2026 NPPES data Internal Medicine Physician NPI 1033525456 M.D.
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EZZADDIN AL WAHSH, M.D.

Internal Medicine Physician in PARKER, Arizona. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
651
Medicare Part D claims · 223 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
88%
generic claims · 12% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: EZZADDIN AL WAHSH, M.D. is a Internal Medicine Physician ([object Object]) practicing in PARKER, Arizona with a Medicare Part D prescribing footprint of 651 claims across 223 beneficiaries — 12% brand-name prescribing .

What stands out: EZZADDIN AL WAHSH, M.D. filed 651 Medicare Part D claims in 2023 across PARKER, Arizona. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

EZZADDIN AL WAHSH, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 3 hospital affiliations — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

EZZADDIN AL WAHSH, M.D. at a glance

Quality data not reported

NPI registry status

Active

Issued 07/07/2014

NPI 1033525456

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

651 76% vs specialty avg

2023 prescription claims

Specialty avg: 2,716

Specialty distribution in Arizona

How Internal Medicine Physician compares to other specialties among Arizona providers

Arizona providers

Internal Medicine Physician share within Arizona

1. Internal Medicine Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Internal Medicine Physician share within Arizona

Specialty board-certification context

Estimated specialty board-certified rate — Internal Medicine Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Internal Medicine Physician ABMS/AOA estimate

Est. board-certified rate (Internal Medicine Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Internal Medicine Physician) — ABMS / AOA estimate

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

EZZADDIN AL WAHSH, M.D. is a Internal Medicine Physician provider practicing in PARKER, Arizona, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1033525456. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

EZZADDIN AL WAHSH, M.D. appears in the CMS NPPES registry as a Internal Medicine Physician provider holding M.D. credentials at 12033 AGENCY RD, PARKER, AZ, 85344, with a listed phone of (928) 669-2137. NPI 1033525456 was issued on 07/07/2014. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what AL WAHSH most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 651 prescription claims written by this provider, covering 223 Medicare beneficiaries and totaling roughly $62K in drug spend, split 12% brand-name and 88% generic by claim count. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Internal Medicine Physician is a high-volume specialty nationwide, with 172,858 enrolled providers across 56 states and an average of 2,716 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

12033 AGENCY RD
PARKER, AZ 85344

Provider Details

NPI 1033525456
Specialty Internal Medicine Physician
Credentials M.D.
Gender Male
NPI Issued 07/07/2014

Hospital and facility affiliations

Facilities where EZZADDIN AL WAHSH, M.D. bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" — a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.

ALOMERE HEALTH
★★★★☆ 4/5
ALEXANDRIA, MN
Acute Care Hospitals
CMS CCN: 240030
GALEN INPATIENT PHYSICIANS PC
GREENBRAE, CA
MAYO CLINIC HEALTH SYSTEM-SOUTHWEST MINNESOTA REGION
MANKATO, MN

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Brand vs generic prescribing mix · Typical

EZZADDIN AL WAHSH, M.D. — brand share 12.0%
Specialty average (est.)

12% brand-name claims vs 88% generic, on 651 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

651
Total Claims
$62K
Total Drug Cost
223
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,286
Total Day Supply
36,695
Brand vs Generic
12% brand / 88% generic
Brand Drug Cost
$52K
Generic Drug Cost
$10K
Antibiotic Claims
11

Patient Demographics

Average Patient Age
74.4 years
Avg HCC Risk Score
1.76
Gender Split
49% female / 51% male
Age Distribution
<65: 25, 65-74: 85, 75-84: 76, 85+: 37

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Losartan Potassium
35
Metoprolol Tartrate
30
Metoprolol Succinate
29
Atorvastatin Calcium
28
Lisinopril
28
Amlodipine Besylate
24
Simvastatin
24
Pantoprazole Sodium
23
Carvedilol
22
Furosemide
15

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Internal Medicine Physician Overview

How EZZADDIN AL WAHSH, M.D. fits within the Internal Medicine Physician landscape nationally.

172,858
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,716
Avg Claims per Provider

EZZADDIN AL WAHSH, M.D.'s 651 claims are below the specialty average of 2,716.

Nearby Internal Medicine Physician Providers in Arizona

Other clinicians with the same primary specialty enrolled in Arizona, drawn from the same CMS NPPES roster as AL WAHSH.

Compare Internal Medicine Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is EZZADDIN AL WAHSH, M.D.'s specialty?
EZZADDIN AL WAHSH, M.D. specializes in Internal Medicine Physician and practices in PARKER, Arizona. Credentials: M.D..
How much does EZZADDIN AL WAHSH, M.D. prescribe under Medicare Part D?
In 2023, EZZADDIN AL WAHSH, M.D. wrote 651 Medicare Part D claims totaling $62K in drug costs for 223 beneficiaries.
Where is EZZADDIN AL WAHSH, M.D. located?
EZZADDIN AL WAHSH, M.D. is located at 12033 AGENCY RD, PARKER, AZ, 85344. Phone: (928) 669-2137.
What is EZZADDIN AL WAHSH, M.D.'s NPI number?
EZZADDIN AL WAHSH, M.D.'s National Provider Identifier (NPI) is 1033525456, issued on 07/07/2014.
Does EZZADDIN AL WAHSH, M.D. prescribe more brand-name or generic drugs?
EZZADDIN AL WAHSH, M.D.'s prescribing is 12% brand-name and 88% generic drugs by claim count, with $52K in brand drug costs.
How many Internal Medicine Physician providers are there in the US?
There are 172,858 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,716 Medicare Part D claims per year.
What drugs does EZZADDIN AL WAHSH, M.D. prescribe most often?
Based on 2023 Medicare Part D data, EZZADDIN AL WAHSH, M.D.'s most frequently prescribed drugs include Losartan Potassium, Metoprolol Tartrate, Metoprolol Succinate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does EZZADDIN AL WAHSH, M.D. accept Medicare?
EZZADDIN AL WAHSH, M.D. appears in CMS Medicare data with 651 Part D claims and 223 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify EZZADDIN AL WAHSH, M.D.'s credentials?
EZZADDIN AL WAHSH, M.D.'s NPI is 1033525456 with credentials M.D.. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology