NPI registry status
Active
2026 NPPES data Critical Care Medicine (Internal Medicine) Physician NPI 1750474326 M.D.
Verify on CMS → Timothy Williamson, M.D.
Critical Care Medicine (Internal Medicine) Physician in Kansas City, Kansas.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 6,646 in Critical Care 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
2K
Medicare Part D claims · 134 beneficiaries · Critical Care Medicine (Internal Medicine) Physician avg: 1K
MIPS score
91.9/100
▲ 9 pts above national avg 83.1 · Exceptional
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Timothy Williamson, M.D. reported a CMS MIPS final score of 91.9/100 - above the 83.1 national average - and filed 1,919 Medicare Part D claims in 2023.
- 91.9/100
- MIPS score · +9 vs avg
- 2K
- Part D claims, 2023
- 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.
Timothy Williamson, 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
92 Top 37% higher than 63% 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 Timothy Williamson, M.D. sits
This provider among critical care medicine (internal medicine) physician peers
Across the 1,643 critical care medicine (internal medicine) physician providers who report both Medicare Part D prescribing and a MIPS quality score, Timothy Williamson, M.D. writes more Part D claims than 78% of them and scores higher on MIPS quality than 66% - 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 critical care medicine (internal medicine) physician peer from a representative sample of 60; the gold marker is Timothy Williamson, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Timothy Williamson, M.D. 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 Timothy Williamson, M.D.?
High performer (top quartile)Primary specialty
Critical Care Medicine (Internal Medicine) Physician
Medicare Part D claims
1,919 80% vs specialty avg
MIPS final score
91.9/100 8.8 pts vs avg
Specialty distribution in Kansas
How Critical Care Medicine (Internal Medicine) Physician compares to other specialties among Kansas providers
Medicare quality performance, MIPS
Timothy Williamson, M.D.'s 2023 MIPS final score plotted against the Critical Care Medicine (Internal Medicine) Physician national average
- MIPS Final Score
- 91.9/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Critical Care Medicine (Internal Medicine) Physician) - 91.9/100 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).
Timothy Williamson, M.D. appears in the CMS NPPES registry as a Critical Care Medicine (Internal Medicine) Physician provider holding M.D. credentials at 3901 RAINBOW BLVD, Kansas City, KS, 66160, with a listed phone of (913) 588-6045. NPI 1750474326 was issued on 10/02/2006.
Medicare Part D records for calendar year 2023 show 1,919 prescription claims written by this provider, covering 134 Medicare beneficiaries and totaling roughly $8.6 million in drug spend. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 91.9/100 for the 2023 performance year (Quality 75.2), compared with the national average of 83.1.
Critical Care Medicine (Internal Medicine) Physician is a mid-sized specialty nationwide, with 6,646 enrolled providers across 53 states and an average of 1,069 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 | 1750474326 |
|---|---|
| Specialty | Critical Care Medicine (Internal Medicine) Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 10/02/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
91.8902
Final Score
Avg: 83.1
75.1734
Quality
100
Promoting Interoperability
Reporting: Alternative Payment Model
Hospital and facility affiliations
Facilities where Timothy Williamson, 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.
Kansas University Physicians Inc
Lenexa, KS
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
1,919
Total Claims
$8.6M
Total Drug Cost
134
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,844
- Total Day Supply
- 83,080
- Generic Drug Cost
- $879K
- Antibiotic Claims
- 17
Patient Demographics
- Average Patient Age
- 68.1 years
- Avg HCC Risk Score
- 2.38
- Gender Split
- 73% female / 27% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Timothy Williamson, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Tadalafil
Tadalafil
342 claims
- Sildenafil Citrate
Sildenafil Citrate
236 claims
- Opsumit
Opsumit
193 claims
- Tyvaso Dpi
Tyvaso Dpi
147 claims
- Furosemide 126
Furosemide
126 claims
- Spironolactone 96
Spironolactone
96 claims
- Potassium Chloride 80
Potassium Chloride
80 claims
- Adempas 64
Adempas
64 claims
| Drug | Claims |
|---|---|
| Tadalafil | 342 |
| Sildenafil Citrate | 236 |
| Opsumit Macitentan | 193 |
| Tyvaso Dpi Treprostinil | 147 |
| Furosemide | 126 |
| Spironolactone | 96 |
| Potassium Chloride | 80 |
| Adempas Riociguat | 64 |
| Ambrisentan | 63 |
| Bosentan | 50 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Critical Care Medicine (Internal Medicine) Physician in KS →
All providers in Kansas →
Compare specialties →
Critical Care Medicine (Internal Medicine) Physician Overview
How Timothy Williamson, M.D. fits within the Critical Care Medicine (Internal Medicine) Physician landscape nationally.
6,646
Critical Care Medicine (Internal Medicine) Physician Providers in US
53
States with Critical Care Medicine (Internal Medicine) Physician
1,069
Avg Claims per Provider
Timothy Williamson, M.D.'s 1,919 claims are above the specialty average of 1,069.
Nearby Critical Care Medicine (Internal Medicine) Physician Providers in Kansas
Other clinicians with the same primary specialty enrolled in Kansas, drawn from the same CMS NPPES roster as Williamson.
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 Kansas medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Critical Care 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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Understanding Medicare Claims Data
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Frequently Asked Questions
What is Timothy Williamson, M.D.'s specialty? ▼
Timothy Williamson, M.D. specializes in Critical Care Medicine (Internal Medicine) Physician and practices in Kansas City, Kansas. Credentials: M.D..
How much does Timothy Williamson, M.D. prescribe under Medicare Part D? ▼
In 2023, Timothy Williamson, M.D. wrote 1,919 Medicare Part D claims totaling $8.6M in drug costs for 134 beneficiaries.
What is Timothy Williamson, M.D.'s Medicare quality score? ▼
Timothy Williamson, M.D. has a CMS MIPS Final Score of 91.9/100 (Quality: 75.2). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Timothy Williamson, M.D. located? ▼
Timothy Williamson, M.D. is located at 3901 RAINBOW BLVD, Kansas City, KS, 66160. Phone: (913) 588-6045.
What is Timothy Williamson, M.D.'s NPI number? ▼
Timothy Williamson, M.D.'s National Provider Identifier (NPI) is 1750474326, issued on 10/02/2006.
How many Critical Care Medicine (Internal Medicine) Physician providers are there in the US? ▼
There are 6,646 Critical Care Medicine (Internal Medicine) Physician providers across 53 states in the US. The average Critical Care Medicine (Internal Medicine) Physician provider writes 1,069 Medicare Part D claims per year.
What drugs does Timothy Williamson, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Timothy Williamson, M.D.'s most frequently prescribed drugs include Tadalafil, Sildenafil Citrate, Opsumit. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Timothy Williamson, M.D. accept Medicare? ▼
Timothy Williamson, M.D. appears in CMS Medicare data with 1,919 Part D claims and 134 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Timothy Williamson, M.D.'s credentials? ▼
Timothy Williamson, M.D.'s NPI is 1750474326 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.