Independent US Healthcare Provider Directory & Public Medical Database
Active NPI 1053458406 Individual Practitioner Male Practitioner

Dr. Patrick Brennan , MD, PhD

Internal Medicine • Boston, MA

✓ Accepts Medicare Assignment Telehealth Available

Professional Overview & Biography Verified Profile Summary

Dr. Patrick Brennan, MD, PhD is a certified Internal Medicine practicing in Boston, MA. With approximately 21 years of clinical experience since graduating from Perelman School Of Med At The University Of Pennsylvania in 2005, Dr. Brennan delivers high-quality medical care to the local community at 75 FRANCIS ST.

Dr. Brennan is affiliated with Brigham And Womens Physicians Organization Inc and accepts Medicare assignment . Telehealth and virtual consultation options are available for eligible patients.

Frequently performed procedures and clinical services include test for allergy using allergenic extract, new patient outpatient office visit, established patient outpatient office visit. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

75 Francis St

Boston, MA 021156110

Telephone 6177329850
Associated Practice Facility / Clinic

Medicare Profile & Education

Medical School

Perelman School Of Med At The University Of Pennsylvania

Graduation Year

2005

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

Telehealth Services Available

Specialty Benchmarks & Practice Insights

Comparative analytics for Internal Medicine in Boston, MA

Senior Veteran Specialist (>20 Yrs)
Practitioner Clinical Experience
21 Yrs +3.6 yrs vs City Avg
City Avg: 17.4 Yrs
State Avg: 29.3 Yrs
Regional Practice Density
2379 Specialists

Practicing in Boston, MA (7127 Statewide)

Telehealth Adoption Rate
24.8% Regional Adoption

✓ Offers Virtual Consultations

Medicare Pricing Discount
76.1% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Brennan (21 Years) 21 Yrs
Boston Specialty Average (17.4 Years) 17.4 Yrs

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2024)
Reporting Year:
HCPCS Code & Description Services Patients Submitted Charge Medicare Allowed
95004 Test for allergy using allergenic extract
217 11 $29.00 $4.14
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more
40 40 $710.80 $163.97
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
34 29 $445.38 $110.77
99213 Established patient office or other outpatient visit, typically 15 minutes
16 15 $308.13 $78.40

Medical Specialties & State Licenses

Internal Medicine Primary Specialty

NUCC Taxonomy Code: 207R00000X

State License MA 231427

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Hospital & Practice Group Affiliations

Brigham And Womens Physicians Organization Inc

75 Francis St, Boston, MA 021156110

Phone: 6177325500

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

20 Associated Practitioners
Laura Fanning

Allergy & Immunology

NPI 1043493067
NPI 1164403119

Doctor of Medicine (M.D.)

Dr. Matthew Giannetti , MD

Allergy & Immunology

NPI 1164716171

Doctor of Medicine (M.D.)

Dr. Margee Louisias , MD

Allergy & Immunology

NPI 1255590345

Doctor of Medicine (M.D.)

Dr. David Hong , MD

Allergy & Immunology

NPI 1316079908

Doctor of Medicine (M.D.)

Dr. Ronit Herzog , MD

Pediatrics - Pediatric Allergy/Immunology

NPI 1346317823

Doctor of Medicine (M.D.)

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

6 Historical Events
NPI Profile Active May 15, 2012

NPI status registered as active in NPPES database

📍
Updated Practice Location May 15, 2012

Registered at 75 FRANCIS ST, BOSTON, MA 021156110 (Tel: 6177329850)

📍
Updated Business Mailing Address May 15, 2012

Registered at 111 CYPRESS ST, BROOKLINE, MA 024456002 (Tel: 8573070896)

👤
Provider Name / Credentials Updated May 15, 2012

Recorded as PATRICK BRENNAN, M.D., PH.D.

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) May 15, 2012

Internal Medicine (License #231427 in MA)

🟢
Initial NPI Registration & Enumeration February 01, 2007

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

0 Reviews
No patient reviews submitted yet for Dr. Patrick Brennan. Be the first to share your experience!

Sign in to leave a review for Dr. Patrick Brennan

Only verified registered users can submit ratings, post feedback, and upload facility photos.

NPI Administrative Meta

NPI Number: 1053458406
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: February 01, 2007
Last Update: May 15, 2012
Sole Proprietor: No

Mailing Address

111 Cypress St

Brookline, MA 024456002

Phone: 8573070896

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).
⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.