NPI registry status
Active
2026 NPPES data Internal Medicine Physician NPI 1659734366 MD
Verify on CMS → Maria McGreevy, MD
Internal Medicine Physician in Rochester, New York.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 172,858 in Internal Medicine 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
191
Medicare Part D claims · 55 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
87%
generic claims · 13% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
76.8/100
▼ 6 pts below national avg 83.1 · Above neutral
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
Maria McGreevy, MD reported a CMS MIPS final score of 76.8/100 - below the 83.1 national average - and filed 191 Medicare Part D claims in 2023.
- 76.8/100
- MIPS score · -6 vs avg
- 191
- Part D claims, 2023
- 87%
- 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.
Maria McGreevy, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
77 21st percentile higher than 21% 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 Maria McGreevy, MD sits
This provider among internal medicine physician peers
Across the 36,260 internal medicine physician providers who report both Medicare Part D prescribing and a MIPS quality score, Maria McGreevy, MD writes more Part D claims than 23% of them and scores higher on MIPS quality than 23% - placing this provider in the lower-volume, lower-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 internal medicine physician peer from a representative sample of 60; the gold marker is Maria McGreevy, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Maria McGreevy, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 2 hospital affiliations - 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 Maria McGreevy, MD?
Below national averagePrimary specialty
Internal Medicine Physician
Medicare Part D claims
191 93% vs specialty avg
MIPS final score
76.8/100 6.3 pts vs avg
Specialty distribution in New York
How Internal Medicine Physician compares to other specialties among New York providers
Medicare quality performance, MIPS
Maria McGreevy, MD's 2023 MIPS final score plotted against the Internal Medicine Physician national average
- MIPS Final Score
- 76.8/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Internal Medicine Physician) - 76.8/100 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).
Maria McGreevy, MD appears in the CMS NPPES registry as a Internal Medicine Physician provider holding MD credentials at 601 ELMWOOD AVE, Rochester, NY, 14642, with a listed phone of (585) 275-5863. NPI 1659734366 was issued on 03/30/2016.
Medicare Part D records for calendar year 2023 show 191 prescription claims written by this provider, covering 55 Medicare beneficiaries and totaling roughly $23K in drug spend, split 13% brand-name and 87% generic by claim count, with an opioid prescribing rate of 8.4%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 76.8/100 for the 2023 performance year (Quality 68.2, Cost 42.7), compared with the national average of 83.1.
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
Provider Details
| NPI | 1659734366 |
|---|---|
| Specialty | Internal Medicine Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 03/30/2016 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
76.8466
Final Score
Avg: 83.1
68.2024
Quality
42.684
Cost
100
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Maria McGreevy, 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.
Hematology Clinical Group
Rochester, NY
University OF Rochester
Rochester, NY
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
License & disciplinary context - New York NYSBPMC 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~100K New York medical licensees in 2023 - they are NOT specific to Maria McGreevy, MD. To verify Maria McGreevy, MD's current license status, search the NYSBPMC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
312
Total board actions, New York 2023
Across 302 cases
3.12
Actions per 1,000 licensees
New York statewide rate
probation
Most common action type
89 cases
NYSBPMC publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the New York disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Typical
Maria McGreevy, MD - brand share 13.0%
Internal Medicine Physician average
13% brand-name claims vs 87% generic, on 191 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.
191
Total Claims
$23K
Total Drug Cost
55
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 199
- Total Day Supply
- 3,022
- Brand vs Generic
- 13% brand / 87% generic
- Brand Drug Cost
- $20K
- Generic Drug Cost
- $3K
- Opioid Claims
- 16 (8.4% rate)
Patient Demographics
- Average Patient Age
- 74.0 years
- Avg HCC Risk Score
- 1.87
- Gender Split
- 53% female / 47% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Prochlorperazine Maleate | 48 |
| Ondansetron Hcl | 34 |
* 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 Maria McGreevy, 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
Maria McGreevy, MD's 191 claims are below the specialty average of 2,716.
Nearby Internal Medicine Physician Providers in New York
Other clinicians with the same primary specialty enrolled in New York, drawn from the same CMS NPPES roster as McGreevy.
Dr. Deborah Aanonsen
D.O.
Staten Island, NY
Dr. Nivedita Aanur
M.D.
New York, NY
Dr. Jay Aaron
MD
Great Neck, NY
Dr. Justin Aaron
MD
New York, NY
Ahmad Abadi
Poughkeepsie, NY
Compare Internal Medicine 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 New York medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Internal Medicine 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.
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Medical Specialties Explained
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Understanding Medicare Claims Data
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How insurance networks affect your costs
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Frequently Asked Questions
What is Maria McGreevy, MD's specialty? ▼
Maria McGreevy, MD specializes in Internal Medicine Physician and practices in Rochester, New York. Credentials: MD.
How much does Maria McGreevy, MD prescribe under Medicare Part D? ▼
In 2023, Maria McGreevy, MD wrote 191 Medicare Part D claims totaling $23K in drug costs for 55 beneficiaries.
What is Maria McGreevy, MD's Medicare quality score? ▼
Maria McGreevy, MD has a CMS MIPS Final Score of 76.8/100 (Quality: 68.2, Cost: 42.7). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Maria McGreevy, MD located? ▼
Maria McGreevy, MD is located at 601 ELMWOOD AVE, Rochester, NY, 14642. Phone: (585) 275-5863.
What is Maria McGreevy, MD's NPI number? ▼
Maria McGreevy, MD's National Provider Identifier (NPI) is 1659734366, issued on 03/30/2016.
Does Maria McGreevy, MD prescribe more brand-name or generic drugs? ▼
Maria McGreevy, MD's prescribing is 13% brand-name and 87% generic drugs by claim count, with $20K in brand drug costs.
Does Maria McGreevy, MD prescribe opioids? ▼
Yes, Maria McGreevy, MD had 16 opioid claims in 2023 with an opioid prescribing rate of 8.4%.
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 Maria McGreevy, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Maria McGreevy, MD's most frequently prescribed drugs include Prochlorperazine Maleate, Ondansetron Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Maria McGreevy, MD accept Medicare? ▼
Maria McGreevy, MD appears in CMS Medicare data with 191 Part D claims and 55 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Maria McGreevy, MD's credentials? ▼
Maria McGreevy, MD's NPI is 1659734366 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.