NPI registry status
Active
2026 NPPES data Orthopaedic Surgery Physician NPI 1922051051 MD
Verify on CMS → Gregory Grau, MD
Orthopaedic Surgery Physician in Winchester, Kentucky.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 26,109 in Orthopaedic Surgery 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
2K
Medicare Part D claims · 836 beneficiaries · Orthopaedic Surgery Physician avg: 344
Generic prescribing
96%
generic claims · 4% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
6.9/100
▼ 77 pts below national avg 83.5 · Penalty band
Industry payments
$1.9K
41 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Gregory Grau, MD reported a CMS MIPS final score of 6.9/100 - below the 83.5 national average - and filed 2,465 Medicare Part D claims in 2024.
- 6.9/100
- MIPS score · -77 vs avg
- 2K
- Part D claims, 2024
- 96%
- 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.
Federal trust snapshot
What official records show about Gregory Grau, MD
Federal records show an active NPI with both Medicare prescribing volume and a measured CMS quality score — objective registry data, not patient reviews.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1922051051), first enumerated 05/18/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 2,465 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
CMS quality reporting (MIPS)
Reported a CMS MIPS final score of 6.9/100 in the Quality Payment Program — a federal quality measure, not a patient review.
Source: CMS Quality Payment Program
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
3 CMS Care Compare hospital affiliations on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Reported
Industry payment transparency
$1.9K in reported industry payments (41 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1922051051 · Orthopaedic Surgery Physician
NPI-10 · ENUM-LEGACY · TAX-MID · MIPS-LOW · RX-MID · BOOK-THIN · PHOTO-FINISH
- NPI-10 1922051051
- ENUM-LEGACY 2006
- TAX-MID 26K Orthopaedic Surgery
- MIPS-LOW 6.9/100
- RX-MID 2,465
- BOOK-THIN 341 in Kentucky
- PHOTO-FINISH Brian Dickson · ±0.0
MIPS final-score neighbourhood
Same-specialty nationwide peers by CMS final score, not geographic proximity
- Rex Bryce · lowest
Rex Bryce
6.5 MIPS pts
- Harry Durgin · n…
Harry Durgin
6.7 MIPS pts
- Grau · this prov…
Grau · this provider
6.9 MIPS pts
- Brian Dickson · …
Brian Dickson
6.9 MIPS pts
- Ramon Soriano · …
Ramon Soriano
7 MIPS pts
What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).
Gregory Grau, MD's MIPS score vs every measured U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.
7 ≥ 2nd percentile 2% of 454,083 measured providers are in lower value bands
Each bar is a band; taller bars hold more measured 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.
The percentile is a conservative whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Gregory Grau, MD sits
This provider among orthopaedic surgery physician peers
Across the 7,229 orthopaedic surgery physician providers who report both Medicare Part D prescribing and a MIPS quality score, Gregory Grau, MD writes more Part D claims than 99% of them and scores higher on MIPS quality than 3% - placing this provider in the high-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Each dot is one orthopaedic surgery physician peer from a representative sample of 60; the gold marker is Gregory Grau, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Gregory Grau, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 3 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 Gregory Grau, MD?
Below national averagePrimary specialty
Orthopaedic Surgery Physician
Medicare Part D claims
2,465 7× vs specialty avg
MIPS final score
6.9/100 76.6 pts vs avg
Specialty distribution in Kentucky
How Orthopaedic Surgery Physician compares to other specialties among Kentucky providers
Medicare quality performance, MIPS
Gregory Grau, MD's 2023 MIPS final score plotted against the Orthopaedic Surgery Physician national average
- MIPS Final Score
- 6.9/100
- vs 83.5 national avg · 2023 performance year
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).
Practice Address
Provider Details
| NPI | 1922051051 |
|---|---|
| Specialty | Orthopaedic Surgery Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 05/18/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
6.867
Final Score
Measured-score avg: 83.5
0
Quality
22.89
Cost
Reporting: Individual
Hospital and facility affiliations
Facilities where Gregory Grau, 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.
According to CMS billing records, Gregory Grau, MD is affiliated with 3 Medicare-billing facilities.
H2 Rehabilitation Services OF Kentucky, LLC
Richmond, KY
Kentucky Orthopaedics And Spine PLLC
Richmond, KY
Kentucky Orthopedic Rehabilitation LLC
Richmond, KY
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Gregory Grau, MD. Source: openpaymentsdata.cms.gov.
Total received
$1.9K
Largest payer
Arthrex, Inc.
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
Brand vs generic prescribing mix · Generic-heavy
Gregory Grau, MD - brand share 4.0%
Orthopaedic Surgery Physician average
4% brand-name claims vs 96% generic, on 2,465 2024 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 2024.
2,465
Total Claims
$61K
Total Drug Cost
836
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,593.8
- Total Day Supply
- 48,628
- Brand vs Generic
- 4% brand / 96% generic
- Brand Drug Cost
- $37K
- Generic Drug Cost
- $24K
- Opioid Claims
- 997 (40.4% rate)
- Antibiotic Claims
- 83
Patient Demographics
- Average Patient Age
- 70.5 years
- Avg HCC Risk Score
- 1.35
- Gender Split
- 67% female / 33% male
- Age Distribution
- <65: 171, 65-74: 383, 75-84: 222, 85+: 60
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Gregory Grau, MD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Hydrocodone-Acetam…
Hydrocodone-Acetaminophen
485 claims
- Oxycodone-Acetamin…
Oxycodone-Acetaminophen
327 claims
- Diclofenac Sodium
Diclofenac Sodium
221 claims
- Meloxicam
Meloxicam
209 claims
- Celecoxib
Celecoxib
205 claims
- Methylprednisolone 172
Methylprednisolone
172 claims
- Ibuprofen 142
Ibuprofen
142 claims
- Tramadol Hcl 131
Tramadol Hcl
131 claims
| Drug | Claims |
|---|---|
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 485 |
| Oxycodone-Acetaminophen Oxycodone Hcl/Acetaminophen | 327 |
| Diclofenac Sodium | 221 |
| Meloxicam | 209 |
| Celecoxib | 205 |
| Methylprednisolone | 172 |
| Ibuprofen | 142 |
| Tramadol Hcl | 131 |
| Eliquis Apixaban | 96 |
| Gabapentin | 70 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Orthopaedic Surgery Physician Overview
How Gregory Grau, MD fits within the Orthopaedic Surgery Physician landscape nationally.
26,109
Orthopaedic Surgery Physician Providers in US
56
States with Orthopaedic Surgery Physician
344
Avg Claims per Provider
Gregory Grau, MD's 2,465 claims are above the specialty average of 344.
Nationwide Orthopaedic Surgery Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Grau, both outside Kentucky so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (6.9 here).
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Orthopaedic Surgery Physician Providers in Kentucky
Other clinicians with the same primary specialty enrolled in Kentucky, drawn from the same CMS NPPES roster as Grau.
One of 341 Orthopaedic Surgery Physician providers enrolled in Kentucky, 5 are shown here.
Dr. Moses Adebayo
MD
Pikeville, KY
Dr. Nicholas Ahn
MD
Louisville, KY
Dr. Gordon Air
MD
Edgewood, KY
Dr. George Aitken
MD
Ashland, KY
Dr. James Akin
MD
Prospect, KY
Compare Orthopaedic Surgery Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Gregory Grau, MD's specialty? ▼
Gregory Grau, MD specializes in Orthopaedic Surgery Physician and practices in Winchester, Kentucky. Credentials: MD.
How much does Gregory Grau, MD prescribe under Medicare Part D? ▼
In 2024, Gregory Grau, MD wrote 2,465 Medicare Part D claims totaling $61K in drug costs for 836 beneficiaries.
What is Gregory Grau, MD's Medicare quality score? ▼
Gregory Grau, MD has a CMS MIPS Final Score of 6.9/100 (Quality: 0, Cost: 22.9). The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Gregory Grau, MD located? ▼
Gregory Grau, MD is located at 404 SHOPPERS DR, Winchester, KY, 40391. Phone: (859) 737-5333.
What is Gregory Grau, MD's NPI number? ▼
Gregory Grau, MD's National Provider Identifier (NPI) is 1922051051, issued on 05/18/2006.
Does Gregory Grau, MD prescribe more brand-name or generic drugs? ▼
Gregory Grau, MD's prescribing is 4% brand-name and 96% generic drugs by claim count, with $37K in brand drug costs.
Does Gregory Grau, MD prescribe opioids? ▼
Yes, Gregory Grau, MD had 997 opioid claims in 2024 with an opioid prescribing rate of 40.4%.
How many Orthopaedic Surgery Physician providers are there in the US? ▼
There are 26,109 Orthopaedic Surgery Physician providers across 56 states in the US. The average Orthopaedic Surgery Physician provider writes 344 Medicare Part D claims per year.
What drugs does Gregory Grau, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, Gregory Grau, MD's most frequently prescribed drugs include Hydrocodone-Acetaminophen, Oxycodone-Acetaminophen, Diclofenac Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Gregory Grau, MD accept Medicare? ▼
Gregory Grau, MD appears in CMS Medicare data with 2,465 Part D claims and 836 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Gregory Grau, MD's credentials? ▼
Gregory Grau, MD's NPI is 1922051051 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 (2024). 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 August 2026 (NPPES) / 2024 (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
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.