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DR. LEIGH M FIRN MD
NPI 1194706507
Internal Medicine in Cambridge, MA

Active since November 11, 2005
77 MASSACHUSETTS AVE, MIT E23/225, CAMBRIDGE, MA 02139(617) 253-4909 Get Directions Write a Review

NPPES record last updated: April 12, 2012. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Dr. Leigh M Firn Md NPPES

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

DR. LEIGH M FIRN MD (NPI 1194706507) is an individual internal medicine provider in Cambridge, Massachusetts, licensed in Massachusetts (57872) and active in the NPI registry since November 2005.

NPPES Registry Identity

NPI1194706507
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. LEIGH M FIRNCredential: MD
Location Address77 MASSACHUSETTS AVE, MIT E23/225Cambridge, MA 02139-4301
Mailing Address25 Carleton Street, E23Cambridge, MA 02139-4307 · (617) 253-4988
Phone(617) 253-4909
Sole ProprietorNo
Enumeration DateNovember 11, 2005
Last NPPES UpdateApril 12, 2012
✔ NPI 1194706507 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in MA · 57872
Definition

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.

77 MASSACHUSETTS AVE, Cambridge, MA 02139
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Other Identifiers 1

Medicare UPINE60755

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.

ADELE M SMITH RPT ATC
Physical Therapist
77 MASSACHUSETTS AVE, E23-395
CAMBRIDGE, MA 02139
Middlesex County (617) 253-0556
KRISTEN ELIZABETH CASCIO LICSW
Counselor (Mental Health)
77 MASSACHUSETTS AVE
CAMBRIDGE, MA 02139
Middlesex County (781) 261-0179
DR. DAVID VAN DIAMOND MD
Internal Medicine
77 MASSACHUSETTS AVE, MIT E23/209
CAMBRIDGE, MA 02139
Middlesex County (617) 253-7625
AMELIA LEUTZ R.N., F.N.P.-B.C.
Nurse Practitioner (Family)
77 MASSACHUSETTS AVE, BUILDING E23
CAMBRIDGE, MA 02139
Middlesex County (617) 253-0566
DR. ANNIE S LIAU MD
Obstetrics & Gynecology
77 MASSACHUSETTS AVE, MIT E23 319
CAMBRIDGE, MA 02139
Middlesex County (617) 253-1315
DR. MICHAEL ALOYSIUS KANE MD
Internal Medicine
77 MASSACHUSETTS AVE, MIT MEDICAL DEPARTMENT
CAMBRIDGE, MA 02139
Middlesex County (617) 253-7825
JESSICA ROONEY GALLAGHER ATC
Specialist/Technologist (Athletic Trainer)
77 MASSACHUSETTS AVE, KASSER SPORTS MEDICINE CENTER
CAMBRIDGE, MA 02139
Middlesex County (617) 216-6519
TANNAZ SHAPURIAN DMD, MS
Dentist (Periodontics)
77 MASSACHUSETTS AVE, E23-515
CAMBRIDGE, MA 02139
Middlesex County (617) 253-1501

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 Leigh Firn's NPI number?

The NPI number for Leigh Firn is 1194706507. It was assigned to this individual provider in the NPPES registry on November 11, 2005.

Where is Leigh Firn located?

Leigh Firn practices at 77 Massachusetts Ave Mit E23/225, Cambridge, MA 02139. The listed phone number is (617) 253-4909.

What is Leigh Firn's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

When was this NPI record last updated?

The NPPES record for Leigh Firn was last updated on April 12, 2012. NPI Profile syncs with the weekly NPPES data releases published by CMS.