Zachary Williamson, M.D.
NPI 1346668928 · Public Health & General Preventive Medicine Physician · Princeton, NJ
Enrolled with Medicare as Order and Referring Only - Preventive Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Zachary Williamson, M.D. is a Public Health & General Preventive Medicine Physician provider in Princeton, NJ (NPI 1346668928).
Provider details
- NPI number
- 1346668928
- Entity type
- Individual
- Primary specialty
- Public Health & General Preventive Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- MD463202 (PA)
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
12 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Additional practice locations (1)
- 800 Spruce StPhiladelphia, PA 19107-6130Phone: (215) 829-3000
Registry dates
- Enumerated
- 2014-04-01
- Last updated
- 2020-01-23
- Certified
- 2020-01-23
Frequently asked questions
- What is Zachary Williamson's NPI number?
- Zachary Williamson's National Provider Identifier (NPI) is 1346668928, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Zachary Williamson's specialty?
- Zachary Williamson is listed in the NPPES registry with a primary specialty of Public Health & General Preventive Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Zachary Williamson located?
- Zachary Williamson's practice location on file with NPPES is 508 Carnegie Ctr, Princeton, NJ 08540-6259.
- What is Zachary Williamson's phone number?
- The practice phone number listed in the NPPES registry for Zachary Williamson is (609) 524-6788.
- Does Zachary Williamson accept Medicare?
- Zachary Williamson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Zachary Williamson's NPI active?
- Yes — Zachary Williamson's NPI (1346668928) is active in the NPPES registry as of the last update on 2020-01-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.