Cathryn Williams, PSY.D
NPI 1003241969 · Clinical Psychologist · Worcester, MA
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Cathryn Williams, PSY.D is a Clinical Psychologist provider in Worcester, MA (NPI 1003241969).
Provider details
- NPI number
- 1003241969
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PSY.D
- Sex
- Female
- Sole proprietor
- Yes
- License
- 10391 (MA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
12 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
- 2013-09-11
- Last updated
- 2022-05-26
- Certified
- 2022-05-26
Frequently asked questions
- What is Cathryn Williams's NPI number?
- Cathryn Williams's National Provider Identifier (NPI) is 1003241969, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Cathryn Williams's specialty?
- Cathryn Williams is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Cathryn Williams located?
- Cathryn Williams's practice location on file with NPPES is 100 Century Dr, Worcester, MA 01606-1244.
- What is Cathryn Williams's phone number?
- The practice phone number listed in the NPPES registry for Cathryn Williams is (508) 762-6400.
- Does Cathryn Williams accept Medicare?
- Cathryn Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Cathryn Williams's NPI active?
- Yes — Cathryn Williams's NPI (1003241969) is active in the NPPES registry as of the last update on 2022-05-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.