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JOHN MICHAEL LAMBERT M.D.
NPI 1437337391
Pediatrics in Fort Defiance, AZ

Active since February 03, 2008PECOS Enrolled
NAVAJO ROUTE N12 AND N7, FDIH TSEHOOTSOOI MEDICAL CENTER NAVAJO NATION, FORT DEFIANCE, AZ 86504(928) 729-8000(928) 729-8269 Get Directions Write a Review

NPPES record last updated: August 11, 2011. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About John Michael Lambert M.d. NPPES

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

JOHN MICHAEL LAMBERT M.D. (NPI 1437337391) is an individual pediatrics provider in Fort Defiance, Arizona, licensed in Utah (7754413-1205) and active in the NPI registry since February 2008. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1437337391
Entity TypeIndividualMale
Primary Taxonomy208000000X
Provider Legal NameJOHN MICHAEL LAMBERTCredential: M.D.
Location AddressNAVAJO ROUTE N12 AND N7, FDIH TSEHOOTSOOI MEDICAL CENTER NAVAJO NATIONFort Defiance, AZ 86504
Mailing Address926 47th St, Apt. #1cBrooklyn, NY 11219-2861
Phone(928) 729-8000
Fax(928) 729-8269
Sole ProprietorYes
Enumeration DateFebruary 3, 2008
Last NPPES UpdateAugust 11, 2011
✔ NPI 1437337391 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
License✔ Licensed in UT · 7754413-1205
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.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
NAVAJO ROUTE N12 AND N7, Fort Defiance, AZ 86504
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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)

John Michael Lambert 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.

Medicare Billing Reassignment

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

Mission Area Health Associates
750 mi
Federally Qualified Health Center (FQHC)
240 SHOTWELL ST
San Francisco, CA 94110
  • Reassigned Medicare billing, California enrollment
  • 30 clinicians in this Medicare group
NPI 1457427411 (415) 552-1013

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 86504 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
$85.89 typical visit price
range $55.44 – $168.60
Typical copayment $21.47 (range $13.86 – $42.15)
Most-billed visit code 99203
Established Patient
$98.00 typical visit price
range $17.72 – $137.41
Typical copayment $24.50 (range $4.43 – $34.35)
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.

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 John Lambert's NPI number?

The NPI number for John Lambert is 1437337391. It was assigned to this individual provider in the NPPES registry on February 3, 2008.

Where is John Lambert located?

John Lambert practices at Navajo Route N12 And N7 Fdih Tsehootsooi Medical Center Navajo Nation, Fort Defiance, AZ 86504. The listed phone number is (928) 729-8000.

What is John Lambert's specialty?

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

Is John Lambert enrolled in Medicare?

Yes. John Lambert is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for John Lambert's services?

According to the CMS Revalidation Reassignment List (October 2026 release), John Lambert reassigns Medicare benefits to Mission Area Health Associates (San Francisco, 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 John Lambert'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 John Lambert was last updated on August 11, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.