Grace Lay, DO
NPI 1629156211 · Internal Medicine Physician · South San Francisco, CA
Grace Lay, DO is a Internal Medicine Physician provider in South San Francisco, CA (NPI 1629156211).
Provider details
- NPI number
- 1629156211
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Female
- Sole proprietor
- No
- License
- 20A7427 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
- 2006-11-01
- Last updated
- 2007-07-08
Frequently asked questions
- What is Grace Lay's NPI number?
- Grace Lay's National Provider Identifier (NPI) is 1629156211, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Grace Lay's specialty?
- Grace Lay is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Grace Lay located?
- Grace Lay's practice location on file with NPPES is 1200 El Camino Real, South San Francisco, CA 94080-3208.
- What is Grace Lay's phone number?
- The practice phone number listed in the NPPES registry for Grace Lay is (650) 742-2000.
- Is Grace Lay's NPI active?
- Yes — Grace Lay's NPI (1629156211) 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.