Mary Williams, CRNP
NPI 1538168653 · Pediatric Nurse Practitioner · York, PA
Mary Williams, CRNP is a Pediatric Nurse Practitioner provider in York, PA (NPI 1538168653).
Provider details
- NPI number
- 1538168653
- Entity type
- Individual
- Primary specialty
- Pediatric Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- CRNP
- Sex
- Female
- Sole proprietor
- No
- License
- VP006051D (PA)
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
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
- 2005-07-20
- Last updated
- 2010-07-14
Frequently asked questions
- What is Mary Williams's NPI number?
- Mary Williams's National Provider Identifier (NPI) is 1538168653, 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 Pediatric Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mary Williams located?
- Mary Williams's practice location on file with NPPES is 2675 Joppa Rd, York, PA 17403-5160.
- What is Mary Williams's phone number?
- The practice phone number listed in the NPPES registry for Mary Williams is (717) 741-9063.
- Is Mary Williams's NPI active?
- Yes — Mary Williams's NPI (1538168653) is active in the NPPES registry as of the last update on 2010-07-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.