William Spivak, M.D.
NPI 1144360546 · Pediatric Gastroenterology Physician · New York, NY
Enrolled with Medicare as Order and Referring Only - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Spivak, M.D. is a Pediatric Gastroenterology Physician provider in New York, NY (NPI 1144360546).
Provider details
- NPI number
- 1144360546
- Entity type
- Individual
- Primary specialty
- Pediatric Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 131656 (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
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
- 2007-02-07
- Last updated
- 2007-07-08
Frequently asked questions
- What is William Spivak's NPI number?
- William Spivak's National Provider Identifier (NPI) is 1144360546, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Spivak's specialty?
- William Spivak is listed in the NPPES registry with a primary specialty of Pediatric Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is William Spivak located?
- William Spivak's practice location on file with NPPES is 177 E 87th St, New York, NY 10128-2226.
- What is William Spivak's phone number?
- The practice phone number listed in the NPPES registry for William Spivak is (212) 369-7700.
- Does William Spivak accept Medicare?
- William Spivak is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Spivak's NPI active?
- Yes — William Spivak's NPI (1144360546) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.