NPPES file of Aug 9, 2026

Doctors and health care providers in Oconomowoc, WI

506 individual NPPES records list a practice address in Oconomowoc, 39th of 370 Wisconsin cities. The largest group is professional counselor: 32, 6% of the city's records, against 4% across Wisconsin. Page 4 of 11.

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

The 8 largest groups in Oconomowoc

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

Oconomowoc in Wisconsin

  • Rank in Wisconsin39th of 370 cities by records
  • Share of the state0.4% of Wisconsin's records
  • Specialties present25 or more taxonomy codes
  • Top three groups17.6% of all records

Compared with Wisconsin as a whole, Oconomowoc has 4.2× the state's share of psychiatric/mental health nurse practitioner records and 0.55× its share of physical therapist records.

Providers in Oconomowoc, alphabetically

  1. Tamara Grissman, PA-CPhysician Assistant1093022519
  2. Susan Groehler, RNRegistered Nurse1942637210
  3. Kelly Groskopf, D.D.S.General Practice Dentistry1962850701
  4. John Gucciardi, M.D.Family Medicine Physician1760417430
  5. Angela GundersonSocial Worker1649691528
  6. Alecia Guttilla, CLDDoula1316686892
  7. Melissa Hackbarth, LPCMental Health Counselor1568180446
  8. Bethany Hafenstein-RiegeMental Health Counselor1699581975
  9. Samuel Hall, MDPsychiatry Physician1215497037
  10. Jerry Halverson, MDPsychiatry Physician1952360422
  11. Elizabeth Hamlin, MDPsychiatry Physician1134418981
  12. Kim Hannan, LPCProfessional Counselor1437469061
  13. Richard Hansen, MDHematology & Oncology Physician1164496162
  14. Bridgette Hanson, RNHome Health Registered Nurse1376865675
  15. James Harper, M.D.Emergency Medicine Physician1922132364
  16. Jamie Healy, LMTMassage Therapist1861017907
  17. Joshua Heinecke, O.D.Optometrist1285072686
  18. Camilla Heit, PTAPhysical Therapy Assistant1457859274
  19. Debbie Heitzer, RNCommunity Health Registered Nurse1265778021
  20. Tricia Helwig, MS, RD, CDRegistered Dietitian1538991161
  21. Julie Hester, MSWClinical Social Worker1730261694
  22. Joanne Heup, RNHome Health Registered Nurse1851561104
  23. Sherry Hildebrandt, RNCase Management Registered Nurse1164771499
  24. Timothy Hill, M.D.Emergency Medicine Physician1861478430
  25. Jennifer Hillmann, O.D.Optometrist1871511022
  26. Sharon Hirsch, M.D.Psychiatry Physician1730208406
  27. James Hishmeh, LCSW, CSAC, CSITClinical Social Worker1598230484
  28. Elisabeth Hobday, RNRegistered Nurse1427463488
  29. Susan Hoefs, CCSH, RPSGTHealth Educator1396427944
  30. Audra Hoffman, LMFTMarriage & Family Therapist1083152516
  31. Mark Hohenwald, CSWSocial Worker1215481403
  32. Lauren Hollandsworth, DOFamily Medicine Physician1760877559
  33. Raina Hollenbaugh, M.D.Anesthesiology Physician1437132248
  34. Charles Holsen, DDSDentist1881703965
  35. Mary Horner, NPFamily Nurse Practitioner1962717371
  36. Kayla Housh-Kornowski, LPCMental Health Counselor1073492971
  37. Mary Houston, RPHPharmacist1760099618
  38. Brooke Huckabay, LPCProfessional Counselor1871274241
  39. Emily Huenink, PT, DPTPhysical Therapist1083499883
  40. Jack Hutter, DPMPodiatrist1528029295
  41. Amie Jabang, APNPFamily Nurse Practitioner1760946628
  42. Danielle Jaeger, DPTPhysical Therapist1669953329
  43. Mary Frances Jahnke, DDSGeneral Practice Dentistry1902244163
  44. Lisa JamesProfessional Counselor1356805808
  45. Michael Janowak, MDOtolaryngology Physician1285601070
  46. Palmira Janusonis, M.D.Anesthesiology Physician1194708644
  47. Dale Johnson, MDFamily Medicine Physician1447211404
  48. Jacob Johnson, PHARMDPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1629673389
  49. Kendra Johnson, ATC, LATAthletic Trainer1407411861
  50. Jill Johnston, PTPhysical Therapist1194740696

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

Oconomowoc, Wisconsin appears in the CMS National Plan and Provider Enumeration System with 506 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 Oconomowoc - 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 Oconomowoc 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 Oconomowoc is weighted toward Professional Counselor (32 clinicians, followed by Mental Health Counselor with 30 and Pharmacist with 27). 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, Oconomowoc reports roughly 8.6 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 Oconomowoc practice address, a coverage gap Oconomowoc patients typically fill by traveling to a larger nearby hub.

For Oconomowoc 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 Oconomowoc, WI?

There are 506 registered healthcare providers in Oconomowoc, WI, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Oconomowoc?

The most common specialties in Oconomowoc are Professional Counselor, Mental Health Counselor, Pharmacist, Registered Nurse, Chiropractor. Professional Counselor has the most providers with 32.

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.