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MARGARET ZIMMERMAN MD
NPI 1073502282
Pediatrics in Fountain Valley, CA

Active since October 19, 2005PECOS Enrolled
18785 BROOKHURST ST., SUITE 200, FOUNTAIN VALLEY, CA 92708(714) 378-5330(657) 276-4743 Get Directions Write a Review

NPPES record last updated: June 11, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Nov 14, 2023, Oct 10, 2016, May 20, 2016 (3 updates tracked since 2016).

About Margaret Zimmerman Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MARGARET ZIMMERMAN MD (NPI 1073502282) is an individual pediatrics provider in Fountain Valley, California, licensed in California (A86963) and active in the NPI registry since October 2005. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1073502282
Entity TypeIndividualFemale
Primary Taxonomy208000000X
Provider Legal NameMARGARET ZIMMERMANCredential: MD
Location Address18785 BROOKHURST ST., SUITE 200Fountain Valley, CA 92708
Mailing Address18785 Brookhurst St., Suite 200Fountain Valley, CA 92708 · (714) 378-5330 · Fax (657) 276-4743
Phone(714) 378-5330
Fax(657) 276-4743
Sole ProprietorNo
Enumeration DateOctober 19, 2005
Last NPPES UpdateJune 11, 20263 updates tracked since enumeration
NPPES CertifiedJune 11, 2026
✔ NPI 1073502282 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
License✔ Licensed in CA · A86963
Definition
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.
18785 BROOKHURST ST., SUITE 200, Fountain Valley, CA 92708
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Other Identifiers 1

Medicaid00A869630CA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Margaret Zimmerman Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92708 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$96.36 typical visit price
range $62.96 – $187.60
Typical copayment $24.09 (range $15.74 – $46.90)
Most-billed visit code 99203
Established Patient
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 4

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

IHONG CHEN MD
Internal Medicine
18785 BROOKHURST ST., SUITE 200
FOUNTAIN VALLEY, CA 92708
Orange County (714) 378-5330
DR. MARIA SILVIA MARTINEZ-WIKEFELDT M.D.
Pediatrics
18785 BROOKHURST ST., SUITE 200
FOUNTAIN VALLEY, CA 92708
Orange County (714) 378-5330
LALITA M. KOMANAPALLI MD
Internal Medicine
18785 BROOKHURST ST., SUITE 200
FOUNTAIN VALLEY, CA 92708
Orange County (714) 378-5330
DR. JOHN WEIJUNE WANG M.D.
Internal Medicine
18785 BROOKHURST ST., SUITE 200
FOUNTAIN VALLEY, CA 92708
Orange County (714) 378-5330

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Margaret Zimmerman's NPI number?

The NPI number for Margaret Zimmerman is 1073502282. It was assigned to this individual provider in the NPPES registry on October 19, 2005.

Where is Margaret Zimmerman located?

Margaret Zimmerman practices at 18785 Brookhurst St., Suite 200, Fountain Valley, CA 92708. The listed phone number is (714) 378-5330.

What is Margaret Zimmerman's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Is Margaret Zimmerman enrolled in Medicare?

Yes. Margaret Zimmerman is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Margaret Zimmerman was last updated on June 11, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.