Katherine Day
NPI 1609559947 · Rehabilitation Practitioner · San Jose, CA
Katherine Day is a Rehabilitation Practitioner provider in San Jose, CA (NPI 1609559947).
Provider details
- NPI number
- 1609559947
- Entity type
- Individual
- Primary specialty
- Rehabilitation PractitionerRespiratory, Developmental, Rehabilitative and Restorative Service Providers
- Sex
- Female
- Sole proprietor
- Yes
Specialties & taxonomies
Respiratory, Developmental, Rehabilitative and Restorative Service Providers
- Case Manager/Care Coordinator171M00000X
Other Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
2 yrs in NPPES 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
- 2023-08-11
- Last updated
- 2025-05-30
- Certified
- 2025-05-30
Frequently asked questions
- What is Katherine Day's NPI number?
- Katherine Day's National Provider Identifier (NPI) is 1609559947, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katherine Day's specialty?
- Katherine Day is listed in the NPPES registry with a primary specialty of Rehabilitation Practitioner (Respiratory, Developmental, Rehabilitative and Restorative Service Providers).
- Where is Katherine Day located?
- Katherine Day's practice location on file with NPPES is 2001 the Alameda, San Jose, CA 95126-1136.
- What is Katherine Day's phone number?
- The practice phone number listed in the NPPES registry for Katherine Day is (408) 261-7777.
- Is Katherine Day's NPI active?
- Yes — Katherine Day's NPI (1609559947) is active in the NPPES registry as of the last update on 2025-05-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.