What is Marc Williams's NPI number?

Marc Williams's National Provider Identifier (NPI) is 1013749886, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Marc Williams's specialty?

Marc Williams is listed in the NPPES registry with a primary specialty of Case Manager/Care Coordinator (Other Service Providers).

Where is Marc Williams located?

Marc Williams's practice location on file with NPPES is 2751 Napa Valley Corporate Dr Bldg B, Napa, CA 94558-6216.

What is Marc Williams's phone number?

The practice phone number listed in the NPPES registry for Marc Williams is (707) 227-3900.

Is Marc Williams's NPI active?

Yes — Marc Williams's NPI (1013749886) is active in the NPPES registry as of the last update on 2024-08-19.

IndividualActive

Marc Williams

NPI 1013749886 · Case Manager/Care Coordinator · Napa, CA

Marc Williams is a Case Manager/Care Coordinator provider in Napa, CA (NPI 1013749886).

Provider details

NPI number: 1013749886
Entity type: Individual
Primary specialty: Case Manager/Care CoordinatorOther Service Providers
Sex: Male
Sole proprietor: Yes

Specialties & taxonomies

Case Manager/Care CoordinatorPrimary171M00000X
Other Service Providers

Profile Score

Basic profile(49/100 index)

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

Registry tenure38% of score
1 yr 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

2751 Napa Valley Corporate Dr Bldg B

Napa, CA 94558-6216

Phone: (707) 227-3900

Street-level locationGet directions

More CA providers

Mailing address