Gregory Hayner, PHARM.D.
NPI 1578634721 · Pharmacotherapy Pharmacist · South San Francisco, CA
Gregory Hayner, PHARM.D. is a Pharmacotherapy Pharmacist provider in South San Francisco, CA (NPI 1578634721).
Provider details
- NPI number
- 1578634721
- Entity type
- Individual
- Primary specialty
- Pharmacotherapy PharmacistPharmacy Service Providers
- Credential
- PHARM.D.
- Sex
- Male
- Sole proprietor
- No
- License
- RPH31416 (CA)
Specialties & taxonomies
Pharmacy Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 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
- 2006-11-10
- Last updated
- 2007-07-08
Frequently asked questions
- What is Gregory Hayner's NPI number?
- Gregory Hayner's National Provider Identifier (NPI) is 1578634721, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Hayner's specialty?
- Gregory Hayner is listed in the NPPES registry with a primary specialty of Pharmacotherapy Pharmacist (Pharmacy Service Providers).
- Where is Gregory Hayner located?
- Gregory Hayner's practice location on file with NPPES is 1200 El Camino Real, South San Francisco, CA 94080-3208.
- What is Gregory Hayner's phone number?
- The practice phone number listed in the NPPES registry for Gregory Hayner is (650) 742-7242.
- Is Gregory Hayner's NPI active?
- Yes — Gregory Hayner's NPI (1578634721) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.