Mary Williamson, PHD
NPI 1225402894 · Clinical Laboratory Director (Non-physician) · Rochester, NY
Mary Williamson, PHD is a Clinical Laboratory Director (Non-physician) provider in Rochester, NY (NPI 1225402894).
Provider details
- NPI number
- 1225402894
- Entity type
- Individual
- Primary specialty
- Clinical Laboratory Director (Non-physician)Technologists, Technicians & Other Technical Service Providers
- Credential
- PHD
- Sex
- Female
- Sole proprietor
- No
- License
- WILLM7 (NY)
Specialties & taxonomies
Technologists, Technicians & Other Technical Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
10 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
- 2015-11-19
- Last updated
- 2015-11-19
Frequently asked questions
- What is Mary Williamson's NPI number?
- Mary Williamson's National Provider Identifier (NPI) is 1225402894, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Williamson's specialty?
- Mary Williamson is listed in the NPPES registry with a primary specialty of Clinical Laboratory Director (Non-physician) (Technologists, Technicians & Other Technical Service Providers).
- Where is Mary Williamson located?
- Mary Williamson's practice location on file with NPPES is 160 Elmgrove Park, Rochester, NY 14624-1359.
- What is Mary Williamson's phone number?
- The practice phone number listed in the NPPES registry for Mary Williamson is (585) 429-2226.
- Is Mary Williamson's NPI active?
- Yes — Mary Williamson's NPI (1225402894) is active in the NPPES registry as of the last update on 2015-11-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.