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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. MICHAEL THOMAS BRENNAN PHARMD
NPI 1336257773
Pharmacist - Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist in Boston, MA

Active since August 27, 2006
150 S HUNTINGTON AVE, BOSTON, MA 02130(857) 364-5033(857) 364-5337 Get Directions Write a Review

NPPES record last updated: August 27, 2026. Verified against the NPPES registry weekly; last sync: October 04, 2026.

About Dr. Michael Thomas Brennan Pharmd NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. MICHAEL THOMAS BRENNAN PHARMD (NPI 1336257773) is an individual pharmacist clinician (phc)/ clinical pharmacy specialist in Boston, Massachusetts, licensed in Massachusetts (26168) and active in the NPI registry since August 2006.

NPPES Registry Identity

NPI1336257773
Entity TypeIndividualMale
Primary Taxonomy1835P0018X
Provider Legal NameDR. MICHAEL THOMAS BRENNANCredential: PHARMD
Location Address150 S HUNTINGTON AVEBoston, MA 02130-4817
Mailing Address150 S Huntington AveBoston, MA 02130-4817 · (857) 364-5033 · Fax (857) 364-5337
Phone(857) 364-5033
Fax(857) 364-5337
Sole ProprietorYes
Enumeration DateAugust 27, 2006
Last NPPES UpdateAugust 27, 2026
NPPES CertifiedAugust 27, 2026
✔ NPI 1336257773 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPharmacist · Pharmacist Clinician (PhC)/ Clinical Pharmacy SpecialistPharmacy Service Providers
Taxonomy Code1835P0018X
License✔ Licensed in MA · 26168
Definition
Pharmacist Clinician/Clinical Pharmacy Specialist is a pharmacist with additional training and an expanded scope of practice that may include prescriptive authority, therapeutic management, and disease management.
Also ListedPharmacistTaxonomy 183500000X · License 26168 (MA)
150 S HUNTINGTON AVE, Boston, MA 02130
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Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. KAREN SUZANNE MITCHELL PHD
Psychologist (Clinical)
150 S HUNTINGTON AVE, 116B-3
BOSTON, MA 02130
Suffolk County (857) 364-2149
JENNA MARIE RENZULLI
Social Worker (Clinical)
150 S HUNTINGTON AVE
BOSTON, MA 02130
Suffolk County (617) 390-4872
TAYLOR LEIGH BROOKS PHD
Psychologist
150 S HUNTINGTON AVE
BOSTON, MA 02130
Suffolk County (857) 364-3189
DR. VALIA A BOOSALIS MD
Internal Medicine (Hematology & Oncology)
150 S HUNTINGTON AVE, IIIHO
BOSTON, MA 02130
Suffolk County (617) 232-9500
MS. RACHEL FAWN FURMAN R.N.
Registered Nurse
150 S HUNTINGTON AVE
BOSTON, MA 02130
Suffolk County (508) 649-1118
DR. KALYN ELIZABETH LAZAR PHARMD
Pharmacist
150 S HUNTINGTON AVE
BOSTON, MA 02130
Suffolk County (610) 217-0908
MRS. ELAINE MARIE FINNERAL LICSW
Social Worker (Clinical)
150 S HUNTINGTON AVE
BOSTON, MA 02130
Suffolk County (857) 364-5770
BARBARA L NILES PHD
Psychologist (Clinical)
150 S HUNTINGTON AVE, VA BOSTON HEALTHCARE SYSTEM
BOSTON, MA 02130
Suffolk County (857) 364-4128

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Michael Brennan's NPI number?

The NPI number for Michael Brennan is 1336257773. It was assigned to this individual provider in the NPPES registry on August 27, 2006.

Where is Michael Brennan located?

Michael Brennan practices at 150 S Huntington Ave, Boston, MA 02130. The listed phone number is (857) 364-5033.

What is Michael Brennan's specialty?

The primary specialty registered for this NPI is Pharmacist, specializing in Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist, with taxonomy code 1835P0018X.

When was this NPI record last updated?

The NPPES record for Michael Brennan was last updated on August 27, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 41 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.