Gregory Zapantis, M.D.
NPI 1538287529 · Reproductive Endocrinology Physician · Syosset, NY
Gregory Zapantis, M.D. is a Reproductive Endocrinology Physician provider in Syosset, NY (NPI 1538287529).
Provider details
- NPI number
- 1538287529
- Entity type
- Individual
- Primary specialty
- Reproductive Endocrinology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 220304 (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
- 2007-03-27
- Last updated
- 2023-06-14
- Certified
- 2023-06-14
Frequently asked questions
- What is Gregory Zapantis's NPI number?
- Gregory Zapantis's National Provider Identifier (NPI) is 1538287529, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Zapantis's specialty?
- Gregory Zapantis is listed in the NPPES registry with a primary specialty of Reproductive Endocrinology Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Zapantis located?
- Gregory Zapantis's practice location on file with NPPES is 300 S Oyster Bay Rd, Syosset, NY 11791-6229.
- What is Gregory Zapantis's phone number?
- The practice phone number listed in the NPPES registry for Gregory Zapantis is (516) 605-2626.
- Is Gregory Zapantis's NPI active?
- Yes — Gregory Zapantis's NPI (1538287529) is active in the NPPES registry as of the last update on 2023-06-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.