NPPES file of Aug 9, 2026

Radiation Oncology Physician in Colorado

111 NPPES records list radiation oncology physician with a practice address in Colorado, 1.9 per 100,000 residents, the 32nd highest rate of 51. Aurora and Denver have the most; each record links to the provider's NPI and the Colorado license search. Page 3 of 3.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 2085R0001X · method

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Aurora has the most, 21

  1. Aurora21
  2. Denver14
  3. Colorado Springs13
  4. Grand Junction6
  5. Fort Collins5

Radiation Oncology Physician records in Colorado

  1. Michael Vantuyl, M.D.Sterling, CO 807511134261902
  2. Sriram Venigalla, MDLoveland, CO 805381528478724
  3. Narine Wandrey, MDDenver, CO 802181437654332
  4. Timothy Waxweiler, M.D.Colorado Springs, CO 809501093005738
  5. Marie Weeks, MDLittleton, CO 801201568434207
  6. Julie WeintraubWheat Ridge, CO 800331689993115
  7. Elaine Weng, MDDenver, CO 802621790892537
  8. Benjamin Willen, MDGreeley, CO 806311437643905
  9. Andrzej Wojcieszynski, MDDenver, CO 802181316203003
  10. Ralph Wright, MDLakewood, CO 802281932193034
  11. Yu ZhouGrand Junction, CO 815011215420427

Source: CMS NPPES, primary taxonomy 2085R0001X: records by practice city and the list of records, file of Aug 9, 2026.

Colorado ranks 32 of 51 per resident

  1. Hawaii2.0
  2. Kentucky1.9
  3. Maine1.9
  4. Colorado1.9
  5. California1.9
  6. Nebraska1.9
  7. 50 states and D.C.2.1

Source: CMS NPPES, primary taxonomy 2085R0001X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

86.5% of these records appear in a Medicare file, against 82.3% nationally

A Medicare file here is Part D prescribing (2024), a MIPS score (2023), an Open Payments record (2024) or Medicare group billing (CMS Doctors and Clinicians). A record outside them may still see patients: these files cover Medicare only.

  1. Colorado86.5%
  2. United States82.3%

Radiation Oncology Physician records in Colorado, measured

  • In a Medicare file96 of 111 · 86.5% here, 82.3% nationally
  • In the CMS Doctors and Clinicians file88 · 79.3% here, 74.0% nationally
  • Not updated in five years or more55 · 49.5% here, 54.6% nationally
  • Median graduation year2007 · the 88 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 2085R0001X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

111 NPPES records list radiation oncology physician (2085R0001X) as their primary taxonomy with a practice address in Colorado: 1.9 per 100,000 residents against 2.1 nationally (50 states and D.C.). Aurora has 21 of them (19%).

A record is a registration a provider made and keeps up to date: it shows neither that the provider is licensed nor that they still practice there. The state's own license search is the check.

States with a similar number

  1. Oregon115
  2. Maryland124
  3. Tennessee132
  4. Kentucky88

States with a similar rate per 100,000

  1. California1.9
  2. Nebraska1.9
  3. Maine1.9
  4. Delaware1.8

The largest states

  1. California735
  2. Florida520
  3. New York449
  4. Texas449
  5. Pennsylvania383

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy; 2023 Census population estimates. A registry record 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.