NPPES file of Aug 9, 2026

Internal Medicine Physician in Arizona

2,853 NPPES records list internal medicine physician with a practice address in Arizona, 38 per 100,000 residents, the 27th highest rate of 51. Phoenix and Tucson have the most; each record links to the provider's NPI and the Arizona license search. Page 38 of 58.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207R00000X · method

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

Phoenix has the most, 695

  1. Phoenix695
  2. Tucson651
  3. Scottsdale344
  4. Mesa157
  5. Chandler93

Internal Medicine Physician records in Arizona

  1. Eun Oh, MDOro Valley, AZ 857371558391672
  2. Anita Ojha-Hammad, MDMesa, AZ 852061952361396
  3. Chukwuemeka Okafor, MBBSScottsdale, AZ 852541104389196
  4. Gerald Oldham, MDPeoria, AZ 853811235176207
  5. Carmen Oliveras, M.D.Chandler, AZ 852241053390229
  6. Patricia Olm, MDFlagstaff, AZ 860011306832670
  7. Jacqueline Olmert, M.D.Phoenix, AZ 850131962491845
  8. Shayne Olsen, DOPhoenix, AZ 850431841320900
  9. April Olson, MD, MPHScottsdale, AZ 852581699357103
  10. Kurt OlsonPhoenix, AZ 850061740691575
  11. J. Olson-Garewal, MDTucson, AZ 857011164641072
  12. Demarie Olu-Williams, D.OMesa, AZ 852071841533791
  13. Sam Olum, MDScottsdale, AZ 852591699505248
  14. Robert Omuria, MDPhoenix, AZ 850161962696856
  15. Germaine Ong, MDMorenci, AZ 855401952338691
  16. Gloria Ong, MDGoodyear, AZ 853951134570971
  17. Angelo Ong-Veloso, M.D.Lake Havasu City, AZ 864031124020284
  18. Chuba Ononye, MDMesa, AZ 852091629026018
  19. Oyoyo Onuoha, M.D.Mesa, AZ 852121811183171
  20. Henry Onyirimba, MDPhoenix, AZ 850371003876061
  21. Frank Oppong-Takyi, MDPhoenix, AZ 850481497770465
  22. Roxana Orbegoso, M.D.Scottsdale, AZ 852541255326138
  23. Xavier Orcutt, MDChinle, AZ 865031336609023
  24. Sean Oregan, M.D.Mesa, AZ 852121164486460
  25. Michael OrensteinTucson, AZ 857501093193351
  26. Jane Orient, MDTucson, AZ 857161851895981
  27. Geoffrey Orme, DOPhoenix, AZ 850061386906881
  28. Jordan OrmsbyGlendale, AZ 853061114503737
  29. Gustavo Ortega, M.D.Tucson, AZ 857111750644894
  30. Leroy Ortiz, M.D.Phoenix, AZ 850201366654394
  31. Benjamin Osborne, D.O.Phoenix, AZ 850131740462894
  32. Abdul-Fatawu Osman, MDPhoenix, AZ 850131801414206
  33. Tara Ostrom, M.D.Phoenix, AZ 850271124017009
  34. Craig Ottenstein, MDBenson, AZ 856021275658064
  35. Agnes Ovienmhada, MDPhoenix, AZ 850311902028871
  36. Hadil Owaynat, DOGilbert, AZ 852961003553397
  37. Abraham Owusu Dommey, MDGilbert, AZ 852971457311367
  38. Christine Oxley, MDTucson, AZ 857451902219322
  39. Lee Pace, M.D.Mesa, AZ 852031790772622
  40. Altagracia Pacheco, MDPhoenix, AZ 850421033171426
  41. Daniel Pacheco, MDGilbert, AZ 852341346401759
  42. Carlos Pacheco Cano, MDSierra Vista, AZ 856351699161190
  43. Bruce Packer, M.D.Phoenix, AZ 850161356348338
  44. Caridad Padron, MDKingman, AZ 864091003310616
  45. Frances Palermo Alvarado, MDGlendale, AZ 853061700383791
  46. John Palmer, MDTucson, AZ 857231710060645
  47. Srinivasa Palnati, MDSun City, AZ 853511881688992
  48. Michael PalomaresTucson, AZ 857231841183878
  49. Pasquale Palumbo, M.D.Scottsdale, AZ 852591700869088
  50. Frederick Pan, MDTucson, AZ 857101992634711

Source: CMS NPPES, primary taxonomy 207R00000X: records by practice city and the list of records, file of Aug 9, 2026.

Arizona ranks 27 of 51 per resident

  1. Nebraska41
  2. Washington39
  3. Nevada38
  4. Arizona38
  5. Louisiana38
  6. North Carolina37
  7. 50 states and D.C.44

Source: CMS NPPES, primary taxonomy 207R00000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

75.2% of these records appear in a Medicare file, against 78.7% 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. Arizona75.2%
  2. United States78.7%

Internal Medicine Physician records in Arizona, measured

  • In a Medicare file2,145 of 2,853 · 75.2% here, 78.7% nationally
  • In the CMS Doctors and Clinicians file1,645 · 57.7% here, 61.4% nationally
  • Not updated in five years or more1,449 · 50.8% here, 55.4% nationally
  • Median graduation year2003 · the 1,643 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207R00000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

2,853 NPPES records list internal medicine physician (207R00000X) as their primary taxonomy with a practice address in Arizona: 38 per 100,000 residents against 44 nationally (50 states and D.C.). Phoenix has 695 of them (24%).

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. Minnesota2,632
  2. Washington3,079
  3. Connecticut2,623
  4. Missouri2,604

States with a similar rate per 100,000

  1. Nevada38.5
  2. Louisiana38.2
  3. North Carolina37.4
  4. Tennessee36.4

The largest states

  1. California17,696
  2. New York12,067
  3. Florida10,151
  4. Texas9,175
  5. Pennsylvania7,300

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.