JAMES PHILIP WILLIAMS MD
NPI 1831403120
Pediatrics in Nogales, AZ

Q: What is James Williams's NPI number?

The NPI number for James Williams is 1831403120. It was assigned to this individual provider in the NPPES registry on July 29, 2010.

Q: What is James Williams's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for James Williams was last updated on May 26, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.

Active since July 29, 2010PECOS EnrolledAccepts Medicare Assignment

1852 N MASTICK WAY, NOGALES, AZ 85621(520) 375-6007(520) 281-1112 Get Directions Write a Review

NPPES record last updated: May 26, 2022. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: May 26, 2022, Apr 10, 2019 (2 updates tracked since 2019).

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About James Philip Williams Md NPPES

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

JAMES PHILIP WILLIAMS MD (NPI 1831403120) is an individual pediatrics provider in Nogales, Arizona, licensed in Arizona (43562) and active in the NPI registry since July 2010. He is enrolled in Medicare PECOS and is a graduate of Indiana University School Of Medicine (2007).

NPPES Registry Identity

NPI1831403120

Entity TypeIndividualMale

Primary Taxonomy208000000X

Provider Legal NameJAMES PHILIP WILLIAMSCredential: MD

Location Address1852 N MASTICK WAYNogales, AZ 85621-1063

Mailing Address825 N Grand Ave Ste 100Nogales, AZ 85621-1061 · (520) 761-2133 · Fax (520) 281-1112

Phone(520) 375-6007

Fax(520) 281-1112

Sole ProprietorNo

Medical School CMSIndiana University School Of MedicineGraduated 2007

Enumeration DateJuly 29, 2010

Last NPPES UpdateMay 26, 20222 updates tracked since enumeration

NPPES CertifiedMay 26, 2022

✔ NPI 1831403120 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians

Taxonomy Code208000000X

License✔ Licensed in AZ · 43562

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.

1852 N MASTICK WAY, Nogales, AZ 85621

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Other Identifiers 1

Medicaid539080AZ

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arizona Complete Health, Ambetter Health, Antidote Health Plan of Arizona, Inc. and more.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

James Philip Williams Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID9436345881

PECOS Enrollment IDI20101124000100

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 Reassignments

Medicare enrollment records show James Williams reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Mariposa Community Health Center, Inc

Same address

Federally Qualified Health Center (FQHC)

1852 N MASTICK WAY
Nogales, AZ 85621

Reassigned Medicare billing, Arizona enrollment
60 clinicians in this Medicare group

NPI 1417985474 (520) 281-1550

Nextcare Arizona LLC

154 mi

Urgent Care

914 N SCOTTSDALE RD STE 104
Tempe, AZ 85288

Reassigned Medicare billing, Arizona enrollment
367 clinicians in this Medicare group

NPI 1043371826 (480) 924-8382

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 85621 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.

Other Providers at the Same Location NPPES 20

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

MARIPOSA COMMUNITY HEALTH CENTER, INC

Radiology (Diagnostic Radiology)