John Greco, MD
NPI 1558303438 · General Practice Physician · Syosset, NY
John Greco, MD is a General Practice Physician provider in Syosset, NY (NPI 1558303438).
Provider details
- NPI number
- 1558303438
- Entity type
- Individual
- Primary specialty
- General Practice PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 166212 (NY)
Specialties & taxonomies
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
20 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
- 2006-06-12
- Last updated
- 2015-05-27
Frequently asked questions
- What is John Greco's NPI number?
- John Greco's National Provider Identifier (NPI) is 1558303438, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Greco's specialty?
- John Greco is listed in the NPPES registry with a primary specialty of General Practice Physician (Allopathic & Osteopathic Physicians).
- Where is John Greco located?
- John Greco's practice location on file with NPPES is 33 Ann Dr, Syosset, NY 11791-5906.
- What is John Greco's phone number?
- The practice phone number listed in the NPPES registry for John Greco is (516) 238-6516.
- Is John Greco's NPI active?
- Yes — John Greco's NPI (1558303438) is active in the NPPES registry as of the last update on 2015-05-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.