Gregory Hardin, M.D.
Hospitalist Physician in Louisville, 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 16,825 in Hospitalist 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.
What the federal data shows
Gregory Hardin, M.D. reported a CMS MIPS final score of 100/100 - above the 83.1 national average - and filed 438 Medicare Part D claims in 2023.
- 100/100
- MIPS score · +17 vs avg
- 438
- Part D claims, 2023
- 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.
Gregory Hardin, M.D.'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 Gregory Hardin, M.D. sits
This provider among hospitalist physician peers
Across the 4,437 hospitalist physician providers who report both Medicare Part D prescribing and a MIPS quality score, Gregory Hardin, M.D. writes more Part D claims than 73% of them and scores higher on MIPS quality than 95% - 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 hospitalist physician peer from a representative sample of 60; the gold marker is Gregory Hardin, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
Gregory Hardin, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting - 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 Hardin, M.D.?
High performer (top quartile)Primary specialty
Medicare Part D claims
MIPS final score
Specialty distribution in Kentucky
How Hospitalist Physician compares to other specialties among Kentucky providers
Hospitalist Physician ranks #65 among Kentucky's specialties (0.2% of in-state providers)
Each bar is a specialty's share of the Kentucky provider total, by primary NUCC taxonomy. The highlighted bar is Hospitalist Physician; the long tail of smaller specialties is omitted for legibility.
Medicare quality performance, MIPS
Gregory Hardin, M.D.'s 2023 MIPS final score plotted against the Hospitalist Physician national average
- MIPS Final Score
- 100/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Hospitalist Physician) - 100/100 vs national avg 83.1
Quality benchmarks
- National MIPS avg 2023 reporting year
- Quality dim CMS Quality category
- Specialty volume Hospitalist Physician US NPIs
100/100 MIPS final score - 16.9 pts above the 83.1 national average
Quality, Cost, Promoting Interoperability, and Improvement Activities composite score for the 2023 performance year. Specialty: Hospitalist Physician. Quality dim: 86.8.
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).
Gregory Hardin, M.D. appears in the CMS NPPES registry as a Hospitalist Physician provider holding M.D. credentials at 312 S 4TH ST STE 700, Louisville, KY, 40202, with a listed phone of (502) 804-5495. NPI 1457677213 was issued on 04/19/2010. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Hardin 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 438 prescription claims written by this provider, covering 147 Medicare beneficiaries and totaling roughly $35K in drug spend. 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. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 100/100 for the 2023 performance year (Quality 86.8), compared with the national average of 83.1.
Hospitalist Physician is a mid-sized specialty nationwide, with 16,825 enrolled providers across 54 states and an average of 888 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 | 1457677213 |
|---|---|
| Specialty | Hospitalist Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 04/19/2010 |
Verify this provider's license
PlainDoctor pulls this profile from the CMS NPPES public registry. Confirm Gregory Hardin, M.D.'s current license status, disciplinary history, and board certifications with the Kentucky Board of Medical Licensure in Kentucky before relying on this page for a clinical or care decision.
How we sourced this profile
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
Reporting: Alternative Payment Model
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 Hardin, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$26
Largest payer
Penumbra, 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.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
Prescribing Breakdown
- 30-Day Fills
- 775
- Total Day Supply
- 20,861
- Generic Drug Cost
- $9K
- Antibiotic Claims
- 40
Patient Demographics
- Average Patient Age
- 75.5 years
- Avg HCC Risk Score
- 2.37
- Gender Split
- 52% female / 48% male
- Age Distribution
- <65: 20, 65-74: 42, 75-84: 56, 85+: 29
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Gregory Hardin, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Amlodipine Besylate
Amlodipine Besylate
29 claims
- Pantoprazole Sodium
Pantoprazole Sodium
28 claims
- Atorvastatin Calcium
Atorvastatin Calcium
20 claims
- Metoprolol Succinate
Metoprolol Succinate
18 claims
- Furosemide
Furosemide
15 claims
- Torsemide
Torsemide
14 claims
- Amoxicillin-Clavul…
Amoxicillin-Clavulanate Potass
13 claims
- Clopidogrel
Clopidogrel
13 claims
| Drug | Claims |
|---|---|
| Amlodipine Besylate | 29 |
| Pantoprazole Sodium | 28 |
| Atorvastatin Calcium | 20 |
| Metoprolol Succinate | 18 |
| Furosemide | 15 |
| Torsemide | 14 |
| Amoxicillin-Clavulanate Potass Amoxicillin/Potassium Clav | 13 |
| Clopidogrel Clopidogrel Bisulfate | 13 |
| Carvedilol | 11 |
| Prednisone | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Hospitalist Physician Overview
How Gregory Hardin, M.D. fits within the Hospitalist Physician landscape nationally.
Gregory Hardin, M.D.'s 438 claims are below the specialty average of 888.
Nearby Hospitalist Physician Providers in Kentucky
Other clinicians with the same primary specialty enrolled in Kentucky, drawn from the same CMS NPPES roster as Hardin.
Compare Hospitalist 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 Kentucky medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Hospitalist 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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Frequently Asked Questions
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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.
- 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