Nathaniel Sergay, MD
NPI 1609499052 · Pediatrics Physician · Brooklyn, NY
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nathaniel Sergay, MD is a Pediatrics Physician provider in Brooklyn, NY (NPI 1609499052).
Provider details
- NPI number
- 1609499052
- Entity type
- Individual
- Primary specialty
- Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 329849 (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
6 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
- 2020-05-20
- Last updated
- 2024-09-18
- Certified
- 2024-09-18
Frequently asked questions
- What is Nathaniel Sergay's NPI number?
- Nathaniel Sergay's National Provider Identifier (NPI) is 1609499052, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nathaniel Sergay's specialty?
- Nathaniel Sergay is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is Nathaniel Sergay located?
- Nathaniel Sergay's practice location on file with NPPES is 20 Plaza St E, Brooklyn, NY 11238-4955.
- What is Nathaniel Sergay's phone number?
- The practice phone number listed in the NPPES registry for Nathaniel Sergay is (718) 857-5500.
- Does Nathaniel Sergay accept Medicare?
- Nathaniel Sergay is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nathaniel Sergay's NPI active?
- Yes — Nathaniel Sergay's NPI (1609499052) is active in the NPPES registry as of the last update on 2024-09-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.