NPPES file of Aug 9, 2026

William Matthew Bartek, M.D

Critical Care Medicine (Internal Medicine) Physician · Austin, TX

William Matthew Bartek, M.D is a critical care medicine (internal medicine) physician with a practice address in Austin, Texas, and NPI 1598722522, issued on Apr 26, 2006. Check the license (Texas K2642, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1598722522
Name
William Matthew Bartek
Credential
M.D
Primary taxonomy
Critical Care Medicine (Internal Medicine) Physician 207RC0200X
License number
K2642 TX
Self-reported in NPPES; status is on the state search
Practice location
5920 W William Cannon Dr, Austin, TX 78749
Phone
(512) 441-9799
Enumerated
Apr 26, 2006
Record last updated
Oct 24, 2016 (not updated in 10 years: call before relying on the address or phone)
Fax
(512) 441-9814
Medicaid ID
153723501 TX
Medicare enrollment
Enrolled (PECOS I20040602000361); accepts Medicare assignment
Medical or professional school
University Of Pittsburgh School Of Medicine, 1996
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 5920 W William Cannon Dr

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Trevor Colm, DCChiropractor1679938609
  2. Sean Gilbey, MDCritical Care Medicine (Internal Medicine) Physician1184628828
  3. Brandon Hedgecock, D.D.S.Dentist1043416753
  4. Vinay Parameswara, M.D., M.P.H., PH.D.Internal Medicine Physician1326272246
  5. Michael Warner, MDCritical Care Medicine (Internal Medicine) Physician1801112826

Verify William Matthew Bartek in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersTexas Medical Board
    Search for license K2642
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Texas license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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2.4 times the Medicare Part D claims of the average critical care medicine (internal medicine) physician in 2024

1,692 Medicare Part D claims for 314 beneficiaries, against an average of 696 among the 2,873 providers of this specialty who prescribed in Part D. Brand-name drugs were 56% of claims.

  1. William Bartek1,692
  2. Specialty average696

Most prescribed

  1. Trelegy Ellipta235 claims
  2. Albuterol Sulfate Hfa210 claims
  3. Prednisone148 claims
  4. Breo Ellipta119 claims
  5. Azithromycin112 claims
  6. Montelukast Sodium71 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

The practice group's MIPS final score for 2023 (Medicare payment program): 80.8 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score89.2
  2. Costout of 100 · 30%41.7
  3. Promoting interoperabilitynot scored (reweighted)
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $45,584.23

81 payments; by number, the most common kind was travel and lodging; the largest payer was Intuitive Surgical, Inc. The 2,708 providers of this specialty with any payment received $2,958.68 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. William Bartek$45,584
  2. Specialty average$2,959

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through 2 group practices

  1. Austin Pulmonary Consultants PAAustin, TX
  2. Cogent Healthcare OF Texas PAAustin, TX

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

William Matthew Bartek among 413 critical care medicine (internal medicine) physician records in Texas

William Matthew Bartek, M.D is one of 413 critical care medicine (internal medicine) physician records with a practice address in Texas. 90% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 6% of them.

  • NPI issued2006 · 6% of these records are older, 70% newer
  • In a Medicare fileYes · 90% of these records are
  • In the CMS Doctors and Clinicians fileYes · 84% of these records are
  • Graduated1996 · median 2007 among the 346 with a school on file
  • Record last updated2016 · 40% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0200X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Critical Care Medicine (Internal Medicine) Physician providers in Texas

There are 413 critical care medicine (internal medicine) physician records in Texas.

The 8 critical care medicine (internal medicine) physician records with the nearest ZIP codes

  1. Sean Gilbey, MDAustin, TX 787491184628828
  2. Sireesha Gogineni, M.DAustin, TX 787491801974423
  3. Sapan Patel, MDAustin, TX 787491295075661
  4. Subramaniyam Rajan, M.D.Austin, TX 787491922324813
  5. Usha Rao, M.D.Austin, TX 787491952627010
  6. Michael Warner, MDAustin, TX 787491801112826
  7. Jon Belsher, M.D.Austin, TX 787461801810080
  8. Matthew Anderson, MDAustin, TX 787271023221959

Common questions

What is William Matthew Bartek, M.D's NPI number?

William Matthew Bartek, M.D's National Provider Identifier (NPI) is 1598722522, issued on Apr 26, 2006. An NPI identifies a provider in billing; it is not a license.

Where is William Matthew Bartek, M.D located?

The NPPES record lists a practice address at 5920 W William Cannon Dr, Austin, TX, 78749. Phone: (512) 441-9799. Providers update this record themselves, so call before visiting.

How can I verify William Matthew Bartek, M.D's license?

NPPES lists Texas license number K2642, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does William Matthew Bartek, M.D prescribe under Medicare Part D?

In 2024, William Matthew Bartek, M.D had 1,692 Medicare Part D claims for 314 beneficiaries; the average among critical care medicine (internal medicine) physician prescribers was 696. Part D covers Medicare prescriptions only.

What is William Matthew Bartek, M.D's MIPS final score?

The 2023 MIPS final score is 80.8 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.