Erin Williams, MD
NPI 1134705908 · Pediatrics Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Erin Williams, MD is a Pediatrics Physician provider in San Francisco, CA (NPI 1134705908).
Provider details
- NPI number
- 1134705908
- Entity type
- Individual
- Primary specialty
- Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A199108 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
5 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)
- 300 Community DrManhasset, NY 11030-3816Phone: (516) 562-0100
Registry dates
- Enumerated
- 2021-03-22
- Last updated
- 2025-11-24
- Certified
- 2025-11-24
Frequently asked questions
- What is Erin Williams's NPI number?
- Erin Williams's National Provider Identifier (NPI) is 1134705908, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Erin Williams's specialty?
- Erin Williams is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is Erin Williams located?
- Erin Williams's practice location on file with NPPES is 1975 4th St, San Francisco, CA 94143-2351.
- What is Erin Williams's phone number?
- The practice phone number listed in the NPPES registry for Erin Williams is (415) 476-5153.
- Does Erin Williams accept Medicare?
- Erin Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Erin Williams's NPI active?
- Yes — Erin Williams's NPI (1134705908) is active in the NPPES registry as of the last update on 2025-11-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.