What is Barbara Williams's NPI number?

Barbara Williams's National Provider Identifier (NPI) is 1649509696, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Barbara Williams's specialty?

Barbara Williams is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).

Where is Barbara Williams located?

Barbara Williams's practice location on file with NPPES is 1001 S 57th St, Richmond, CA 94804-4806.

What is Barbara Williams's phone number?

The practice phone number listed in the NPPES registry for Barbara Williams is (925) 646-1444.

Is Barbara Williams's NPI active?

Yes — Barbara Williams's NPI (1649509696) is active in the NPPES registry as of the last update on 2009-12-21.

IndividualActive

Barbara Williams

NPI 1649509696 · Marriage & Family Therapist · Richmond, CA

Barbara Williams is a Marriage & Family Therapist provider in Richmond, CA (NPI 1649509696).

Provider details

NPI number: 1649509696
Entity type: Individual
Primary specialty: Marriage & Family TherapistBehavioral Health & Social Service Providers
Sex: Female
Sole proprietor: Yes

Specialties & taxonomies

Marriage & Family TherapistPrimary106H00000X
Behavioral Health & Social Service Providers

Profile Score

Detailed profile(78/100 index)

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

Registry tenure38% of score
16 yrs in NPPES registry
Profile completeness38% of score
83% 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

1001 S 57th St

Richmond, CA 94804-4806

Phone: (925) 646-1444

Fax: (510) 374-7033

Street-level locationGet directions

More CA providers

Mailing address

3908 Welch Way

Antioch, CA 94531-6673

Enumerated: 2009-12-21
Last updated: 2009-12-21

Frequently asked questions

What is Barbara Williams's NPI number?: Barbara Williams's National Provider Identifier (NPI) is 1649509696, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Barbara Williams's specialty?: Barbara Williams is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
Where is Barbara Williams located?: Barbara Williams's practice location on file with NPPES is 1001 S 57th St, Richmond, CA 94804-4806.
What is Barbara Williams's phone number?: The practice phone number listed in the NPPES registry for Barbara Williams is (925) 646-1444.
Is Barbara Williams's NPI active?: Yes — Barbara Williams's NPI (1649509696) is active in the NPPES registry as of the last update on 2009-12-21.

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