John Grigsby, A.T.C.
NPI 1134661838 · Athletic Trainer · Orinda, CA
John Grigsby, A.T.C. is a Athletic Trainer provider in Orinda, CA (NPI 1134661838).
Provider details
- NPI number
- 1134661838
- Entity type
- Individual
- Primary specialty
- Athletic TrainerRespiratory, Developmental, Rehabilitative and Restorative Service Providers
- Credential
- A.T.C.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 040502063 (CA)
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
9 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
- 2016-11-11
- Last updated
- 2016-11-11
Frequently asked questions
- What is John Grigsby's NPI number?
- John Grigsby's National Provider Identifier (NPI) is 1134661838, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Grigsby's specialty?
- John Grigsby is listed in the NPPES registry with a primary specialty of Athletic Trainer (Respiratory, Developmental, Rehabilitative and Restorative Service Providers).
- Where is John Grigsby located?
- John Grigsby's practice location on file with NPPES is 750 Moraga Way, Orinda, CA 94563-4330.
- What is John Grigsby's phone number?
- The practice phone number listed in the NPPES registry for John Grigsby is (925) 280-3930.
- Is John Grigsby's NPI active?
- Yes — John Grigsby's NPI (1134661838) is active in the NPPES registry as of the last update on 2016-11-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.