Marietta Williams, MS, CCC-SLP
NPI 1376062422 · Speech-Language Pathologist · Napa, CA
Marietta Williams, MS, CCC-SLP is a Speech-Language Pathologist provider in Napa, CA (NPI 1376062422).
Provider details
- NPI number
- 1376062422
- Entity type
- Individual
- Primary specialty
- Speech-Language PathologistSpeech, Language and Hearing Service Providers
- Credential
- MS, CCC-SLP
- Sex
- Female
- Sole proprietor
- Yes
- License
- 25253 (CA)
Specialties & taxonomies
Speech, Language and Hearing 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
- 2017-09-10
- Last updated
- 2022-07-21
Frequently asked questions
- What is Marietta Williams's NPI number?
- Marietta Williams's National Provider Identifier (NPI) is 1376062422, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marietta Williams's specialty?
- Marietta Williams is listed in the NPPES registry with a primary specialty of Speech-Language Pathologist (Speech, Language and Hearing Service Providers).
- Where is Marietta Williams located?
- Marietta Williams's practice location on file with NPPES is 1079 Century Ct, Napa, CA 94558-4206.
- What is Marietta Williams's phone number?
- The practice phone number listed in the NPPES registry for Marietta Williams is (908) 875-6334.
- Is Marietta Williams's NPI active?
- Yes — Marietta Williams's NPI (1376062422) is active in the NPPES registry as of the last update on 2022-07-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.