NPI registry status
Active
2026 NPPES data Anesthesiology Physician NPI 1952398687 M.D.
Verify on CMS → Brent Walker, M.D.
Anesthesiology Physician in Little Rock, Arkansas.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 56,432 in Anesthesiology 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 · 388 beneficiaries · Anesthesiology Physician avg: 860
Generic prescribing
99%
generic claims · 1% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
82.6/100
▼ 0 pts below national avg 83.1 · Above neutral
Industry payments
$1.5K
10 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
Brent Walker, M.D. reported a CMS MIPS final score of 82.6/100 - below the 83.1 national average - and filed 2,259 Medicare Part D claims in 2023.
- 82.6/100
- MIPS score · 0 vs avg
- 2K
- Part D claims, 2023
- 99%
- 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.
Brent Walker, 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
83 39th percentile higher than 39% 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 Brent Walker, M.D. sits
This provider among anesthesiology physician peers
Across the 1,666 anesthesiology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Brent Walker, M.D. writes more Part D claims than 77% of them and scores higher on MIPS quality than 53% - 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 anesthesiology physician peer from a representative sample of 60; the gold marker is Brent Walker, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Brent Walker, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 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 Brent Walker, M.D.?
Near national averagePrimary specialty
Anesthesiology Physician
Medicare Part D claims
2,259 163% vs specialty avg
MIPS final score
82.6/100 0.5 pts vs avg
Specialty distribution in Arkansas
How Anesthesiology Physician compares to other specialties among Arkansas providers
Medicare quality performance, MIPS
Brent Walker, M.D.'s 2023 MIPS final score plotted against the Anesthesiology Physician national average
- MIPS Final Score
- 82.6/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Anesthesiology Physician) - 82.6/100 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).
Brent Walker, M.D. appears in the CMS NPPES registry as an Anesthesiology Physician provider holding M.D. credentials at 800 FAIR PARK BLVD, Little Rock, AR, 72204, with a listed phone of (501) 500-3500. NPI 1952398687 was issued on 09/27/2005.
Medicare Part D records for calendar year 2023 show 2,259 prescription claims written by this provider, covering 388 Medicare beneficiaries and totaling roughly $48K in drug spend, split 1% brand-name and 99% generic by claim count, with an opioid prescribing rate of 52.0%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 82.6/100 for the 2023 performance year (Quality 68.5), compared with the national average of 83.1.
Anesthesiology Physician is a high-volume specialty nationwide, with 56,432 enrolled providers across 56 states and an average of 860 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 | 1952398687 |
|---|---|
| Specialty | Anesthesiology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 09/27/2005 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
82.6497
Final Score
Avg: 83.1
68.454
Quality
100
Promoting Interoperability
Reporting: Individual
Hospital and facility affiliations
Facilities where Brent Walker, M.D. 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.
Fands Physical Therapy, Inc
Alma, AR
Orthoarkansas PA
Little Rock, AR
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 Brent Walker, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$1.5K
Largest payer
Abbott Laboratories
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
Brent Walker, M.D. - brand share 1.0%
Anesthesiology Physician average
1% brand-name claims vs 99% generic, on 2,259 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.
2,259
Total Claims
$48K
Total Drug Cost
388
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,374
- Total Day Supply
- 66,332
- Brand vs Generic
- 1% brand / 99% generic
- Brand Drug Cost
- $6K
- Generic Drug Cost
- $42K
- Opioid Claims
- 1,175 (52.0% rate)
Patient Demographics
- Average Patient Age
- 67.4 years
- Avg HCC Risk Score
- 1.35
- Gender Split
- 63% female / 37% male
- Age Distribution
- <65: 124, 65-74: 154, 75-84: 92, 85+: 18
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Brent Walker, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Hydrocodone-Acetam…
Hydrocodone-Acetaminophen
474 claims
- Oxycodone-Acetamin…
Oxycodone-Acetaminophen
263 claims
- Gabapentin
Gabapentin
242 claims
- Tizanidine Hcl
Tizanidine Hcl
192 claims
- Tramadol Hcl 165
Tramadol Hcl
165 claims
- Meloxicam 147
Meloxicam
147 claims
- Oxycodone Hcl 142
Oxycodone Hcl
142 claims
- Amitriptyline Hcl 92
Amitriptyline Hcl
92 claims
| Drug | Claims |
|---|---|
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 474 |
| Oxycodone-Acetaminophen Oxycodone Hcl/Acetaminophen | 263 |
| Gabapentin | 242 |
| Tizanidine Hcl | 192 |
| Tramadol Hcl | 165 |
| Meloxicam | 147 |
| Oxycodone Hcl | 142 |
| Amitriptyline Hcl | 92 |
| Cyclobenzaprine Hcl | 67 |
| Diclofenac Sodium | 59 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Anesthesiology Physician Overview
How Brent Walker, M.D. fits within the Anesthesiology Physician landscape nationally.
56,432
Anesthesiology Physician Providers in US
56
States with Anesthesiology Physician
860
Avg Claims per Provider
Brent Walker, M.D.'s 2,259 claims are above the specialty average of 860.
Nearby Anesthesiology Physician Providers in Arkansas
Other clinicians with the same primary specialty enrolled in Arkansas, drawn from the same CMS NPPES roster as Walker.
Dr. Mohamed Abdeldayem
M.D.
Little Rock, AR
Dr. Esamelden Abdelnaem
M.D.
Little Rock, AR
Dr. Abdenour Abib
MD
Little Rock, AR
Dr. Michael Adams
M.D.
Mena, AR
Dr. Brian Alexander
M.D.
Little Rock, AR
Compare Anesthesiology 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 Arkansas medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Anesthesiology 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.
Healthcare Guides
Learn more about finding, verifying, and understanding healthcare providers.
How to Find a Doctor
Step-by-step guide to choosing a provider
Verify Credentials
Check NPI, board certification & license status
Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore Arkansas
Frequently Asked Questions
What is Brent Walker, M.D.'s specialty? ▼
Brent Walker, M.D. specializes in Anesthesiology Physician and practices in Little Rock, Arkansas. Credentials: M.D..
How much does Brent Walker, M.D. prescribe under Medicare Part D? ▼
In 2023, Brent Walker, M.D. wrote 2,259 Medicare Part D claims totaling $48K in drug costs for 388 beneficiaries.
What is Brent Walker, M.D.'s Medicare quality score? ▼
Brent Walker, M.D. has a CMS MIPS Final Score of 82.6/100 (Quality: 68.5). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Brent Walker, M.D. located? ▼
Brent Walker, M.D. is located at 800 FAIR PARK BLVD, Little Rock, AR, 72204. Phone: (501) 500-3500.
What is Brent Walker, M.D.'s NPI number? ▼
Brent Walker, M.D.'s National Provider Identifier (NPI) is 1952398687, issued on 09/27/2005.
Does Brent Walker, M.D. prescribe more brand-name or generic drugs? ▼
Brent Walker, M.D.'s prescribing is 1% brand-name and 99% generic drugs by claim count, with $6K in brand drug costs.
Does Brent Walker, M.D. prescribe opioids? ▼
Yes, Brent Walker, M.D. had 1,175 opioid claims in 2023 with an opioid prescribing rate of 52.0%.
How many Anesthesiology Physician providers are there in the US? ▼
There are 56,432 Anesthesiology Physician providers across 56 states in the US. The average Anesthesiology Physician provider writes 860 Medicare Part D claims per year.
What drugs does Brent Walker, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Brent Walker, M.D.'s most frequently prescribed drugs include Hydrocodone-Acetaminophen, Oxycodone-Acetaminophen, Gabapentin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Brent Walker, M.D. accept Medicare? ▼
Brent Walker, M.D. appears in CMS Medicare data with 2,259 Part D claims and 388 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Brent Walker, M.D.'s credentials? ▼
Brent Walker, M.D.'s NPI is 1952398687 with credentials M.D.. 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.