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DR. MARNIE BAKER MD
NPI 1013907377
Pediatrics in Irvine, CA

Active since October 26, 2005PECOS Enrolled
4050 BARRANCA PKWY STE 170, IRVINE, CA 92604(949) 551-1090(949) 262-5500 Get Directions Write a Review

NPPES record last updated: May 12, 2021. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Marnie Baker Md NPPES

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

DR. MARNIE BAKER MD (NPI 1013907377) is an individual pediatrics provider in Irvine, California, licensed in California (A77478) and active in the NPI registry since October 2005. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1013907377
Entity TypeIndividualFemale
Primary Taxonomy208000000X
Provider Legal NameDR. MARNIE BAKERCredential: MD
Location Address4050 BARRANCA PKWY STE 170Irvine, CA 92604-4785
Mailing Address4050 Barranca Pkwy Ste 170Irvine, CA 92604-4785 · (949) 551-1090 · Fax (949) 262-5500
Phone(949) 551-1090
Fax(949) 262-5500
Sole ProprietorNo
Enumeration DateOctober 26, 2005
Last NPPES UpdateMay 12, 2021
NPPES CertifiedMay 12, 2021
✔ NPI 1013907377 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
License✔ Licensed in CA · A77478
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.
4050 BARRANCA PKWY STE 170, Irvine, CA 92604
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Marnie Baker 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.

Medicare Billing Reassignment

Medicare enrollment records show Marnie Baker reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Memorialcare Medical Foundation
8.6 mi
Clinic/Center
17360 BROOKHURST ST
Fountain Valley, CA 92708
  • Reassigned Medicare billing, California enrollment
  • 948 clinicians in this Medicare group
NPI 1205167350 (877) 696-3622

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92604 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 2

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

LINH NGUYEN ENGLAND M.D.
Pediatrics
4050 BARRANCA PKWY STE 170
IRVINE, CA 92604
Orange County (949) 551-1090
DR. LAUREN K HACKETT M.D.
Pediatrics
4050 BARRANCA PKWY STE 170
IRVINE, CA 92604
Orange County (949) 551-1090

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 Marnie Baker's NPI number?

The NPI number for Marnie Baker is 1013907377. It was assigned to this individual provider in the NPPES registry on October 26, 2005.

Where is Marnie Baker located?

Marnie Baker practices at 4050 Barranca Pkwy Ste 170, Irvine, CA 92604. The listed phone number is (949) 551-1090.

What is Marnie Baker's specialty?

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

Is Marnie Baker enrolled in Medicare?

Yes. Marnie Baker is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Marnie Baker's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Marnie Baker reassigns Medicare benefits to Memorialcare Medical Foundation (Fountain Valley, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Marnie Baker's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Marnie Baker was last updated on May 12, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years 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.