NPPES file of Aug 9, 2026

Doctors and health care providers in Marshalltown, IA

443 individual NPPES records list a practice address in Marshalltown, 21st of 215 Iowa cities. The largest group is mental health counselor: 39, 9% of the city's records, against 5% across Iowa. Page 8 of 9.

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

Marshalltown in Iowa

  • Rank in Iowa21st of 215 cities by records
  • Share of the state0.9% of Iowa's records
  • Specialties present25 or more taxonomy codes
  • Top three groups22.8% of all records

Compared with Iowa as a whole, Marshalltown has 3.1× the state's share of registered dietitian records and 0.70× its share of clinical social worker records.

Providers in Marshalltown, alphabetically

  1. Carolyn Siskoff, DPTPhysical Therapist1508197310
  2. Jennifer Sitter, DPTPhysical Therapist1649654922
  3. Tate SkartvedtMental Health Counselor1922813302
  4. Ian Slagle, DCChiropractor1396458618
  5. Barbara Sloan, LISWClinical Social Worker1194824581
  6. Anessa SmithMental Health Counselor1225841281
  7. Larissa Smith, ARNPNurse Practitioner1568255792
  8. Mark Smith, LISWAddiction (Substance Use Disorder) Counselor1841792785
  9. Misty Smith, BACounselor1154742989
  10. Todd Smith, ATCAthletic Trainer1710997226
  11. Amanda Snider, TCADCAddiction (Substance Use Disorder) Counselor1588396261
  12. Janelle Snyder, LATPhysical Therapy Assistant1538189758
  13. Sarah SorsenRadiologic Technologist1528680071
  14. Kathleen Soseman, OTD OTR/L CHTOccupational Therapist1245673987
  15. Viegoun Soukhavong, RNRegistered Nurse1891361515
  16. Christopher Sparks, LISWClinical Social Worker1780816751
  17. Jamie Stalzer, PHARMD.Pharmacist1801428149
  18. Jenna StarkAddiction (Substance Use Disorder) Counselor1710652607
  19. Sherri Stebniski, PAPhysician Assistant1902852254
  20. Caylan Steed, OTR/LOccupational Therapist1356965966
  21. Douglas Steenblock, M.D., PSYCHIATRISTPsychiatry Physician1104891191
  22. Megan Steim, TLMHCMental Health Counselor1629787262
  23. Rebecca SteimelPhysical Therapist1942857271
  24. Brian Steiner, PSY.D.Clinical Psychologist1447391388
  25. Rylie Steinkamp, LMSWSocial Worker1841124328
  26. Eric Stenberg, DOFamily Medicine Physician1154311256
  27. Peter Sterzing, O.D.Optometrist1447385380
  28. McKenzie Stevens, MNTRegistered Dietitian1235596370
  29. Heather Stevenson, FNP-BC, ARNPFamily Nurse Practitioner1992326607
  30. Andrea Storjohann, ARNP, CADCPsychiatric/Mental Health Nurse Practitioner1942745377
  31. Jimmie Storms, DPTPhysical Therapist1629356605
  32. Rylee StoutOccupational Therapy Assistant1801678867
  33. Michael Stufflebeam, D.D.SPediatric Dentistry1700950722
  34. Linda Swafford, RPHPharmacist1114249919
  35. Nathan SwaimAthletic Trainer1831604941
  36. Randy Swarts, DDSGeneral Practice Dentistry1023010170
  37. Amy Swigart, PHARM.DPharmacist1205059656
  38. Timothy Swinton, M.D.Family Medicine Physician1245388743
  39. Salahuddin Syed, MDAnatomic Pathology & Clinical Pathology Physician1851379523
  40. Christine Taylor, P.A.Physician Assistant1134277759
  41. Stephen Thies, DDSDentist1588769939
  42. Wendy Thiessen, M.D.Pediatrics Physician1306827035
  43. David Thomas, M.D.Family Medicine Physician1295716934
  44. Faith Thompson, MDPediatrics Physician1134788847
  45. Brent Thornton, O.D.Optometrist1841545225
  46. Virginia Tidriri, MDInternal Medicine Physician1487753232
  47. Kay Tierney, R.D.Registered Dietitian1336363712
  48. Chelsi Toeun, ARNPEmergency Medicine Physician1417818402
  49. John Trible, MDOphthalmology Physician1104818939
  50. Melinda Tullis, TCADCAddiction (Substance Use Disorder) Counselor1063881175

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

Marshalltown, Iowa appears in the CMS National Plan and Provider Enumeration System with 443 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 Marshalltown - 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 Marshalltown 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 Marshalltown is weighted toward Mental Health Counselor (39 clinicians, followed by Physical Therapist with 38 and Pharmacist with 24). 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, Marshalltown reports roughly 13.8 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 Marshalltown 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 Marshalltown, IA?

There are 443 registered healthcare providers in Marshalltown, IA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Marshalltown?

The most common specialties in Marshalltown are Mental Health Counselor, Physical Therapist, Pharmacist, Registered Dietitian, Addiction (Substance Use Disorder) Counselor. Mental Health Counselor has the most providers with 39.

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.