NPPES file of Aug 9, 2026

Internal Medicine Physician in Puerto Rico

1,146 NPPES records list internal medicine physician with a practice address in Puerto Rico. San Juan and Bayamon have the most; each record links to the provider's NPI. Page 11 of 23.

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).

San Juan has the most, 322

  1. San Juan322
  2. Bayamon117
  3. Ponce116
  4. Mayaguez60
  5. Caguas58

Internal Medicine Physician records in Puerto Rico

  1. Jose Manautou, M.DCaguas, PR 007251871683235
  2. Julio Mantero Hormazabal, M.D.Bayamon, PR 009591124024542
  3. Efrain Marcantoni, M.D.Ciales, PR 006381053387993
  4. Orlando Marchena Arraut, MDPonce, PR 007161831114719
  5. Nancy Marin, M.D.San Juan, PR 009261215155841
  6. Antonia Marques, M.D.San Juan, PR 009261275579344
  7. Andre Marra NazarioSan Juan, PR 009361720613060
  8. Milagros Marrero, MDSan Juan, PR 009211730169244
  9. Ernesto Marrero De Gracia, M.D.Bayamon, PR 009611295743367
  10. Luz Marrero Maldonado, MDVega Alta, PR 006921952374506
  11. Sylmarie Marrero Martinez, MDSan Juan, PR 009091245475938
  12. Arnaldo Marrero Rodriguez, M.DSan Juan, PR 009231598822512
  13. Francisco Marte Cabrera, M.D.Canovanas, PR 007291083669279
  14. Francisco Marte-OquendoCanovanas, PR 007291760912810
  15. Ana Martes Bermudez, MDBayamon, PR 009611073099131
  16. Awilda Martinez, M.D.Trujillo Alto, PR 009761801879820
  17. Eddanys Martinez, M.D.San German, PR 006831407831514
  18. Elfren Martinez, M.DAguas Buenas, PR 007031245204411
  19. Elga Martinez, M.DPonce, PR 007161154704872
  20. Hector Martinez, M.D.Ponce, PR 007171164476982
  21. Johanna Martinez, M.D.Guaynabo, PR 009691033105580
  22. Mariana Martinez, MDSan Juan, PR 009091831680065
  23. Rafael Martinez, M.D.Caguas, PR 007271285782524
  24. Ronaldo MartinezSan Juan, PR 009171194927129
  25. Gretchen Martinez Alayon, M.D.Hatillo, PR 006591942465661
  26. Victor Martinez Aponte, MDSan Juan, PR 009211134795966
  27. Jose Martinez Cintron, M.D.Caguas, PR 007251255771416
  28. Carlos Martinez Duran, MDBayamon, PR 009611700863420
  29. Jose Martinez Fernandez, MDSan Juan, PR 009181477542322
  30. Anisonia Martinez Hernandez, MDCarolina, PR 009851053378091
  31. Hector Martinez Torres, MDCaguas, PR 007251821032087
  32. Arnaldo Martinez-Leon, MDSan Juan, PR 009211528087103
  33. Luz Martinez-Martinez, M.D.Sabana Grande, PR 006371265436794
  34. Yolanda Mas De Leon, M.D.Fajardo, PR 007381952372880
  35. Manuel Mateo Lopez, 11772Toa Alta, PR 009541942345384
  36. Carlos Matos, MDSantarce, PR 009071912989609
  37. Giselle MatosBayamon, PR 009561487329504
  38. Rafael Matos, M.D.Mayaguez, PR 006801043247893
  39. Jeysla Matos Chaparro, MDSan Juan, PR 009361700474210
  40. Jorge Matos Figueroa, M.D.Ponce, PR 007161790834539
  41. Evelyn Matta Fontanet, M.D.Rio Grande, PR 007451700822574
  42. Jorge Mattei, MDSan Juan, PR 009091720046378
  43. Mitchell Matundan, M.D.Bayamon, PR 009611063489557
  44. Miguel Maymon Lugo, MDMayaguez, PR 006801295732766
  45. Gerald Mazo Cruzado, MDCayey, PR 009361407173545
  46. Benjamin Medina, MDMayaguez, PR 006801093883258
  47. Lisa Medina, M.D.Bayamon, PR 009561932183506
  48. Margarita Medina, M.D.San Juan, PR 009261518991017
  49. Sixto Medina, MDBayamon, PR 009561982151585
  50. Kristina Medina AgramonteBayamon, PR 009561265170583

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

78.9% 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. Puerto Rico78.9%
  2. United States78.7%

Internal Medicine Physician records in Puerto Rico, measured

  • In a Medicare file904 of 1,146 · 78.9% here, 78.7% nationally
  • In the CMS Doctors and Clinicians file595 · 51.9% here, 61.4% nationally
  • Not updated in five years or more632 · 55.1% here, 55.4% nationally
  • Median graduation year1996 · the 595 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

1,146 NPPES records list internal medicine physician (207R00000X) as their primary taxonomy with a practice address in Puerto Rico. San Juan has 322 of them (28%).

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. Oklahoma1,115
  2. Nevada1,229
  3. Rhode Island1,033
  4. Kansas1,010

States with a similar rate per 100,000

  1. Georgia35.5
  2. Wisconsin35.2
  3. New Mexico36.4
  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.