Physician Profile
Leigh M. Firn, MD
Unclaimed ProfileAbout Dr. Firn
Leigh M. Firn, MD is a healthcare provider in Cambridge, MA specializing in internal medicine. This provider record is associated with NPI 1194706507.
Factual summary compiled by Guide.md from public records; not written by this provider.
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (617) 253-4909
- Email not available
Practice Locations
77 MASSACHUSETTS AVE MIT E23/225
Cambridge, MA 02139
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other internists at this location 5
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 4
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 8 related providers in 1 group
Common questions
What does Dr. Firn specialize in?
Dr. Firn is an internist in Cambridge, MA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Internal Medicine”.
NPI registry
Where is Dr. Firn located?
Dr. Firn is listed at 77 Massachusetts Ave Mit E23/225, Cambridge, MA 02139. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Firn's phone number?
The number on file is (617) 253-4909. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Dr. Firn?
Dr. Firn's National Provider Identifier is 1194706507. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
How much experience does Dr. Firn have?
Dr. Firn has 21+ years experience. Registered with an NPI since 2005. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.
NPI registry
Is Dr. Firn's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Firn. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.