Jack Greenberg, M.D.
NPI 1508075193 · Family Medicine Physician · Brea, CA
Enrolled with Medicare as Order and Referring Only - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jack Greenberg, M.D. is a Family Medicine Physician provider in Brea, CA (NPI 1508075193).
Provider details
- NPI number
- 1508075193
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- G14072 (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
- 2007-05-21
- Last updated
- 2007-07-08
Frequently asked questions
- What is Jack Greenberg's NPI number?
- Jack Greenberg's National Provider Identifier (NPI) is 1508075193, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jack Greenberg's specialty?
- Jack Greenberg is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Jack Greenberg located?
- Jack Greenberg's practice location on file with NPPES is 340 W Central Ave, Brea, CA 92821-3006.
- What is Jack Greenberg's phone number?
- The practice phone number listed in the NPPES registry for Jack Greenberg is (714) 671-7830.
- Does Jack Greenberg accept Medicare?
- Jack Greenberg is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jack Greenberg's NPI active?
- Yes — Jack Greenberg's NPI (1508075193) 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.