Michael J. Brennan, M.D. LLC
NPI 1700997848 · Pain Medicine (Physical Medicine & Rehabilitation) Physician · Fairfield, CT
Michael J. Brennan, M.D. LLC is a Pain Medicine (Physical Medicine & Rehabilitation) Physician organization in Fairfield, CT (NPI 1700997848).
Provider details
- NPI number
- 1700997848
- Entity type
- Organization
- Primary specialty
- Pain Medicine (Physical Medicine & Rehabilitation) PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Michael Brennan, President(203) 255-3451
Specialties & taxonomies
Allopathic & Osteopathic Physicians
- Chiropractor111N00000X
Chiropractic Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-31
- Last updated
- 2008-06-24
Frequently asked questions
- What is Michael J. Brennan, M.D. LLC's NPI number?
- Michael J. Brennan, M.D. LLC's National Provider Identifier (NPI) is 1700997848, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Michael J. Brennan, M.D. LLC?
- Michael J. Brennan, M.D. LLC is classified in the NPPES registry as Pain Medicine (Physical Medicine & Rehabilitation) Physician (Allopathic & Osteopathic Physicians).
- Where is Michael J. Brennan, M.D. LLC located?
- Michael J. Brennan, M.D. LLC's practice location on file with NPPES is 140 Sherman St, Fairfield, CT 06824-5849.
- What is Michael J. Brennan, M.D. LLC's phone number?
- The practice phone number listed in the NPPES registry for Michael J. Brennan, M.D. LLC is (203) 255-3451.
- Who is the authorized official for Michael J. Brennan, M.D. LLC?
- The authorized official listed on Michael J. Brennan, M.D. LLC's NPPES record is Michael Brennan, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Michael J. Brennan, M.D. LLC's NPI active?
- Yes — Michael J. Brennan, M.D. LLC's NPI (1700997848) is active in the NPPES registry as of the last update on 2008-06-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.