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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

DR. WILLIAM PATRICK BRENNAN JR. PHARMD
NPI 1659319507
Pharmacist - Pharmacotherapy in West Roxbury, MA

Active since June 03, 2006
1400 VFW PKWY, WEST ROXBURY, MA 02132(857) 203-5213(857) 203-5625 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. William Patrick Brennan Jr. Pharmd NPPES

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

DR. WILLIAM PATRICK BRENNAN JR. PHARMD (NPI 1659319507) is an individual pharmacotherapy provider in West Roxbury, Massachusetts, licensed in Massachusetts (24041) and active in the NPI registry since June 2006.

NPPES Registry Identity

NPI1659319507
Entity TypeIndividualMale
Primary Taxonomy1835P1200X
Provider Legal NameDR. WILLIAM PATRICK BRENNAN JR.Credential: PHARMD
Location Address1400 VFW PKWYWest Roxbury, MA 02132-4927
Mailing Address29 Summit RdWellesley, MA 02482-4614 · (781) 416-4385
Phone(857) 203-5213
Fax(857) 203-5625
Sole ProprietorNo
Enumeration DateJune 3, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1659319507 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPharmacist · PharmacotherapyPharmacy Service Providers
Taxonomy Code1835P1200X
License✔ Licensed in MA · 24041
Definition
A licensed pharmacist who has demonstrated specialized knowledge and skill in optimizing pharmacotherapeutic care of patients, by developing, implementing, monitoring, and modifying complex treatment plans, providing advanced level education and consultation, and collaborating with other health professionals in the management of therapy.
1400 VFW PKWY, West Roxbury, MA 02132
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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.

TERESA CZEPIEL OTR/L
Occupational Therapist
1400 VFW PKWY
WEST ROXBURY, MA 02132
Suffolk County (413) 313-6274
ANDREW NGUYEN PA-C
Physician Assistant (Surgical)
1400 VFW PKWY
WEST ROXBURY, MA 02132
Suffolk County (508) 682-1432
JACQUELYN A QUIN M.D.
Thoracic Surgery (Cardiothoracic Vascular Surgery)
1400 VFW PKWY
WEST ROXBURY, MA 02132
Suffolk County (857) 203-6202
DAVID JAMES THORNTON M.D.
Internal Medicine (Infectious Disease)
1400 VFW PKWY
WEST ROXBURY, MA 02132
Suffolk County (617) 203-5062
DR. LEENDER JACK FALING MD
Internal Medicine (Pulmonary Disease)
1400 VFW PKWY
WEST ROXBURY, MA 02132
Suffolk County (617) 323-7700
MRS. PATRICIA O'HEARN SOONTHORNPRAPUET PA-C, MPH
Physician Assistant (Surgical)
1400 VFW PKWY
WEST ROXBURY, MA 02132
Suffolk County (617) 323-7700
BERNADETTE ANN CUMMINGS OTR/L
Occupational Therapist
1400 VFW PKWY
WEST ROXBURY, MA 02132
Suffolk County (617) 323-7700
ANNA CARSTENS MENSING FNP
Nurse Practitioner (Acute Care)
1400 VFW PKWY
WEST ROXBURY, MA 02132
Suffolk County (617) 323-7700

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 William Brennan's NPI number?

The NPI number for William Brennan is 1659319507. It was assigned to this individual provider in the NPPES registry on June 3, 2006.

Where is William Brennan located?

William Brennan practices at 1400 Vfw Pkwy, West Roxbury, MA 02132. The listed phone number is (857) 203-5213.

What is William Brennan's specialty?

The primary specialty registered for this NPI is Pharmacist, specializing in Pharmacotherapy, with taxonomy code 1835P1200X.

When was this NPI record last updated?

The NPPES record for William Brennan was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 23 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.