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WILLIAM RAY MOSTOW M.D.
NPI 1922057348
Emergency Medicine in Sun City, AZ

Active since May 10, 2006PECOS EnrolledAccepts Medicare Assignment
76.13/100
CMS Quality Rating
14502 WEST MEEKER BOULEVARD, SUN CITY, AZ 85375(623) 214-4000 Get Directions Write a Review

NPPES record last updated: January 14, 2009. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About William Ray Mostow M.d. NPPES

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

WILLIAM RAY MOSTOW M.D. (NPI 1922057348) is an individual emergency medicine provider in Sun City, Arizona, licensed in Arizona (26337) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS and is a graduate of Northwestern University Feinberg Medical School (1989).

NPPES Registry Identity

NPI1922057348
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NameWILLIAM RAY MOSTOWCredential: M.D.
Location Address14502 WEST MEEKER BOULEVARDSun City, AZ 85375
Mailing Address2100 Powell Street Ste 920Emeryville, CA 94608-1803 · (510) 350-2777
Phone(623) 214-4000
Sole ProprietorNo
Medical School CMSNorthwestern University Feinberg Medical SchoolGraduated 1989
Enumeration DateMay 10, 2006
Last NPPES UpdateJanuary 14, 2009
✔ NPI 1922057348 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
License✔ Licensed in AZ · 26337
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
14502 WEST MEEKER BOULEVARD, Sun City, AZ 85375
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Other Identifiers 3

Medicare UPINF23695AZ
Medicaid428236AZ
Medicare PIN109994AZ

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross Blue Shield of Arizona.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

William Ray Mostow M.d. 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 ID9436050549
PECOS Enrollment IDI20060802000529
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.

Areas of Expertise CMS Part B claims 4

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Emergency department visit with high level of medical decision making 99285
An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.
519 services510 patients
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010
A routine electrocardiogram (ECG) with 12 leads is a simple, non-invasive test that records the electrical activity of your heart. It helps in identifying heart conditions by detecting irregularities in your heart rhythms. The results are interpreted and a report is provided.
361 services352 patients
Emergency department visit with moderate level of medical decision making 99284
An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.
89 services89 patients
Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
76 services76 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 85375 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.

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.

76.13/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality69.43
Improvement Activities40

Other Providers at the Same Location NPPES 3

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

AARON C MCKINNEY M.D.
Emergency Medicine
14502 WEST MEEKER BOULEVARD
SUN CITY, AZ 85375
Maricopa County (623) 214-4000
DAVID JOHN BENNETT D.O
Family Medicine
14502 WEST MEEKER BOULEVARD
SUN CITY WEST, AZ 85375
Maricopa County (623) 214-4000
ANDREW A BRAINARD M.D.
Family Medicine
14502 WEST MEEKER BOULEVARD
WEST SUN CITY, AZ 85375
Maricopa County (623) 214-4000

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 William Mostow's NPI number?

The NPI number for William Mostow is 1922057348. It was assigned to this individual provider in the NPPES registry on May 10, 2006.

Where is William Mostow located?

William Mostow practices at 14502 West Meeker Boulevard, Sun City, AZ 85375. The listed phone number is (623) 214-4000.

What is William Mostow's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is William Mostow enrolled in Medicare?

Yes. William Mostow is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does William Mostow accept?

Health plans from Blue Cross Blue Shield of Arizona list William Mostow as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for William Mostow was last updated on January 14, 2009. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.