Mary Williams, PA-C
NPI 1285871046 · Physician Assistant · Portsmouth, OH
Mary Williams, PA-C is a Physician Assistant provider in Portsmouth, OH (NPI 1285871046).
Provider details
- NPI number
- 1285871046
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Female
- Sole proprietor
- No
- License
- 2869 (OH)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
17 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
- 2009-01-15
- Last updated
- 2009-01-15
Frequently asked questions
- What is Mary Williams's NPI number?
- Mary Williams's National Provider Identifier (NPI) is 1285871046, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Williams's specialty?
- Mary Williams is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mary Williams located?
- Mary Williams's practice location on file with NPPES is 840 Gallia St, Portsmouth, OH 45662-4164.
- What is Mary Williams's phone number?
- The practice phone number listed in the NPPES registry for Mary Williams is (740) 353-3236.
- Is Mary Williams's NPI active?
- Yes — Mary Williams's NPI (1285871046) is active in the NPPES registry as of the last update on 2009-01-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.