NPPES file of Aug 9, 2026

Doctors and health care providers in Marshfield, WI

1,360 individual NPPES records list a practice address in Marshfield, 16th of 370 Wisconsin cities. The largest group is students in training: 79, 6% of the city's records, against 2% across Wisconsin. Page 18 of 28.

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

Marshfield in Wisconsin

  • Rank in Wisconsin16th of 370 cities by records
  • Share of the state1.2% of Wisconsin's records
  • Specialties present25 or more taxonomy codes
  • Top three groups14.5% of all records
  • Students in training rank4th of the 10 Wisconsin cities with the most

Compared with Wisconsin as a whole, Marshfield has 6.1× the state's share of anatomic pathology & clinical pathology physician records and 0.42× its share of professional counselor records.

Providers in Marshfield, alphabetically

  1. Vijaya Nirujogi, M.D.Surgery Physician1427068212
  2. Molly Noffke, OTOccupational Therapist1336931054
  3. Morgan Nordbeck, PAPhysician Assistant1013706993
  4. Ned Nordin, MDAnesthesiology Physician1114010592
  5. Kelly Noreen, NPNurse Practitioner1912094913
  6. Frank North, MDAnesthesiology Physician1730272113
  7. Jesus Nunez-Gornes, MDGastroenterology Physician1356564355
  8. John O'Brien, DDSGeneral Practice Dentistry1811208333
  9. Tiffany O'Brien, DDSGeneral Practice Dentistry1477878304
  10. Diarmuid O'Neill, MDAnesthesiology Physician1750460424
  11. Niav O'Neill, MDStudent in an Organized Health Care Education/Training Program1720825946
  12. Jeffrey O'ReillyRegistered Nurse1144687484
  13. Michael Oberg, MDPsychiatry Physician1659467819
  14. Kristen Obernberger, RNRegistered Nurse1699085753
  15. Rachel Occhiogrosso, MDHospitalist Physician1902581762
  16. Kate Oconnor, NPNurse Practitioner1619077351
  17. Katharine Odell, PHD, CCC-SLPSpeech-Language Pathologist1437264991
  18. Matthew Oelstrom, M.D.Pediatric Critical Care Medicine Physician1164748687
  19. Rebekah Oetken, R.N.Registered Nurse1518326784
  20. Kelsie-Marie Offenwanger, PSY.DClinical Child & Adolescent Psychologist1134645724
  21. Jane Ohde, DOSurgery Physician1164805560
  22. Adaora Okoli, MDInfectious Disease Physician1619536398
  23. Jennifer Okon, R.D., C.D.E., C.D.Registered Dietitian1386731982
  24. Asha Okorie, MDOphthalmology Physician1043478399
  25. Uzoma Okorie, MDPediatric Cardiology Physician1467619080
  26. Warren Olds, MDRadiation Oncology Physician1326146606
  27. Madeline Oleksy, LATAthletic Trainer1669603395
  28. Matthew OleyFamily Nurse Practitioner1376273474
  29. Gary Olsen, PHDClinical Neuropsychologist1437232154
  30. Jerry Olson, LPC CADC IIIProfessional Counselor1699849992
  31. John Olson, MDInternal Medicine Physician1194835249
  32. Kari Jo Olson, PTAPhysical Therapy Assistant1477789121
  33. Michael Olson, DDS MSDentist1750330155
  34. Theodore Olson, PHDPsychologist1912009614
  35. Tracy Olson, MSWSocial Worker1548362221
  36. Jeffrey Ongna, MS, LPCProfessional Counselor1932127511
  37. James Opitz, MDPediatrics Physician1659474286
  38. Christopher Ordonez, M.D.Pediatrics Physician1396192076
  39. John Orth, CRNACertified Registered Nurse Anesthetist1457580326
  40. Jill Orzehoskie, MPTPhysical Therapist1154790558
  41. P Osborne, C.O.Orthotist1730263757
  42. Anastasia Osipova, MD,PHDObstetrics & Gynecology Physician1073889382
  43. Keri Otte, MSW, APSWSocial Worker1598339178
  44. Gary Ovaska, C.O.Orthotist1972690980
  45. Elizabeth Palmini, MSWStudent in an Organized Health Care Education/Training Program1942003074
  46. Rinki Pandya, MDStudent in an Organized Health Care Education/Training Program1982276671
  47. Britney Papp, D.O.Pediatric Rehabilitation Medicine Physician1972954857
  48. Anjali ParekhPediatrics Physician1104654706
  49. Sherine Parimanath, MDInternal Medicine Physician1487764536
  50. Carol Park, L.P.T.Pediatric Physical Therapist1144425109

The largest Wisconsin cities

  1. Milwaukee18,389
  2. Madison15,014
  3. Green Bay4,619
  4. La Crosse3,735
  5. Appleton3,249

All of Wisconsin →

How to read this directory

Marshfield, Wisconsin appears in the CMS National Plan and Provider Enumeration System with 1,360 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 Marshfield - 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 Marshfield 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 Marshfield is weighted toward Student in an Organized Health Care Education/Training Program (79 clinicians, followed by Internal Medicine Physician with 62 and Physician Assistant with 56). 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, Marshfield reports roughly 23 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, Clinical Social Worker is the most prominent one with no provider currently listing a Marshfield practice address, a coverage gap Marshfield patients typically fill by traveling to a larger nearby hub.

For Marshfield 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 Marshfield, WI?

There are 1,360 registered healthcare providers in Marshfield, WI, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Marshfield?

The most common specialties in Marshfield are Student in an Organized Health Care Education/Training Program, Internal Medicine Physician, Physician Assistant, Nurse Practitioner, Physical Therapist. Student in an Organized Health Care Education/Training Program has the most providers with 79.

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.