NPI registry status
Active
2026 NPPES data Pain Medicine (Physical Medicine & Rehabilitation) Physician NPI 1164486155 MD
Verify on CMS → Gregory Billy, MD
Pain Medicine (Physical Medicine & Rehabilitation) Physician in State College, Pennsylvania.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 1,630 in Pain Medicine (Physical Medicine & Rehabilitation) 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
1K
Medicare Part D claims · 179 beneficiaries · Pain Medicine (Physical Medicine & Rehabilitation) Physician avg: 1K
Generic prescribing
96%
generic claims · 4% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
71.8/100
▼ 11 pts below national avg 83.1 · Mid-tier
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
Gregory Billy, MD reported a CMS MIPS final score of 71.8/100 - below the 83.1 national average - and filed 1,050 Medicare Part D claims in 2023.
- 71.8/100
- MIPS score · -11 vs avg
- 1K
- Part D claims, 2023
- 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.
Gregory Billy, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
72 9th percentile higher than 9% 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 Billy, MD sits
This provider among pain medicine (physical medicine & rehabilitation) physician peers
Across the 526 pain medicine (physical medicine & rehabilitation) physician providers who report both Medicare Part D prescribing and a MIPS quality score, Gregory Billy, MD writes more Part D claims than 57% of them and scores higher on MIPS quality than 25% - 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 pain medicine (physical medicine & rehabilitation) physician peer from a representative sample of 60; the gold marker is Gregory Billy, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Gregory Billy, 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 Gregory Billy, MD?
Below national averagePrimary specialty
Pain Medicine (Physical Medicine & Rehabilitation) Physician
Medicare Part D claims
1,050 25% vs specialty avg
MIPS final score
71.8/100 11.3 pts vs avg
Specialty distribution in Pennsylvania
How Pain Medicine (Physical Medicine & Rehabilitation) Physician compares to other specialties among Pennsylvania providers
Medicare quality performance, MIPS
Gregory Billy, MD's 2023 MIPS final score plotted against the Pain Medicine (Physical Medicine & Rehabilitation) Physician national average
- MIPS Final Score
- 71.8/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Pain Medicine (Physical Medicine & Rehabilitation) Physician) - 71.8/100 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).
Gregory Billy, MD appears in the CMS NPPES registry as a Pain Medicine (Physical Medicine & Rehabilitation) Physician provider holding MD credentials at 143 HOSPITAL DRIVE, State College, PA, 16803, with a listed phone of (800) 233-4082. NPI 1164486155 was issued on 04/14/2006.
Medicare Part D records for calendar year 2023 show 1,050 prescription claims written by this provider, covering 179 Medicare beneficiaries and totaling roughly $72K in drug spend, split 4% brand-name and 96% generic by claim count, with an opioid prescribing rate of 4.7%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 71.8/100 for the 2023 performance year (Quality 48.3, Cost 57.6), compared with the national average of 83.1.
Pain Medicine (Physical Medicine & Rehabilitation) Physician is a narrow specialty nationwide, with 1,630 enrolled providers across 50 states and an average of 1,401 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 | 1164486155 |
|---|---|
| Specialty | Pain Medicine (Physical Medicine & Rehabilitation) Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 04/14/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
71.7884
Final Score
Avg: 83.1
48.3237
Quality
57.6377
Cost
100
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Gregory Billy, 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.
The Milton S Hershey Medical Center Physicians Group
Hershey, PA
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 - Pennsylvania PA-BOM 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 ~45K Pennsylvania medical licensees in 2023 - they are NOT specific to Gregory Billy, MD. To verify Gregory Billy, MD's current license status, search the PA-BOM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
133
Total board actions, Pennsylvania 2023
Across 129 cases
2.96
Actions per 1,000 licensees
Pennsylvania statewide rate
probation
Most common action type
48 cases
PA-BOM 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 Pennsylvania disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Generic-heavy
Gregory Billy, MD - brand share 4.0%
Pain Medicine (Physical Medicine & Rehabilitation) Physician average
4% brand-name claims vs 96% generic, on 1,050 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.
1,050
Total Claims
$72K
Total Drug Cost
179
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,419
- Total Day Supply
- 40,448
- Brand vs Generic
- 4% brand / 96% generic
- Brand Drug Cost
- $45K
- Generic Drug Cost
- $27K
- Opioid Claims
- 49 (4.7% rate)
Patient Demographics
- Average Patient Age
- 69.5 years
- Avg HCC Risk Score
- 1.28
- Gender Split
- 64% female / 36% male
- Age Distribution
- <65: 41, 65-74: 77, 75-84: 44, 85+: 17
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Gregory Billy, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Gabapentin
Gabapentin
526 claims
- Methocarbamol 100
Methocarbamol
100 claims
- Baclofen 58
Baclofen
58 claims
- Amitriptyline Hcl 57
Amitriptyline Hcl
57 claims
- Cyclobenzaprine Hcl 38
Cyclobenzaprine Hcl
38 claims
- Diclofenac Sodium 38
Diclofenac Sodium
38 claims
- Botox 27
Botox
27 claims
- Diazepam 25
Diazepam
25 claims
| Drug | Claims |
|---|---|
| Gabapentin | 526 |
| Methocarbamol | 100 |
| Baclofen | 58 |
| Amitriptyline Hcl | 57 |
| Cyclobenzaprine Hcl | 38 |
| Diclofenac Sodium | 38 |
| Botox Onabotulinumtoxina | 27 |
| Diazepam | 25 |
| Duloxetine Hcl | 25 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 21 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Pain Medicine (Physical Medicine & Rehabilitation) Physician in PA →
All providers in Pennsylvania →
Compare specialties →
Pain Medicine (Physical Medicine & Rehabilitation) Physician Overview
How Gregory Billy, MD fits within the Pain Medicine (Physical Medicine & Rehabilitation) Physician landscape nationally.
1,630
Pain Medicine (Physical Medicine & Rehabilitation) Physician Providers in US
50
States with Pain Medicine (Physical Medicine & Rehabilitation) Physician
1,401
Avg Claims per Provider
Gregory Billy, MD's 1,050 claims are below the specialty average of 1,401.
Nearby Pain Medicine (Physical Medicine & Rehabilitation) Physician Providers in Pennsylvania
Other clinicians with the same primary specialty enrolled in Pennsylvania, drawn from the same CMS NPPES roster as Billy.
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 Pennsylvania medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Pain Medicine (Physical Medicine & Rehabilitation) 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 Gregory Billy, MD's specialty? ▼
Gregory Billy, MD specializes in Pain Medicine (Physical Medicine & Rehabilitation) Physician and practices in State College, Pennsylvania. Credentials: MD.
How much does Gregory Billy, MD prescribe under Medicare Part D? ▼
In 2023, Gregory Billy, MD wrote 1,050 Medicare Part D claims totaling $72K in drug costs for 179 beneficiaries.
What is Gregory Billy, MD's Medicare quality score? ▼
Gregory Billy, MD has a CMS MIPS Final Score of 71.8/100 (Quality: 48.3, Cost: 57.6). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Gregory Billy, MD located? ▼
Gregory Billy, MD is located at 143 HOSPITAL DRIVE, State College, PA, 16803. Phone: (800) 233-4082.
What is Gregory Billy, MD's NPI number? ▼
Gregory Billy, MD's National Provider Identifier (NPI) is 1164486155, issued on 04/14/2006.
Does Gregory Billy, MD prescribe more brand-name or generic drugs? ▼
Gregory Billy, MD's prescribing is 4% brand-name and 96% generic drugs by claim count, with $45K in brand drug costs.
Does Gregory Billy, MD prescribe opioids? ▼
Yes, Gregory Billy, MD had 49 opioid claims in 2023 with an opioid prescribing rate of 4.7%.
How many Pain Medicine (Physical Medicine & Rehabilitation) Physician providers are there in the US? ▼
There are 1,630 Pain Medicine (Physical Medicine & Rehabilitation) Physician providers across 50 states in the US. The average Pain Medicine (Physical Medicine & Rehabilitation) Physician provider writes 1,401 Medicare Part D claims per year.
What drugs does Gregory Billy, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Gregory Billy, MD's most frequently prescribed drugs include Gabapentin, Methocarbamol, Baclofen. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Gregory Billy, MD accept Medicare? ▼
Gregory Billy, MD appears in CMS Medicare data with 1,050 Part D claims and 179 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Gregory Billy, MD's credentials? ▼
Gregory Billy, MD's NPI is 1164486155 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.
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 May 2026.