NPI registry status
Active
2026 NPPES data Sleep Medicine (Internal Medicine) Physician NPI 1194764290 MD
Verify on CMS → Jason Williams, MD
Sleep Medicine (Internal Medicine) 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 932 in Sleep 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
135
Medicare Part D claims · 72 beneficiaries · Sleep Medicine (Internal Medicine) Physician avg: 1K
Industry payments
$1.1K
45 payments · CMS Open Payments (Sunshine Act)
What the federal data shows
Jason Williams, MD filed 135 Medicare Part D claims in 2024 as a Sleep Medicine (Internal Medicine) Physician in Little Rock, Arkansas.
- 135
- Part D claims, 2024
- Likely
- board-certified (heuristic)
- ≥34th
- pct by Part D claim volume (lower-bound band)
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.
Federal trust snapshot
What official records show about Jason Williams, MD
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1194764290), first enumerated 06/05/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 135 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Reported
Industry payment transparency
$1.1K in reported industry payments (45 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1194764290 · Sleep Medicine (Internal Medicine) Physician
NPI-10 · ENUM-LEGACY · TAX-NARROW · RX-LIGHT · BOOK-THIN · PHOTO-ENUM
- NPI-10 1194764290
- ENUM-LEGACY 2006
- TAX-NARROW 932
- RX-LIGHT 135
- BOOK-THIN 5 in Arkansas
- PHOTO-ENUM James Meyer, MD · 2006
Jason Williams, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
135 ≥ 34th percentile 34% of 1,416,883 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
✓
Board certification likely (heuristic, not verified)
Jason Williams, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 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 Jason Williams, MD?
Quality data not reportedPrimary specialty
Sleep Medicine (Internal Medicine) Physician
Medicare Part D claims
135 90% vs specialty avg
Specialty distribution in Arkansas
How Sleep Medicine (Internal Medicine) Physician compares to other specialties among Arkansas 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 Sleep Medicine (Internal Medicine) 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).
Practice Address
Provider Details
| NPI | 1194764290 |
|---|---|
| Specialty | Sleep Medicine (Internal Medicine) Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 06/05/2006 |
Hospital and facility affiliations
Facilities where Jason Williams, 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.
Arkansas Health Group
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 Jason Williams, MD. Source: openpaymentsdata.cms.gov.
Total received
$1.1K
Largest payer
JAZZ PHARMACEUTICALS 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 2024.
135
Total Claims
$6K
Total Drug Cost
72
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 180
- Total Day Supply
- 4,919
- Generic Drug Cost
- $1K
Patient Demographics
- Average Patient Age
- 68.3 years
- Avg HCC Risk Score
- 1.65
- Gender Split
- 57% female / 43% male
- Age Distribution
- <65: 19, 65-74: 34, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Jason Williams, MD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Zolpidem Tartrate
Zolpidem Tartrate
35 claims
- Ropinirole Hcl
Ropinirole Hcl
18 claims
- Trazodone Hcl
Trazodone Hcl
17 claims
- Pramipexole Dihydr… 11
Pramipexole Dihydrochloride
11 claims
- Zaleplon 11
Zaleplon
11 claims
| Drug | Claims |
|---|---|
| Zolpidem Tartrate | 35 |
| Ropinirole Hcl | 18 |
| Trazodone Hcl | 17 |
| Pramipexole Dihydrochloride Pramipexole Di-Hcl | 11 |
| Zaleplon | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Sleep Medicine (Internal Medicine) Physician in AR →
All providers in Arkansas →
Compare specialties →
Sleep Medicine (Internal Medicine) Physician Overview
How Jason Williams, MD fits within the Sleep Medicine (Internal Medicine) Physician landscape nationally.
932
Sleep Medicine (Internal Medicine) Physician Providers in US
52
States with Sleep Medicine (Internal Medicine) Physician
1,288
Avg Claims per Provider
Jason Williams, MD's 135 claims are below the specialty average of 1,288.
Nationwide Sleep Medicine (Internal Medicine) Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Williams, both outside Arkansas so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Sleep Medicine (Internal Medicine) Physician Providers in Arkansas
Other clinicians with the same primary specialty enrolled in Arkansas, drawn from the same CMS NPPES roster as Williams.
One of 5 Sleep Medicine (Internal Medicine) Physician providers enrolled in Arkansas, 4 are shown here.
Dr. David Davila
M.D.
Little Rock, AR
Dr. Michael Eckles
MD
Fayetteville, AR
Dr. Nanjunda Prabha
M.D
Batesville, AR
Erica Williams
PA-C
Searcy, AR
Compare Sleep Medicine (Internal Medicine) Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Jason Williams, MD's specialty? ▼
Jason Williams, MD specializes in Sleep Medicine (Internal Medicine) Physician and practices in Little Rock, Arkansas. Credentials: MD.
How much does Jason Williams, MD prescribe under Medicare Part D? ▼
In 2024, Jason Williams, MD wrote 135 Medicare Part D claims totaling $6K in drug costs for 72 beneficiaries.
Where is Jason Williams, MD located? ▼
Jason Williams, MD is located at 9500 KANIS RD, Little Rock, AR, 72205. Phone: (501) 202-1902.
What is Jason Williams, MD's NPI number? ▼
Jason Williams, MD's National Provider Identifier (NPI) is 1194764290, issued on 06/05/2006.
How many Sleep Medicine (Internal Medicine) Physician providers are there in the US? ▼
There are 932 Sleep Medicine (Internal Medicine) Physician providers across 52 states in the US. The average Sleep Medicine (Internal Medicine) Physician provider writes 1,288 Medicare Part D claims per year.
What drugs does Jason Williams, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, Jason Williams, MD's most frequently prescribed drugs include Zolpidem Tartrate, Ropinirole Hcl, Trazodone Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Jason Williams, MD accept Medicare? ▼
Jason Williams, MD appears in CMS Medicare data with 135 Part D claims and 72 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Jason Williams, MD's credentials? ▼
Jason Williams, MD's NPI is 1194764290 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 (2024). 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 August 2026 (NPPES) / 2024 (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
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 August 2026.