NPI registry status
Active
2026 NPPES data Radiation Oncology Physician NPI 1184011470 MD
Verify on CMS → Michael May, MD
Radiation Oncology Physician in Little Rock, Arkansas.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 6,018 in Radiation Oncology Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
214
Medicare Part D claims · 96 beneficiaries · Radiation Oncology Physician avg: 186
Generic prescribing
91%
generic claims · 9% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
100/100
▲ 17 pts above national avg 83.1 · Exceptional
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Michael May, MD reported a CMS MIPS final score of 100/100 - above the 83.1 national average - and filed 214 Medicare Part D claims in 2023.
- 100/100
- MIPS score · +17 vs avg
- 214
- Part D claims, 2023
- 91%
- 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 May, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
100 Top 7% higher than 93% of 477,587 scored providers
Each bar is a band; taller bars hold more scored providers. 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 Merit-based Incentive Payment System (MIPS) · 2023
Where Michael May, MD sits
This provider among radiation oncology physician peers
Across the 1,988 radiation oncology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Michael May, MD writes more Part D claims than 81% of them and scores higher on MIPS quality than 92% - placing this provider in the high-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one radiation oncology physician peer from a representative sample of 60; the gold marker is Michael May, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Michael May, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 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 May, MD?
High performer (top quartile)Primary specialty
Radiation Oncology Physician
Medicare Part D claims
214 15% vs specialty avg
MIPS final score
100/100 16.9 pts vs avg
Specialty distribution in Arkansas
How Radiation Oncology Physician compares to other specialties among Arkansas providers
Medicare quality performance, MIPS
Michael May, MD's 2023 MIPS final score plotted against the Radiation Oncology Physician national average
- MIPS Final Score
- 100/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Radiation Oncology Physician) - 100/100 vs national avg 83.1
How MIPS and board certification work
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 May, MD appears in the CMS NPPES registry as a Radiation Oncology Physician provider holding MD credentials at 8901 CARTI WAY STE 400, Little Rock, AR, 72205, with a listed phone of (501) 906-3000. NPI 1184011470 was issued on 04/24/2015.
Medicare Part D records for calendar year 2023 show 214 prescription claims written by this provider, covering 96 Medicare beneficiaries and totaling roughly $6K in drug spend, split 9% brand-name and 91% generic by claim count, with an opioid prescribing rate of 6.1%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 100/100 for the 2023 performance year (Quality 95.9), compared with the national average of 83.1.
Radiation Oncology Physician is a mid-sized specialty nationwide, with 6,018 enrolled providers across 52 states and an average of 186 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
Provider Details
| NPI | 1184011470 |
|---|---|
| Specialty | Radiation Oncology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 04/24/2015 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
100
Final Score
Avg: 83.1
95.9223
Quality
Reporting: Individual
Hospital and facility affiliations
Facilities where Michael May, 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.
Carti Oncology Solutions LLC
Little Rock, AR
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 · Generic-heavy
Michael May, MD - brand share 9.0%
Radiation Oncology Physician average
9% brand-name claims vs 91% generic, on 214 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.
214
Total Claims
$6K
Total Drug Cost
96
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 221
- Total Day Supply
- 3,882
- Brand vs Generic
- 9% brand / 91% generic
- Brand Drug Cost
- $1K
- Generic Drug Cost
- $4K
- Opioid Claims
- 13 (6.1% rate)
Patient Demographics
- Average Patient Age
- 70.7 years
- Avg HCC Risk Score
- 1.94
- Gender Split
- 65% female / 35% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Michael May, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Mometasone Furoate
Mometasone Furoate
67 claims
- Sucralfate 26
Sucralfate
26 claims
- Dexamethasone 19
Dexamethasone
19 claims
- Memantine Hcl 15
Memantine Hcl
15 claims
- Lidocaine Hcl Visc… 12
Lidocaine Hcl Viscous
12 claims
- Methylprednisolone 12
Methylprednisolone
12 claims
| Drug | Claims |
|---|---|
| Mometasone Furoate | 67 |
| Sucralfate | 26 |
| Dexamethasone | 19 |
| Memantine Hcl | 15 |
| Lidocaine Hcl Viscous Lidocaine Hcl | 12 |
| Methylprednisolone | 12 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Radiation Oncology Physician Overview
How Michael May, MD fits within the Radiation Oncology Physician landscape nationally.
6,018
Radiation Oncology Physician Providers in US
52
States with Radiation Oncology Physician
186
Avg Claims per Provider
Michael May, MD's 214 claims are above the specialty average of 186.
Nearby Radiation Oncology Physician Providers in Arkansas
Other clinicians with the same primary specialty enrolled in Arkansas, drawn from the same CMS NPPES roster as May.
Dr. Edward Abraham
M.D.
Hot Springs, AR
Dr. Scarlett Acklin-Wehnert
MD
Fayetteville, AR
Dr. Sondos Alkhatib
MD
Little Rock, AR
Dr. John Allgood
M.D.
Jonesboro, AR
Dr. Joshua Anderson
MD
Fayetteville, AR
Compare Radiation Oncology Physician nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Arkansas medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Radiation Oncology Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
Healthcare Guides
Learn more about finding, verifying, and understanding healthcare providers.
How to Find a Doctor
Step-by-step guide to choosing a provider
Verify Credentials
Check NPI, board certification & license status
Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore Arkansas
Frequently Asked Questions
What is Michael May, MD's specialty? ▼
Michael May, MD specializes in Radiation Oncology Physician and practices in Little Rock, Arkansas. Credentials: MD.
How much does Michael May, MD prescribe under Medicare Part D? ▼
In 2023, Michael May, MD wrote 214 Medicare Part D claims totaling $6K in drug costs for 96 beneficiaries.
What is Michael May, MD's Medicare quality score? ▼
Michael May, MD has a CMS MIPS Final Score of 100/100 (Quality: 95.9). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Michael May, MD located? ▼
Michael May, MD is located at 8901 CARTI WAY STE 400, Little Rock, AR, 72205. Phone: (501) 906-3000.
What is Michael May, MD's NPI number? ▼
Michael May, MD's National Provider Identifier (NPI) is 1184011470, issued on 04/24/2015.
Does Michael May, MD prescribe more brand-name or generic drugs? ▼
Michael May, MD's prescribing is 9% brand-name and 91% generic drugs by claim count, with $1K in brand drug costs.
Does Michael May, MD prescribe opioids? ▼
Yes, Michael May, MD had 13 opioid claims in 2023 with an opioid prescribing rate of 6.1%.
How many Radiation Oncology Physician providers are there in the US? ▼
There are 6,018 Radiation Oncology Physician providers across 52 states in the US. The average Radiation Oncology Physician provider writes 186 Medicare Part D claims per year.
What drugs does Michael May, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Michael May, MD's most frequently prescribed drugs include Mometasone Furoate, Sucralfate, Dexamethasone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Michael May, MD accept Medicare? ▼
Michael May, MD appears in CMS Medicare data with 214 Part D claims and 96 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Michael May, MD's credentials? ▼
Michael May, MD's NPI is 1184011470 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
View source datasets and methodology notes
- 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.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- 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
Compiled from official public sources by the PlainDoctor editorial team.