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

Gregory T Brennan, PA-C

Individual provider Medical Physician Assistant · NPI 1629300124

Gregory T Brennan, PA-C is a Physician Assistant in Boston, Massachusetts. Qualified in 2009, 17 years ago. Practices with Atrius Health Inc, a 1,205-clinician group and accepts Medicare assignment. Licensed in Massachusetts and New Hampshire.

Years since qualifying
17
Licensed in
MA, NH
In the registry since
2010
Specialties on file
2
What do these letters mean?
PA-C — Physician Assistant, Certified
A physician assistant who holds current national certification.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

147 Milk St
Boston, MA 02109-4806
Phone: (617) 559-8239
Fax: (617) 421-3487
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Specialties & licences

Physician Assistant (primary) Taxonomy 363A00000X · Licence PA4313 (MA)
Medical Physician Assistant Taxonomy 363AM0700X · Licence 0758 (NH)

Record details

NPI number1629300124
Entity typeIndividual (Type 1)
GenderMale
Credentials PA-C
Sole proprietorNo
NPI enumeratedFebruary 8, 2010
Last updated in NPPESJanuary 11, 2012

Medicare enrollment

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

Medicare specialtyPHYSICIAN ASSISTANT
Medical schoolOTHER
Graduated 2009 (17 years in practice)
Group practice Atrius Health Inc — 1205 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Other providers in Boston