NPPES file of Aug 9, 2026

Allergy & Immunology Physician in Minnesota

85 NPPES records list allergy & immunology physician with a practice address in Minnesota, 1.5 per 100,000 residents, the 8th highest rate of 51. Rochester and Saint Paul have the most; each record links to the provider's NPI and the Minnesota license search. Page 2 of 2.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207K00000X · method

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

Rochester has the most, 24

  1. Rochester24
  2. Saint Paul10
  3. Minneapolis9
  4. St Louis Park6
  5. Burnsville2

Allergy & Immunology Physician records in Minnesota

  1. Douglas McMahon, M.D.Maplewood, MN 551091356533293
  2. Caitlin McNulty, MDRochester, MN 559051467895680
  3. Kristi Monson, MDDuluth, MN 558051891746210
  4. Ramarathinam Nagarajan, MD PHDMinneapolis, MN 554021689636482
  5. Ingrid NeelRochester, MN 559041427000975
  6. Emily Nestor, MDRochester, MN 559051568158319
  7. Andrew Nickels, M.D.Burnsville, MN 553371922230101
  8. Sarah Nicolai, M.D.Saint Paul, MN 551301558534990
  9. Sydney O'Malley, M.D.Rochester, MN 559051851754626
  10. Jennifer Oldham, MDSt Paul, MN 551301578514212
  11. Nancy Ott, MDMinneapolis, MN 554141295840783
  12. Miguel (michael) Park, M.D.Rochester, MN 559051619940483
  13. Joshua Peterson, MDRochester, MN 559051881331312
  14. Aaron Pinion, DOElk River, MN 553301255642294
  15. Thanai Pongdee, MDRochester, MN 559051538111356
  16. Minto Porter, MDBrainerd, MN 564011790776623
  17. Jason Raasch, MDPlymouth, MN 554461811095854
  18. Srinivasan Ramanuja, M.D.Mankato, MN 560011720184849
  19. Adithi Reddy, MDRochester, MN 559051154940161
  20. Annely Richardson, M.D.St Louis Park, MN 554161699930552
  21. David Schroeckenstein, MDEdina, MN 554351760597207
  22. Ralph Shapiro, M.D.Plymouth, MN 554461043376627
  23. Rolf Sigford, MDMinneapolis, MN 554541306810130
  24. Andrea SitekRochester, MN 559051457883050
  25. Masanao Takahashi, MDMinneapolis, MN 554541366418329
  26. Supriya VaradarajuluMinneapolis, MN 554161780660969
  27. Dayne Voelker, MDRochester, MN 559051578096855
  28. Gerald Volcheck, M.D.Rochester, MN 559051326028812
  29. John Wahlstrom, M.D.Saint Paul, MN 551161104823335
  30. William Walsh, M.D.Saint Paul, MN 551041790783652
  31. Catherine Weiler, M.D.Rochester, MN 559051841260676
  32. Michael Wexler, M.D.Minnetonka, MN 553051093732984
  33. Cherie Zachary, M.D.Woodbury, MN 551251720151608
  34. Steven Zekowski, M.D.Mendota Heights, MN 551201972500106
  35. Yuriy Zgherea, M.D.Wyoming, MN 550921891941373

Source: CMS NPPES, primary taxonomy 207K00000X: records by practice city and the list of records, file of Aug 9, 2026.

Minnesota ranks 8 of 51 per resident

  1. New York1.6
  2. Connecticut1.6
  3. Virginia1.6
  4. Minnesota1.5
  5. Kentucky1.4
  6. New Jersey1.4
  7. 50 states and D.C.1.2

Source: CMS NPPES, primary taxonomy 207K00000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

72.9% of these records appear in a Medicare file, against 80.0% 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. Minnesota72.9%
  2. United States80.0%

Allergy & Immunology Physician records in Minnesota, measured

  • In a Medicare file62 of 85 · 72.9% here, 80.0% nationally
  • In the CMS Doctors and Clinicians file56 · 65.9% here, 65.7% nationally
  • Not updated in five years or more54 · 63.5% here, 57.3% nationally
  • Median graduation year2004 · the 56 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207K00000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

85 NPPES records list allergy & immunology physician (207K00000X) as their primary taxonomy with a practice address in Minnesota: 1.5 per 100,000 residents against 1.2 nationally (50 states and D.C.). Rochester has 24 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. Tennessee85
  2. Arizona88
  3. Washington90
  4. Colorado102

States with a similar rate per 100,000

  1. Kentucky1.4
  2. New Jersey1.4
  3. Pennsylvania1.4
  4. Virginia1.6

The largest states

  1. California444
  2. Texas327
  3. New York311
  4. Florida204
  5. Pennsylvania183

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.