Maria Williams, RN, IBCLC
NPI 1649785510 · Registered Nurse · San Francisco, CA
Maria Williams, RN, IBCLC is a Registered Nurse provider in San Francisco, CA (NPI 1649785510).
Provider details
- NPI number
- 1649785510
- Entity type
- Individual
- Primary specialty
- Registered NurseNursing Service Providers
- Credential
- RN, IBCLC
- Sex
- Female
- Sole proprietor
- Yes
- License
- 808885 (CA)
Specialties & taxonomies
Nursing Service Providers
Nursing Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
8 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
- 2017-12-13
- Last updated
- 2017-12-13
Frequently asked questions
- What is Maria Williams's NPI number?
- Maria Williams's National Provider Identifier (NPI) is 1649785510, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Maria Williams's specialty?
- Maria Williams is listed in the NPPES registry with a primary specialty of Registered Nurse (Nursing Service Providers).
- Where is Maria Williams located?
- Maria Williams's practice location on file with NPPES is 1755 27th Ave., San Francisco, CA 94122.
- What is Maria Williams's phone number?
- The practice phone number listed in the NPPES registry for Maria Williams is (612) 868-4160.
- Is Maria Williams's NPI active?
- Yes — Maria Williams's NPI (1649785510) is active in the NPPES registry as of the last update on 2017-12-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.