Cal Williams
NPI 1730794199 · Occupational Therapist · Cambridge, MA
Cal Williams is a Occupational Therapist provider in Cambridge, MA (NPI 1730794199).
Provider details
- NPI number
- 1730794199
- Entity type
- Individual
- Primary specialty
- Occupational TherapistRespiratory, Developmental, Rehabilitative and Restorative Service Providers
- Sex
- Male
- Sole proprietor
- Yes
- License
- 13628 (MA)
Specialties & taxonomies
Respiratory, Developmental, Rehabilitative and Restorative Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
5 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
- 2020-09-12
- Last updated
- 2020-09-12
- Certified
- 2020-09-12
Frequently asked questions
- What is Cal Williams's NPI number?
- Cal Williams's National Provider Identifier (NPI) is 1730794199, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Cal Williams's specialty?
- Cal Williams is listed in the NPPES registry with a primary specialty of Occupational Therapist (Respiratory, Developmental, Rehabilitative and Restorative Service Providers).
- Where is Cal Williams located?
- Cal Williams's practice location on file with NPPES is 1493 Cambridge St, Cambridge, MA 02139-1099.
- What is Cal Williams's phone number?
- The practice phone number listed in the NPPES registry for Cal Williams is (617) 665-1000.
- Is Cal Williams's NPI active?
- Yes — Cal Williams's NPI (1730794199) is active in the NPPES registry as of the last update on 2020-09-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.