NPPES file of Aug 9, 2026

Hematology & Oncology Physician in Colorado

212 NPPES records list hematology & oncology physician with a practice address in Colorado, 3.6 per 100,000 residents, the 30th highest rate of 51. Denver and Aurora have the most; each record links to the provider's NPI and the Colorado license search. Page 5 of 5.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207RH0003X · method

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

Denver has the most, 56

  1. Denver56
  2. Aurora37
  3. Colorado Springs24
  4. Boulder9
  5. Littleton8

Hematology & Oncology Physician records in Colorado

  1. Joseph Thomas, MDLoveland, CO 805381295228484
  2. Virginia Tjan, M.D.Montrose, CO 814011104824630
  3. Russell Tolley, MDLouisville, CO 800271851375414
  4. Christine Urbanski, MDDelta, CO 814161548201528
  5. Joanne Virgilio, DOGrand Junction, CO 815051760468342
  6. Ryan Weight, D.O.Aurora, CO 800451346553591
  7. Breelyn Wilky, MDAurora, CO 800451861539751
  8. Samir Witta, MD PHDEnglewood, CO 801131013991678
  9. Jing Xi, M.D.Centennial, CO 801121275983926
  10. James Young, M.D.Colorado Springs, CO 809071619911872
  11. Pei ZhangColorado Springs, CO 809091699161489
  12. Charles Zinn, MDColorado Springs, CO 809091508840240

Source: CMS NPPES, primary taxonomy 207RH0003X: records by practice city and the list of records, file of Aug 9, 2026.

Colorado ranks 30 of 51 per resident

  1. Missouri3.8
  2. Alabama3.7
  3. Florida3.6
  4. Colorado3.6
  5. Georgia3.6
  6. Indiana3.6
  7. 50 states and D.C.4.2

Source: CMS NPPES, primary taxonomy 207RH0003X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

77.4% of these records appear in a Medicare file, against 82.9% 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. Colorado77.4%
  2. United States82.9%

Hematology & Oncology Physician records in Colorado, measured

  • In a Medicare file164 of 212 · 77.4% here, 82.9% nationally
  • In the CMS Doctors and Clinicians file150 · 70.8% here, 71.3% nationally
  • Not updated in five years or more125 · 59.0% here, 54.3% nationally
  • Median graduation year2004 · the 150 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207RH0003X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

212 NPPES records list hematology & oncology physician (207RH0003X) as their primary taxonomy with a practice address in Colorado: 3.6 per 100,000 residents against 4.2 nationally (50 states and D.C.). Denver has 56 of them (26%).

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. Connecticut198
  2. Alabama191
  3. Louisiana188
  4. Missouri237

States with a similar rate per 100,000

  1. Florida3.6
  2. Georgia3.6
  3. Indiana3.6
  4. Hawaii3.4

The largest states

  1. California1,583
  2. New York1,163
  3. Texas922
  4. Florida818
  5. Pennsylvania784

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.