Margaret Zimmerman, MD
NPI 1073502282 · Pediatrics Physician · Fountain Valley, CA
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Margaret Zimmerman, MD is a Pediatrics Physician provider in Fountain Valley, CA (NPI 1073502282).
Provider details
- NPI number
- 1073502282
- Entity type
- Individual
- Primary specialty
- Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A86963 (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
- 2005-10-19
- Last updated
- 2023-11-14
- Certified
- 2023-11-07
Frequently asked questions
- What is Margaret Zimmerman's NPI number?
- Margaret Zimmerman's National Provider Identifier (NPI) is 1073502282, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Margaret Zimmerman's specialty?
- Margaret Zimmerman is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is Margaret Zimmerman located?
- Margaret Zimmerman's practice location on file with NPPES is 18035 Brookhurst St, Fountain Valley, CA 92708.
- What is Margaret Zimmerman's phone number?
- The practice phone number listed in the NPPES registry for Margaret Zimmerman is (657) 241-9090.
- Does Margaret Zimmerman accept Medicare?
- Margaret Zimmerman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Margaret Zimmerman's NPI active?
- Yes — Margaret Zimmerman's NPI (1073502282) is active in the NPPES registry as of the last update on 2023-11-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.