NPI registry status
Active
2026 NPPES data Geriatric Medicine (Internal Medicine) Physician NPI 1881799179 MD
Verify on CMS → William Hardesty, MD
Geriatric Medicine (Internal Medicine) Physician in Evansville, Indiana.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 4,161 in Geriatric Medicine (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
6K
Medicare Part D claims · 325 beneficiaries · Geriatric Medicine (Internal Medicine) Physician avg: 4K
Generic prescribing
90%
generic claims · 10% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
79.5/100
▼ 4 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
William Hardesty, MD reported a CMS MIPS final score of 79.5/100 - below the 83.1 national average - and filed 5,767 Medicare Part D claims in 2023.
- 79.5/100
- MIPS score · -4 vs avg
- 6K
- Part D claims, 2023
- 90%
- 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.
William Hardesty, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
80 30th percentile higher than 30% 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 William Hardesty, MD sits
This provider among geriatric medicine (internal medicine) physician peers
Across the 724 geriatric medicine (internal medicine) physician providers who report both Medicare Part D prescribing and a MIPS quality score, William Hardesty, MD writes more Part D claims than 70% of them and scores higher on MIPS quality than 35% - placing this provider in the high-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 geriatric medicine (internal medicine) physician peer from a representative sample of 60; the gold marker is William Hardesty, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
William Hardesty, MD 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 William Hardesty, MD?
Near national averagePrimary specialty
Geriatric Medicine (Internal Medicine) Physician
Medicare Part D claims
5,767 30% vs specialty avg
MIPS final score
79.5/100 3.6 pts vs avg
Specialty distribution in Indiana
How Geriatric Medicine (Internal Medicine) Physician compares to other specialties among Indiana providers
Medicare quality performance, MIPS
William Hardesty, MD's 2023 MIPS final score plotted against the Geriatric Medicine (Internal Medicine) Physician national average
- MIPS Final Score
- 79.5/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Geriatric Medicine (Internal Medicine) Physician) - 79.5/100 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).
William Hardesty, MD appears in the CMS NPPES registry as a Geriatric Medicine (Internal Medicine) Physician provider holding MD credentials at 1750 OAK HILL RD, Evansville, IN, 47711, with a listed phone of (812) 485-2580. NPI 1881799179 was issued on 09/13/2006.
Medicare Part D records for calendar year 2023 show 5,767 prescription claims written by this provider, covering 325 Medicare beneficiaries and totaling roughly $296K in drug spend, split 10% brand-name and 90% generic by claim count, with an opioid prescribing rate of 4.1%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 79.5/100 for the 2023 performance year (Quality 78.2, Cost 50.9), compared with the national average of 83.1.
Geriatric Medicine (Internal Medicine) Physician is a narrow specialty nationwide, with 4,161 enrolled providers across 52 states and an average of 4,450 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 | 1881799179 |
|---|---|
| Specialty | Geriatric Medicine (Internal Medicine) Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 09/13/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
79.5254
Final Score
Avg: 83.1
78.1611
Quality
50.9082
Cost
100
Promoting Interoperability
Reporting: Group practice
Brand vs generic prescribing mix · Typical
William Hardesty, MD - brand share 10.0%
Geriatric Medicine (Internal Medicine) Physician average
10% brand-name claims vs 90% generic, on 5,767 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.
5,767
Total Claims
$296K
Total Drug Cost
325
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 10,712
- Total Day Supply
- 304,773
- Brand vs Generic
- 10% brand / 90% generic
- Brand Drug Cost
- $201K
- Generic Drug Cost
- $95K
- Opioid Claims
- 237 (4.1% rate)
- Antibiotic Claims
- 89
Patient Demographics
- Average Patient Age
- 83.2 years
- Avg HCC Risk Score
- 1.51
- Gender Split
- 71% female / 29% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What William Hardesty, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Levothyroxine Sodium
Levothyroxine Sodium
297 claims
- Amlodipine Besylate
Amlodipine Besylate
275 claims
- Furosemide
Furosemide
214 claims
- Gabapentin
Gabapentin
214 claims
- Atorvastatin Calcium
Atorvastatin Calcium
187 claims
- Lisinopril
Lisinopril
175 claims
- Metoprolol Succinate
Metoprolol Succinate
170 claims
- Omeprazole
Omeprazole
170 claims
| Drug | Claims |
|---|---|
| Levothyroxine Sodium | 297 |
| Amlodipine Besylate | 275 |
| Furosemide | 214 |
| Gabapentin | 214 |
| Atorvastatin Calcium | 187 |
| Lisinopril | 175 |
| Metoprolol Succinate | 170 |
| Omeprazole | 170 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 154 |
| Potassium Chloride | 141 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Geriatric Medicine (Internal Medicine) Physician in IN →
All providers in Indiana →
Compare specialties →
Geriatric Medicine (Internal Medicine) Physician Overview
How William Hardesty, MD fits within the Geriatric Medicine (Internal Medicine) Physician landscape nationally.
4,161
Geriatric Medicine (Internal Medicine) Physician Providers in US
52
States with Geriatric Medicine (Internal Medicine) Physician
4,450
Avg Claims per Provider
William Hardesty, MD's 5,767 claims are above the specialty average of 4,450.
Nearby Geriatric Medicine (Internal Medicine) Physician Providers in Indiana
Other clinicians with the same primary specialty enrolled in Indiana, drawn from the same CMS NPPES roster as Hardesty.
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 Indiana medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Geriatric Medicine (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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Frequently Asked Questions
What is William Hardesty, MD's specialty? ▼
William Hardesty, MD specializes in Geriatric Medicine (Internal Medicine) Physician and practices in Evansville, Indiana. Credentials: MD.
How much does William Hardesty, MD prescribe under Medicare Part D? ▼
In 2023, William Hardesty, MD wrote 5,767 Medicare Part D claims totaling $296K in drug costs for 325 beneficiaries.
What is William Hardesty, MD's Medicare quality score? ▼
William Hardesty, MD has a CMS MIPS Final Score of 79.5/100 (Quality: 78.2, Cost: 50.9). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is William Hardesty, MD located? ▼
William Hardesty, MD is located at 1750 OAK HILL RD, Evansville, IN, 47711. Phone: (812) 485-2580.
What is William Hardesty, MD's NPI number? ▼
William Hardesty, MD's National Provider Identifier (NPI) is 1881799179, issued on 09/13/2006.
Does William Hardesty, MD prescribe more brand-name or generic drugs? ▼
William Hardesty, MD's prescribing is 10% brand-name and 90% generic drugs by claim count, with $201K in brand drug costs.
Does William Hardesty, MD prescribe opioids? ▼
Yes, William Hardesty, MD had 237 opioid claims in 2023 with an opioid prescribing rate of 4.1%.
How many Geriatric Medicine (Internal Medicine) Physician providers are there in the US? ▼
There are 4,161 Geriatric Medicine (Internal Medicine) Physician providers across 52 states in the US. The average Geriatric Medicine (Internal Medicine) Physician provider writes 4,450 Medicare Part D claims per year.
What drugs does William Hardesty, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, William Hardesty, MD's most frequently prescribed drugs include Levothyroxine Sodium, Amlodipine Besylate, Furosemide. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does William Hardesty, MD accept Medicare? ▼
William Hardesty, MD appears in CMS Medicare data with 5,767 Part D claims and 325 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify William Hardesty, MD's credentials? ▼
William Hardesty, MD's NPI is 1881799179 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.