Gregory Antkowiak, MD
NPI 1154307775 · Geriatric Medicine (Internal Medicine) Physician · San Diego, CA
Gregory Antkowiak, MD is a Geriatric Medicine (Internal Medicine) Physician provider in San Diego, CA (NPI 1154307775).
Provider details
- NPI number
- 1154307775
- Entity type
- Individual
- Primary specialty
- Geriatric Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A78990 (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
20 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
- 2005-12-15
- Last updated
- 2014-12-18
Frequently asked questions
- What is Gregory Antkowiak's NPI number?
- Gregory Antkowiak's National Provider Identifier (NPI) is 1154307775, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Antkowiak's specialty?
- Gregory Antkowiak is listed in the NPPES registry with a primary specialty of Geriatric Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Antkowiak located?
- Gregory Antkowiak's practice location on file with NPPES is 2810 Camino Del Rio S, San Diego, CA 92108-3818.
- What is Gregory Antkowiak's phone number?
- The practice phone number listed in the NPPES registry for Gregory Antkowiak is (619) 299-1419.
- Is Gregory Antkowiak's NPI active?
- Yes — Gregory Antkowiak's NPI (1154307775) is active in the NPPES registry as of the last update on 2014-12-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.