Colleen Masi
NPI 1821943176 · Rehabilitation Practitioner · Fairfield, CA
Colleen Masi is a Rehabilitation Practitioner provider in Fairfield, CA (NPI 1821943176).
Provider details
- NPI number
- 1821943176
- Entity type
- Individual
- Primary specialty
- Rehabilitation PractitionerRespiratory, Developmental, Rehabilitative and Restorative Service Providers
- Sex
- Female
- Sole proprietor
- No
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
Under 1 yr in 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
Mailing address
Registry dates
- Enumerated
- 2026-03-02
- Last updated
- 2026-03-06
- Certified
- 2026-03-06
Frequently asked questions
- What is Colleen Masi's NPI number?
- Colleen Masi's National Provider Identifier (NPI) is 1821943176, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Colleen Masi's specialty?
- Colleen Masi is listed in the NPPES registry with a primary specialty of Rehabilitation Practitioner (Respiratory, Developmental, Rehabilitative and Restorative Service Providers).
- Where is Colleen Masi located?
- Colleen Masi's practice location on file with NPPES is 2261 S Watney Way, Fairfield, CA 94533-6757.
- What is Colleen Masi's phone number?
- The practice phone number listed in the NPPES registry for Colleen Masi is (707) 344-9295.
- Is Colleen Masi's NPI active?
- Yes — Colleen Masi's NPI (1821943176) is active in the NPPES registry as of the last update on 2026-03-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.