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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. MARIA SILVIA MARTINEZ-WIKEFELDT M.D.
NPI 1164554846
Pediatrics in Fountain Valley, CA

Active since March 09, 2007PECOS Enrolled
76.74/100
CMS Quality Rating
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 02, 2026.

Record update history: Nov 14, 2023, Jul 11, 2019, Mar 17, 2018 and 1 more (4 updates tracked since 2017).

About Dr. Maria Silvia Martinez-wikefeldt M.d. NPPES

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

DR. MARIA SILVIA MARTINEZ-WIKEFELDT M.D. (NPI 1164554846) is an individual pediatrics provider in Fountain Valley, California, licensed in California (A77837) and active in the NPI registry since March 2007. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1164554846
Entity TypeIndividualFemale
Primary Taxonomy208000000X
Provider Legal NameDR. MARIA SILVIA MARTINEZ-WIKEFELDTCredential: M.D.
Location Address18785 BROOKHURST ST., SUITE 200Fountain Valley, CA 92708-6738
Mailing Address18785 Brookhurst St., Suite 200Fountain Valley, CA 92708-6738 · (714) 378-5330 · Fax (657) 276-4743
Phone(714) 378-5330
Fax(657) 276-4743
Sole ProprietorNo
Enumeration DateMarch 9, 2007
Last NPPES UpdateJune 11, 20264 updates tracked since enumeration
NPPES CertifiedJune 11, 2026
✔ NPI 1164554846 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
License✔ Licensed in CA · A77837
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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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Maria Silvia Martinez-wikefeldt M.d. 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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

76.74/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality80.94
Promoting Interoperability78
Improvement Activities40
Cost55.12

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.

MARGARET ZIMMERMAN MD
Pediatrics
18785 BROOKHURST ST., SUITE 200
FOUNTAIN VALLEY, CA 92708
Orange County (714) 378-5330
IHONG CHEN MD
Internal Medicine
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 Maria Silvia Martinez-wikefeldt's NPI number?

The NPI number for Maria Silvia Martinez-wikefeldt is 1164554846. It was assigned to this individual provider in the NPPES registry on March 9, 2007.

Where is Maria Silvia Martinez-wikefeldt located?

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

What is Maria Silvia Martinez-wikefeldt's specialty?

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

Is Maria Silvia Martinez-wikefeldt enrolled in Medicare?

Yes. Maria Silvia Martinez-wikefeldt is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Maria Silvia Martinez-wikefeldt 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 57 days 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.