2026 NPPES data Internal Medicine Physician NPI 1235199639 MD
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MICHAEL AMOA-ASARE, MD

Internal Medicine Physician in CHANDLER, 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
249
Medicare Part D claims · 123 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
85%
generic claims · 15% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

MICHAEL AMOA-ASARE, MD filed 249 Medicare Part D claims in 2023 as a Internal Medicine Physician in CHANDLER, Arizona, prescribing 85% generic.

249
Part D claims, 2023
85%
generic prescribing
Likely
board-certified (heuristic)

Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) — no proprietary rating or editorial opinion is applied.

MICHAEL AMOA-ASARE, MD's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

249 49th percentile higher than 49% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). This entry sits in this band. 400–600: 90,619 prescribers (7%). Above this entry. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source CMS Medicare Part D Prescriber Public Use File · 2023

Board certification likely (heuristic — not verified)

MICHAEL AMOA-ASARE, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about MICHAEL AMOA-ASARE, MD?

Quality data not reported

NPI registry status

Active

Issued 03/28/2006

NPI 1235199639

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

249 91% 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).

MICHAEL AMOA-ASARE, MD appears in the CMS NPPES registry as a Internal Medicine Physician provider holding MD credentials at 485 S DODSON ROAD, CHANDLER, AZ, 85224, with a listed phone of (480) 203-4028. NPI 1235199639 was issued on 03/28/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what AMOA-ASARE 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 249 prescription claims written by this provider, covering 123 Medicare beneficiaries and totaling roughly $116K in drug spend, split 15% brand-name and 85% 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

485 S DODSON ROAD
CHANDLER, AZ 85224

Provider Details

NPI 1235199639
Specialty Internal Medicine Physician
Credentials MD
Gender Male
NPI Issued 03/28/2006

Hospital and facility affiliations

Facilities where MICHAEL AMOA-ASARE, MD 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.

SJHMC PHYSICIAN SERVICES
CHANDLER, AZ

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

MICHAEL AMOA-ASARE, MD — brand share 15.0%
Specialty average (est.)

15% brand-name claims vs 85% generic, on 249 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.

249
Total Claims
$116K
Total Drug Cost
123
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
251
Total Day Supply
2,857
Brand vs Generic
15% brand / 85% generic
Brand Drug Cost
$100K
Generic Drug Cost
$16K
Antibiotic Claims
194

Patient Demographics

Average Patient Age
73.2 years
Avg HCC Risk Score
2.96
Gender Split
47% female / 53% male
Age Distribution
<65: 21, 65-74: 45, 75-84: 36, 85+: 21

Top Prescribed Drugs (Medicare Part D)

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

What MICHAEL AMOA-ASARE, MD prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Doxycycline Hyclate
20
Ampicillin-Sulbactam
Ampicillin Sod/Sulbactam Sod
19
Cefuroxime
Cefuroxime Axetil
19
Vancomycin Hcl
18
Cefdinir
15
Metronidazole
15
Ciprofloxacin Hcl
14
Amoxicillin
13
Tivicay
Dolutegravir Sodium
12

* 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 MICHAEL AMOA-ASARE, MD 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

MICHAEL AMOA-ASARE, MD's 249 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 AMOA-ASARE.

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

Frequently Asked Questions

What is MICHAEL AMOA-ASARE, MD's specialty?
MICHAEL AMOA-ASARE, MD specializes in Internal Medicine Physician and practices in CHANDLER, Arizona. Credentials: MD.
How much does MICHAEL AMOA-ASARE, MD prescribe under Medicare Part D?
In 2023, MICHAEL AMOA-ASARE, MD wrote 249 Medicare Part D claims totaling $116K in drug costs for 123 beneficiaries.
Where is MICHAEL AMOA-ASARE, MD located?
MICHAEL AMOA-ASARE, MD is located at 485 S DODSON ROAD, CHANDLER, AZ, 85224. Phone: (480) 203-4028.
What is MICHAEL AMOA-ASARE, MD's NPI number?
MICHAEL AMOA-ASARE, MD's National Provider Identifier (NPI) is 1235199639, issued on 03/28/2006.
Does MICHAEL AMOA-ASARE, MD prescribe more brand-name or generic drugs?
MICHAEL AMOA-ASARE, MD's prescribing is 15% brand-name and 85% generic drugs by claim count, with $100K 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 MICHAEL AMOA-ASARE, MD prescribe most often?
Based on 2023 Medicare Part D data, MICHAEL AMOA-ASARE, MD's most frequently prescribed drugs include Doxycycline Hyclate, Ampicillin-Sulbactam, Cefuroxime. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does MICHAEL AMOA-ASARE, MD accept Medicare?
MICHAEL AMOA-ASARE, MD appears in CMS Medicare data with 249 Part D claims and 123 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify MICHAEL AMOA-ASARE, MD's credentials?
MICHAEL AMOA-ASARE, MD's NPI is 1235199639 with credentials MD. 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