Michael Gerstenfeld, M.D.
NPI 1740311208 · Internal Medicine Physician · Danbury, CT
Enrolled with Medicare as Practitioner - Physical Medicine and Rehabilitation · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Gerstenfeld, M.D. is a Internal Medicine Physician provider in Danbury, CT (NPI 1740311208).
Provider details
- NPI number
- 1740311208
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 31959 (CT)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 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
- 2007-03-08
- Last updated
- 2011-12-31
Frequently asked questions
- What is Michael Gerstenfeld's NPI number?
- Michael Gerstenfeld's National Provider Identifier (NPI) is 1740311208, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Gerstenfeld's specialty?
- Michael Gerstenfeld is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Gerstenfeld located?
- Michael Gerstenfeld's practice location on file with NPPES is 46 Mill Plain Rd, Danbury, CT 06811-5140.
- What is Michael Gerstenfeld's phone number?
- The practice phone number listed in the NPPES registry for Michael Gerstenfeld is (203) 297-6120.
- Does Michael Gerstenfeld accept Medicare?
- Michael Gerstenfeld is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Gerstenfeld's NPI active?
- Yes — Michael Gerstenfeld's NPI (1740311208) is active in the NPPES registry as of the last update on 2011-12-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.