NPPES file of Aug 9, 2026

Doctors and health care providers in Johnston, IA

524 individual NPPES records list a practice address in Johnston, 18th of 215 Iowa cities. The largest group is speech-language pathologist: 100, 19% of the city's records, against 2% across Iowa. Page 11 of 11.

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

The 8 largest groups in Johnston

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

Johnston in Iowa

  • Rank in Iowa18th of 215 cities by records
  • Share of the state1.1% of Iowa's records
  • Specialties present25 or more taxonomy codes
  • Top three groups40.3% of all records
  • Speech-Language Pathologist rank1st of the 10 Iowa cities with the most

Compared with Iowa as a whole, Johnston has 8.4× the state's share of speech-language pathologist records and 0.46× its share of family nurse practitioner records.

Providers in Johnston, alphabetically

  1. Kaitlyn WellsBehavior Analyst1891625455
  2. Janelle Wensler, PTAPhysical Therapy Assistant1649414178
  3. Melanie Wenzel, MSW, LISWClinical Social Worker1528297033
  4. Deborah Wheeler, COTA-LOccupational Therapy Assistant1457567232
  5. Amanda WillemsOccupational Therapist1780170308
  6. Alexis WilliamsBehavior Technician1366392110
  7. Kaitlyn WilliamsOccupational Therapist1225600117
  8. Nicole Williamson, MS, CCC-SLPSpeech-Language Pathologist1013137496
  9. Emily WilsonSpeech-Language Pathologist1205575107
  10. Lindsay Wilson, D.C.Chiropractor1821368275
  11. Melissa Windhorst, MS, CCC-SLPSpeech-Language Pathologist1649486424
  12. Erika Wold-Blakeley, M.A., BCBA, LBABehavior Analyst1053185330
  13. Olivia Wolf, M.A.Speech-Language Pathologist1366995045
  14. Molly Wuebker, OTD, OTR/LOccupational Therapist1306137971
  15. Lauren WyllieOccupational Therapist1730751629
  16. Yimin Xu, L. AC.Acupuncturist1972079200
  17. Soo-Jee YiSpeech-Language Pathologist1609266881
  18. Whitney Yoder, OTDOccupational Therapist1609504216
  19. Danielle Yonemura, ARNPFamily Nurse Practitioner1124992110
  20. Erin Young, LMSWClinical Social Worker1396585311
  21. Taylor Zaun, LMFTMarriage & Family Therapist1821766932
  22. Edina ZenkovicMental Health Counselor1316719297
  23. Amy Ziegenhorn, LMHCMental Health Counselor1174956304
  24. Jennifer ZolicofferBehavior Analyst1457995797

The largest Iowa cities

  1. Iowa City7,163
  2. Des Moines5,538
  3. Cedar Rapids2,949
  4. West Des Moines2,201
  5. Davenport2,058

All of Iowa →

How to read this directory

Johnston, Iowa appears in the CMS National Plan and Provider Enumeration System with 524 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 Johnston - 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 Johnston 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 Johnston is weighted toward Speech-Language Pathologist (100 clinicians, followed by Occupational Therapist with 66 and Physical Therapist with 45). 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 Iowa's population, Johnston reports roughly 16.3 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.

For Johnston 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 Johnston, IA?

There are 524 registered healthcare providers in Johnston, IA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Johnston?

The most common specialties in Johnston are Speech-Language Pathologist, Occupational Therapist, Physical Therapist, Chiropractor, Mental Health Counselor. Speech-Language Pathologist has the most providers with 100.

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.