What is Stephen Ash's NPI number?

Stephen Ash's National Provider Identifier (NPI) is 1437128279, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Stephen Ash's specialty?

Stephen Ash is listed in the NPPES registry with a primary specialty of General Practice Physician (Allopathic & Osteopathic Physicians).

Where is Stephen Ash located?

Stephen Ash's practice location on file with NPPES is 5410 W Thunderbird, Glendale, AZ 85306-4711.

What is Stephen Ash's phone number?

The practice phone number listed in the NPPES registry for Stephen Ash is (602) 530-6189.

Does Stephen Ash accept Medicare?

Stephen Ash is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Stephen Ash's NPI active?

Yes — Stephen Ash's NPI (1437128279) is active in the NPPES registry as of the last update on 2007-07-08.

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Stephen Ash, MD

NPI 1437128279 · General Practice Physician · Glendale, AZ

Stephen Ash, MD is a General Practice Physician provider in Glendale, AZ (NPI 1437128279).

Provider details

NPI number: 1437128279
Entity type: Individual
Primary specialty: General Practice PhysicianAllopathic & Osteopathic Physicians
Credential: MD
Sex: Male
License: 15494 (AZ)

Practice location

5410 W Thunderbird

Ste 101

Glendale, AZ 85306-4711

Phone: (602) 530-6189

Fax: (602) 548-2292

Street-level locationGet directions

More AZ providers

Mailing address

5410 W Thunderbird Rd

Glendale, AZ 85306-4711

Specialties & taxonomies

General Practice PhysicianPrimary208D00000XLicense 15494 (AZ)
Allopathic & Osteopathic Physicians

Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Profile Score

Established profile(66/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure28% of score
20 yrs in NPPES registry
Profile completeness28% of score
100% of core fields populated
Practice footprint17% of score
1 documented practice location
Medicare service volume (vs. specialty peers)28% of score
42 Medicare services, 2024 (ranked within specialty)

Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

What this provider does (Medicare)

Based on Medicare fee-for-service claims, 2024; not all care is captured.

Service (HCPCS)	Medicare services	Typical Medicare-allowed (2024)
Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213	27	$85
New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203	15	$106

Typical Medicare-allowed amounts for these services range $85–$106 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.

What this provider prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 3 distinct drugs on file.

Drug	Part D claims (2024)	Beneficiaries
Doxycycline Monohydrate	18	18
Cefdinir	14	14
Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass	12	12

Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do not include cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.

Enumerated: 2006-03-15
Last updated: 2007-07-08

Frequently asked questions

What is Stephen Ash's NPI number?: Stephen Ash's National Provider Identifier (NPI) is 1437128279, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Stephen Ash's specialty?: Stephen Ash is listed in the NPPES registry with a primary specialty of General Practice Physician (Allopathic & Osteopathic Physicians).
Where is Stephen Ash located?: Stephen Ash's practice location on file with NPPES is 5410 W Thunderbird, Glendale, AZ 85306-4711.
What is Stephen Ash's phone number?: The practice phone number listed in the NPPES registry for Stephen Ash is (602) 530-6189.
Does Stephen Ash accept Medicare?: Stephen Ash is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Stephen Ash's NPI active?: Yes — Stephen Ash's NPI (1437128279) is active in the NPPES registry as of the last update on 2007-07-08.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

What this provider does (Medicare)

Based on Medicare fee-for-service claims, 2024; not all care is captured.

Service (HCPCS)	Medicare services	Typical Medicare-allowed (2024)
Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213	27	$85
New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203	15	$106

What this provider prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 3 distinct drugs on file.

Drug	Part D claims (2024)	Beneficiaries
Doxycycline Monohydrate	18	18
Cefdinir	14	14
Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass	12	12

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

What this provider does (Medicare)

What this provider prescribes (Medicare Part D)

Registry dates

Frequently asked questions

Specialties & taxonomies

Frequently asked questions

Profile Score

What this provider does (Medicare)

What this provider prescribes (Medicare Part D)