NPPES file of Aug 9, 2026

Radiation Oncology Physician in Texas

449 NPPES records list radiation oncology physician with a practice address in Texas, 1.5 per 100,000 residents, the 44th highest rate of 51. Houston and Dallas have the most; each record links to the provider's NPI and the Texas license search. Page 7 of 9.

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).

Houston has the most, 157

  1. Houston157
  2. Dallas45
  3. San Antonio28
  4. Austin14
  5. Fort Worth10

Radiation Oncology Physician records in Texas

  1. John O'Connor, M.D.Dallas, TX 752301396709721
  2. Michael O'Reilly, M.D.Houston, TX 770301891869335
  3. Lute Oas, M.D.Abilene, TX 796061013977420
  4. Celine Ord, M.D.Fredericksburg, TX 786241457526048
  5. Theresa Pagliuca, M.D.McAllen, TX 785011790866218
  6. Niraj Pahlajani, M.D.Austin, TX 787051730332693
  7. Neil Parikh, M.D. M.B.A.Temple, TX 765081760895197
  8. Clinton Park, M.D.Fort Worth, TX 761041295932242
  9. Ryan Park, MDHouston, TX 770301376033753
  10. Abhilasha Patel, M.D.Houston, TX 770241649405382
  11. Krishnan Patel, M.D.Houston, TX 770301366839367
  12. Mehul Patel, M.D.Temple, TX 765081023227824
  13. Umang Patel, M.D.The Woodlands, TX 773801700176369
  14. Ami Patel-Yadav, M.D.Bedford, TX 760221164867461
  15. Piyush Pathak, MD, MPHHouston, TX 770541053832931
  16. Sachin Patil, M.D.Houston, TX 770271881899730
  17. Arnold Paulino, M.D.Houston, TX 770301881686152
  18. Jamie Pawlowski, M.D.Bryan, TX 778021619355419
  19. George Perkins, M.D.Houston, TX 770301467557272
  20. Subha Perni, M.D.Houston, TX 770301619418969
  21. James Petrikas, DOPlano, TX 750931356362719
  22. Ngoc Pham, M.D.Houston, TX 770241912342908
  23. Nhat-Long Pham, M.D., PH.D.Dallas, TX 753901003102617
  24. Cuong Phan, MDSpring, TX 773801578564241
  25. Thinh Phan, MDMidland, TX 797011609808864
  26. David Pistenmaa, MDDallas, TX 753901831151877
  27. David Qian, MD, PHDHouston, TX 770301730676008
  28. Assal Rahimi, MDDallas, TX 753901124232343
  29. Tahir Rana, MD PHDPlano, TX 750931689675902
  30. Nalinakshi Rangala, M.D.Cypress, TX 774291083781736
  31. Jay Paul Reddy, MDHouston, TX 770301124373170
  32. Manoj Reddy, MDDallas, TX 752301619977329
  33. Peter Ree, M.D.Harlingen, TX 785501871663401
  34. Teresa Reed, M.D.El Paso, TX 799361023064227
  35. Valerie Reed, M.D.Houston, TX 770301902071905
  36. Douglas Rivera, MDGeorgetown, TX 786261073583274
  37. Michael Rooney, MDHouston, TX 770301073142964
  38. David Rosenthal, M.D.Houston, TX 770301669565719
  39. Jill Ruiz, MDDenison, TX 750201821207044
  40. Omran Saifi, MDHouston, TX 770301699384024
  41. Rogelio Salinas, MDMcAllen, TX 785031942243837
  42. Mary Sands, M.D.Tomball, TX 773751467450403
  43. Mona Sanghani, M.D.Houston, TX 770251992825079
  44. Maygol Sarvi, D.O.Paris, TX 754601093723777
  45. Mark Saunders, MDTyler, TX 757021629010855
  46. Pamela Schlembach, M.D.Houston, TX 770301285729574
  47. Alvin Schlichtemeier, M.D.Bryan, TX 778021366415416
  48. Benjamin Schrank, MD, PHDHouston, TX 770301679109664
  49. Donald Schwarz, M.D.Dallas, TX 752311437186244
  50. Granger Scruggs, MDDallas, TX 752461598896417

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

Texas ranks 44 of 51 per resident

  1. Virginia1.6
  2. Alabama1.6
  3. South Carolina1.5
  4. Texas1.5
  5. Louisiana1.4
  6. Nevada1.4
  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.

84.9% 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. Texas84.9%
  2. United States82.3%

Radiation Oncology Physician records in Texas, measured

  • In a Medicare file381 of 449 · 84.9% here, 82.3% nationally
  • In the CMS Doctors and Clinicians file348 · 77.5% here, 74.0% nationally
  • Not updated in five years or more275 · 61.2% here, 54.6% nationally
  • Median graduation year2004 · the 348 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

449 NPPES records list radiation oncology physician (2085R0001X) as their primary taxonomy with a practice address in Texas: 1.5 per 100,000 residents against 2.1 nationally (50 states and D.C.). Houston has 157 of them (35%).

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. New York449
  2. Pennsylvania383
  3. Florida520
  4. Ohio298

States with a similar rate per 100,000

  1. South Carolina1.5
  2. Louisiana1.4
  3. Nevada1.4
  4. Mississippi1.4

The largest states

  1. California735
  2. Florida520
  3. New York449
  4. Pennsylvania383
  5. Ohio298

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.