NPI registry status
Active
2026 NPPES data Clinical Neurophysiology Physician NPI 1902853617 MD
Verify on CMS → Warren Chumley, MD
Clinical Neurophysiology Physician in Lexington, 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 639 in Clinical Neurophysiology 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 · 461 beneficiaries · Clinical Neurophysiology Physician avg: 2K
Generic prescribing
85%
generic claims · 14% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$19.7K
157 payments · CMS Open Payments (Sunshine Act)
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
Warren Chumley, MD filed 5,934 Medicare Part D claims in 2023 as a Clinical Neurophysiology Physician in Lexington, Kentucky, prescribing 85% generic.
- 6K
- Part D claims, 2023
- 85%
- 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.
Warren Chumley, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
5,934 Top 5% higher than 95% of 1,370,886 prescribers
Each bar is a band; taller bars hold more prescribers. 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 Medicare Part D Prescriber Public Use File · 2023
✓
Board certification likely (heuristic, not verified)
Warren Chumley, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 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 Warren Chumley, MD?
Quality data not reportedPrimary specialty
Clinical Neurophysiology Physician
Medicare Part D claims
5,934 290% vs specialty avg
Specialty distribution in Kentucky
How Clinical Neurophysiology Physician compares to other specialties among Kentucky providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Clinical Neurophysiology Physician. Verify directly:
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).
Warren Chumley, MD appears in the CMS NPPES registry as a Clinical Neurophysiology Physician provider holding MD credentials at 1021 MAJESTIC DRIVE, Lexington, KY, 40513, with a listed phone of (859) 296-1922. NPI 1902853617 was issued on 05/28/2006.
Medicare Part D records for calendar year 2023 show 5,934 prescription claims written by this provider, covering 461 Medicare beneficiaries and totaling roughly $3.1 million in drug spend, split 14% brand-name and 85% generic by claim count, with an opioid prescribing rate of 5.3%.
Clinical Neurophysiology Physician is a narrow specialty nationwide, with 639 enrolled providers across 50 states and an average of 1,523 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 | 1902853617 |
|---|---|
| Specialty | Clinical Neurophysiology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 05/28/2006 |
Hospital and facility affiliations
Facilities where Warren Chumley, 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.
Kentuckyone Health Medical Group Inc
Lexington, KY
PT Pros, Inc
Williamsburg, 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 Warren Chumley, MD. Source: openpaymentsdata.cms.gov.
Total received
$19.7K
Largest payer
ABBVIE 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 · Typical
Warren Chumley, MD - brand share 14.0%
Clinical Neurophysiology Physician average
14% brand-name claims vs 85% generic, on 5,934 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.
5,934
Total Claims
$3.1M
Total Drug Cost
461
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 9,856
- Total Day Supply
- 282,501
- Brand vs Generic
- 14% brand / 85% generic
- Brand Drug Cost
- $2.7M
- Generic Drug Cost
- $390K
- Opioid Claims
- 317 (5.3% rate)
Patient Demographics
- Average Patient Age
- 66.1 years
- Avg HCC Risk Score
- 1.47
- Gender Split
- 66% female / 34% male
- Age Distribution
- <65: 167, 65-74: 171, 75-84: 102, 85+: 21
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Warren Chumley, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Gabapentin
Gabapentin
462 claims
- Topiramate
Topiramate
289 claims
- Hydrocodone-Acetam…
Hydrocodone-Acetaminophen
216 claims
- Levetiracetam 170
Levetiracetam
170 claims
- Memantine Hcl 166
Memantine Hcl
166 claims
- Clonazepam 165
Clonazepam
165 claims
- Pregabalin 163
Pregabalin
163 claims
- Duloxetine Hcl 157
Duloxetine Hcl
157 claims
| Drug | Claims |
|---|---|
| Gabapentin | 462 |
| Topiramate | 289 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 216 |
| Levetiracetam | 170 |
| Memantine Hcl | 166 |
| Clonazepam | 165 |
| Pregabalin | 163 |
| Duloxetine Hcl | 157 |
| Tizanidine Hcl | 139 |
| Butalbital-Acetaminophen-Caffe Butalb/Acetaminophen/Caffeine | 136 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Clinical Neurophysiology Physician Overview
How Warren Chumley, MD fits within the Clinical Neurophysiology Physician landscape nationally.
639
Clinical Neurophysiology Physician Providers in US
50
States with Clinical Neurophysiology Physician
1,523
Avg Claims per Provider
Warren Chumley, MD's 5,934 claims are above the specialty average of 1,523.
Nearby Clinical Neurophysiology Physician Providers in Kentucky
Other clinicians with the same primary specialty enrolled in Kentucky, drawn from the same CMS NPPES roster as Chumley.
Dr. Greg Anderson
MD
Lexington, KY
Dr. Ty Brown
MD
Crestview Hills, KY
Dr. Ima Ebong
MD
Lexington, KY
Dr. Vasudeva Iyer
M.D.
Louisville, KY
Dr. Arpita Lakhotia
MD
Owensboro, KY
Compare Clinical Neurophysiology 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 Clinical Neurophysiology 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 Warren Chumley, MD's specialty? ▼
Warren Chumley, MD specializes in Clinical Neurophysiology Physician and practices in Lexington, Kentucky. Credentials: MD.
How much does Warren Chumley, MD prescribe under Medicare Part D? ▼
In 2023, Warren Chumley, MD wrote 5,934 Medicare Part D claims totaling $3.1M in drug costs for 461 beneficiaries.
Where is Warren Chumley, MD located? ▼
Warren Chumley, MD is located at 1021 MAJESTIC DRIVE, Lexington, KY, 40513. Phone: (859) 296-1922.
What is Warren Chumley, MD's NPI number? ▼
Warren Chumley, MD's National Provider Identifier (NPI) is 1902853617, issued on 05/28/2006.
Does Warren Chumley, MD prescribe more brand-name or generic drugs? ▼
Warren Chumley, MD's prescribing is 14% brand-name and 85% generic drugs by claim count, with $2.7M in brand drug costs.
Does Warren Chumley, MD prescribe opioids? ▼
Yes, Warren Chumley, MD had 317 opioid claims in 2023 with an opioid prescribing rate of 5.3%.
How many Clinical Neurophysiology Physician providers are there in the US? ▼
There are 639 Clinical Neurophysiology Physician providers across 50 states in the US. The average Clinical Neurophysiology Physician provider writes 1,523 Medicare Part D claims per year.
What drugs does Warren Chumley, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Warren Chumley, MD's most frequently prescribed drugs include Gabapentin, Topiramate, Hydrocodone-Acetaminophen. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Warren Chumley, MD accept Medicare? ▼
Warren Chumley, MD appears in CMS Medicare data with 5,934 Part D claims and 461 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Warren Chumley, MD's credentials? ▼
Warren Chumley, MD's NPI is 1902853617 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.
- 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.