinician group and accepts Medicare assignment. Licensed in New York.

Years since qualifying
23
Licensed in
NY
In the registry since
2006

Practice location Address checks out

111 Clock Tower Cmns Northern Medical Group Pllc
Brewster, NY 10509-4055
Phone: (845) 592-4915
Fax: (845) 592-4914
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Physician Assistant (primary) Taxonomy 363A00000X · Licence 009491 (NY)

Record details

NPI number1437103090
Entity typeIndividual (Type 1)
GenderMale
Credentials PHYSICIANASSISTANT
Sole proprietorNo
NPI enumeratedMay 19, 2006
Last updated in NPPESFebruary 11, 2017

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyPHYSICIAN ASSISTANT
Medical schoolOTHER
Graduated 2003 (23 years in practice)
Group practice Optum Medical Care Pc — 1018 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Brewster