Marina Fronshtein, MD
NPI 1134353436 · Internal Medicine Physician · Brooklyn, NY
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marina Fronshtein, MD is a Internal Medicine Physician provider in Brooklyn, NY (NPI 1134353436).
Provider details
- NPI number
- 1134353436
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 258283 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
17 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
- 2009-05-14
- Last updated
- 2014-08-15
Frequently asked questions
- What is Marina Fronshtein's NPI number?
- Marina Fronshtein's National Provider Identifier (NPI) is 1134353436, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marina Fronshtein's specialty?
- Marina Fronshtein is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Marina Fronshtein located?
- Marina Fronshtein's practice location on file with NPPES is 800 Poly Pl, Brooklyn, NY 11209-7104.
- What is Marina Fronshtein's phone number?
- The practice phone number listed in the NPPES registry for Marina Fronshtein is (718) 836-6600.
- Does Marina Fronshtein accept Medicare?
- Marina Fronshtein is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marina Fronshtein's NPI active?
- Yes — Marina Fronshtein's NPI (1134353436) is active in the NPPES registry as of the last update on 2014-08-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.