Katherine Williams, PAC
NPI 1861689390 · Physician Assistant · Thousand Oaks, CA
Katherine Williams, PAC is a Physician Assistant provider in Thousand Oaks, CA (NPI 1861689390).
Provider details
- NPI number
- 1861689390
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PAC
- Sex
- Female
- Sole proprietor
- No
- License
- 2007028606 (MO)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 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
- 2007-09-28
- Last updated
- 2017-02-07
Frequently asked questions
- What is Katherine Williams's NPI number?
- Katherine Williams's National Provider Identifier (NPI) is 1861689390, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katherine Williams's specialty?
- Katherine Williams is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Katherine Williams located?
- Katherine Williams's practice location on file with NPPES is 375 Rolling Oaks Dr, Thousand Oaks, CA 91361-1023.
- What is Katherine Williams's phone number?
- The practice phone number listed in the NPPES registry for Katherine Williams is (805) 497-7015.
- Is Katherine Williams's NPI active?
- Yes — Katherine Williams's NPI (1861689390) is active in the NPPES registry as of the last update on 2017-02-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.