NPPES file of Aug 9, 2026

Doctors and health care providers in Appleton, WI

3,249 individual NPPES records list a practice address in Appleton, 5th of 370 Wisconsin cities. The largest group is physical therapist: 202, 6% of the city's records, against 6% across Wisconsin. Page 42 of 65.

CMS NPPES registry, file of Aug 9, 2026 · method · Verify with CMS →

The 8 largest groups in Appleton

Source: CMS NPPES primary taxonomy, file of Aug 9, 2026.

Appleton in Wisconsin

  • Rank in Wisconsin5th of 370 cities by records
  • Share of the state2.8% of Wisconsin's records
  • Specialties present25 or more taxonomy codes
  • Top three groups16.9% of all records
  • Physical Therapist rank4th of the 10 Wisconsin cities with the most

Compared with Wisconsin as a whole, Appleton has 1.9× the state's share of family nurse practitioner records and 0.57× its share of registered nurse records.

Providers in Appleton, alphabetically

  1. Timothy O'Connor, DCChiropractor1548362072
  2. Kristin O'Neill, RNRegistered Nurse1821769811
  3. Molly O'Neill, RNRegistered Nurse First Assistant1558492595
  4. Tenniele O'Reilly, P.T.Physical Therapist1407024433
  5. Kerry O'Sullivan, COTAOccupational Therapy Assistant1487074688
  6. Jennifer Oberg, DPTPhysical Therapist1003530700
  7. Patrick Obrien, MDCardiovascular Disease Physician1265427496
  8. Miles Obrigewitch, HISHearing Instrument Specialist1336013432
  9. Karel Ochs, MSClinical Exercise Physiologist1366716292
  10. Michael Oconnell, APNPFamily Nurse Practitioner1386070308
  11. Stephanie OconnellSpeech-Language Pathologist1780420182
  12. John Oestreicher, PHDPsychologist1619962024
  13. Susan Oestreicher, PH.D.Clinical Child & Adolescent Psychologist1821338815
  14. Matt Oetken, DOFamily Medicine Physician1528097680
  15. Stella Ofori-Sampong, M.D.Hospitalist Physician1275064834
  16. Stephani Oldenburg, RNRegistered Nurse1831787050
  17. Jennifer Olkowski, LPC, CADC IIIProfessional Counselor1992841795
  18. Rebecca Ollmann, MA LMFTMarriage & Family Therapist1710289954
  19. Kristine Olofson, RNRegistered Nurse1174265425
  20. David Olsen, D.D.S., M.S.Orthodontics and Dentofacial Orthopedics Dentistry1205922861
  21. Adam Olson, M.D.Family Medicine Physician1235405176
  22. Andrea Olson, RNRegistered Nurse1134697972
  23. Bridget OlsonHealth Educator1538868286
  24. Cathy Olson, PTASpecialist1316068091
  25. Heather Olson, PTAPhysical Therapy Assistant1841561339
  26. Leah Olson, C.A.Acupuncturist1831522606
  27. Scott Olvey, MDOrthopaedic Surgery Physician1225035678
  28. Linda Onson, NPNurse Practitioner1750377024
  29. Ezrah Onyejide, MDStudent in an Organized Health Care Education/Training Program1255270617
  30. Stephan Opacich, RPHPharmacist1619313533
  31. Kathryn Opfer, APSWClinical Social Worker1285387142
  32. Karla OpheimPsychiatric Pharmacist1033841994
  33. Erin OpitzPhysical Therapy Assistant1144659483
  34. Claire OpsteenDental Hygienist1588596142
  35. Olabisi OresegunPharmacist1962141713
  36. Lindsay Orlowski, LCSWClinical Social Worker1366065989
  37. Allison OrzelPharmacist1629543053
  38. Alex Orzepowski, DDSDentist1669218731
  39. Walter Orzepowski, M.D.Anesthesiology Physician1669400669
  40. Norma Osborne, MDHospitalist Physician1710904784
  41. Roy Ostenson, D.C.Rehabilitation Chiropractor1235299751
  42. Rebecca Oszman, LATAthletic Trainer1861883316
  43. Nikki Ott, MS RD CDRegistered Dietitian1689719148
  44. Kenneth Otto, D.C.Chiropractor1770647521
  45. Khristine Otto, D.C.Chiropractor1902960750
  46. Levi Otto, D.CChiropractor1720789290
  47. Keith Oudenhoven, D.C.Chiropractor1629013297
  48. Arissa OukropRegistered Dietitian1316825805
  49. Timothy Ourada, D.C.Chiropractor1033131123
  50. Gbolahan Oyinloye, M.D., MHSPsychiatry Physician1255695888

The largest Wisconsin cities

  1. Milwaukee18,389
  2. Madison15,014
  3. Green Bay4,619
  4. La Crosse3,735
  5. Eau Claire3,085

All of Wisconsin →

How to read this directory

Appleton, Wisconsin appears in the CMS National Plan and Provider Enumeration System with 3,249 registered healthcare providers spanning 25 or more distinct NUCC-taxonomy specialties. This count includes every individual clinician who has applied for an NPI and listed a practice address in Appleton - physicians, dentists, nurse practitioners, physician assistants, chiropractors, physical therapists, optometrists, psychologists, podiatrists, and every other credentialed provider type CMS tracks. It does not measure hospital beds, urgent-care capacity, or whether a given clinic is accepting new patients; it measures the pool of professionals with current NPI enrollment and a Appleton practice location on file. Every figure is drawn from the federal National Provider Identifier Registry (CMS NPPES) - more than 7 million providers, maintained since May 2007, with 2024 Medicare Part D data, and, according to CMS, can be searched, compared, and traced in our methodology.

The provider mix in Appleton is weighted toward Physical Therapist (202 clinicians, followed by Professional Counselor with 193 and Nurse Practitioner with 155). That distribution reflects how NPPES records specialty: providers self-select a primary taxonomy code, so a family physician who also practices geriatrics will show up under whichever NUCC code they registered first. Relative to Wisconsin's population, Appleton reports roughly 55 providers per 100,000 residents using the state-level denominator, which is a rough proxy rather than a precise access-to-care measurement; the true catchment area of any {cityName} clinician extends beyond the municipal boundary.

Of Wisconsin's most common specialties, Student in an Organized Health Care Education/Training Program is the most prominent one with no provider currently listing a Appleton practice address, a coverage gap Appleton patients typically fill by traveling to a larger nearby hub.

For Appleton patients, this directory is most useful as a starting shortlist. Important: PlainDoctor is a directory of publicly available CMS government data, not a review site, a ranking, or medical advice. NPPES data is self-reported and refreshed monthly; call the practice directly to confirm the provider is still there, accepts your insurance, and is taking new patients.

For informational purposes only; this directory is not medical advice and not a substitute for checking a license. See also: how to find a doctor and how to verify one.

Common questions

How many doctors are in Appleton, WI?

There are 3,249 registered healthcare providers in Appleton, WI, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Appleton?

The most common specialties in Appleton are Physical Therapist, Professional Counselor, Nurse Practitioner, Family Nurse Practitioner, Clinical Social Worker. Physical Therapist has the most providers with 202.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov). Records are self-reported registrations, not licenses.

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.