Alex Williamson, M.D.
NPI 1659552438 · Anatomic Pathology & Clinical Pathology Physician · New Hyde Park, NY
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Alex Williamson, M.D. is a Anatomic Pathology & Clinical Pathology Physician provider in New Hyde Park, NY (NPI 1659552438).
Provider details
- NPI number
- 1659552438
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology & Clinical Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 2566821 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
18 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
- 2007-11-20
- Last updated
- 2016-03-25
Frequently asked questions
- What is Alex Williamson's NPI number?
- Alex Williamson's National Provider Identifier (NPI) is 1659552438, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alex Williamson's specialty?
- Alex Williamson is listed in the NPPES registry with a primary specialty of Anatomic Pathology & Clinical Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is Alex Williamson located?
- Alex Williamson's practice location on file with NPPES is 6 Ohio Dr, New Hyde Park, NY 11042-1124.
- What is Alex Williamson's phone number?
- The practice phone number listed in the NPPES registry for Alex Williamson is (516) 304-7265.
- Does Alex Williamson accept Medicare?
- Alex Williamson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Alex Williamson's NPI active?
- Yes — Alex Williamson's NPI (1659552438) is active in the NPPES registry as of the last update on 2016-03-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.