What is Barbara Williamson's NPI number?

Barbara Williamson's National Provider Identifier (NPI) is 1306943451, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Barbara Williamson's specialty?

Barbara Williamson is listed in the NPPES registry with a primary specialty of Advanced Practice Midwife (Physician Assistants & Advanced Practice Nursing Providers).

Where is Barbara Williamson located?

Barbara Williamson's practice location on file with NPPES is 1030 Nevin Ave, Richmond, CA 94801-3122.

What is Barbara Williamson's phone number?

The practice phone number listed in the NPPES registry for Barbara Williamson is (510) 215-5001.

Is Barbara Williamson's NPI active?

Yes — Barbara Williamson's NPI (1306943451) is active in the NPPES registry as of the last update on 2012-11-08.

IndividualActive

Barbara Williamson, NMW 956, NP6576, RN3

NPI 1306943451 · Advanced Practice Midwife · Richmond, CA

Barbara Williamson, NMW 956, NP6576, RN3 is a Advanced Practice Midwife provider in Richmond, CA (NPI 1306943451).

Provider details

NPI number: 1306943451
Entity type: Individual
Primary specialty: Advanced Practice MidwifePhysician Assistants & Advanced Practice Nursing Providers
Credential: NMW 956, NP6576, RN3
Sex: Female
Sole proprietor: No
License: 321816 (CA)

Specialties & taxonomies

Advanced Practice MidwifePrimary367A00000XLicense NMW956 (CA)
Physician Assistants & Advanced Practice Nursing Providers
Ambulatory Women's Health Care Registered Nurse163WW0101XLicense 321816 (CA)
Nursing Service Providers
Women's Health Nurse Practitioner363LW0102XLicense 6576 (CA)
Physician Assistants & Advanced Practice Nursing Providers
Advanced Practice Midwife367A00000XLicense 956 (CA)
Physician Assistants & Advanced Practice Nursing Providers
Women's Health Clinical Nurse Specialist364SW0102XLicense NP6576 (CA)
Physician Assistants & Advanced Practice Nursing Providers

Profile Score

Detailed profile(90/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
19 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

1030 Nevin Ave

Richmond, CA 94801-3122

Phone: (510) 215-5001

Fax: (510) 215-1115

Street-level locationGet directions

More CA providers

Mailing address

1179 N. Mcdowell Blvd

Petaluma, CA 94954

Enumerated: 2006-09-20
Last updated: 2012-11-08

Frequently asked questions

What is Barbara Williamson's NPI number?: Barbara Williamson's National Provider Identifier (NPI) is 1306943451, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Barbara Williamson's specialty?: Barbara Williamson is listed in the NPPES registry with a primary specialty of Advanced Practice Midwife (Physician Assistants & Advanced Practice Nursing Providers).
Where is Barbara Williamson located?: Barbara Williamson's practice location on file with NPPES is 1030 Nevin Ave, Richmond, CA 94801-3122.
What is Barbara Williamson's phone number?: The practice phone number listed in the NPPES registry for Barbara Williamson is (510) 215-5001.
Is Barbara Williamson's NPI active?: Yes — Barbara Williamson's NPI (1306943451) is active in the NPPES registry as of the last update on 2012-11-08.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.