NPPES file of Aug 9, 2026

Doctors and health care providers in Naperville, IL

4,634 individual NPPES records list a practice address in Naperville, 3rd of 541 Illinois cities. The largest group is professional counselor: 329, 7% of the city's records, against 4% across Illinois. Page 31 of 93.

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

The 8 largest groups in Naperville

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

Naperville in Illinois

  • Rank in Illinois3rd of 541 cities by records
  • Share of the state1.9% of Illinois's records
  • Specialties present25 or more taxonomy codes
  • Top three groups19.4% of all records
  • Professional Counselor rank2nd of the 10 Illinois cities with the most

Compared with Illinois as a whole, Naperville has 2.1× the state's share of behavior analyst records and 0.54× its share of internal medicine physician records.

Providers in Naperville, alphabetically

  1. Allynda Hammond, NURSE PRACTITIONERFamily Nurse Practitioner1639737265
  2. Anna Hammond, PSY.D.Clinical Child & Adolescent Psychologist1356541353
  3. Sonia Hammond, OTOccupational Therapist1306261482
  4. Jordan Hammuck, OTR/LOccupational Therapist1629559497
  5. Fiori HamzaiMarriage & Family Therapist1679188650
  6. Alice Han, MDPediatrics Physician1255835757
  7. Cynthia Han, D.D.S.General Practice Dentistry1326117698
  8. David Han, MDEmergency Medicine Physician1073179388
  9. Erin Hankins, LCPCProfessional Counselor1083187660
  10. Keith Hanni, M.D.Anesthesiology Physician1699931832
  11. Jean Hannigan, LCPCProfessional Counselor1922123876
  12. Terri Hannon, APN-CNurse Practitioner1497965487
  13. Victoria Hanrahan, LSWSocial Worker1689191645
  14. Joel Hanson, DCChiropractor1790106383
  15. Alexander Hantel, MDHematology & Oncology Physician1083691349
  16. Claudia Hantel, LCSWClinical Social Worker1134309032
  17. Anand HaranStudent in an Organized Health Care Education/Training Program1033980396
  18. Lisa Hardekopf, LPCProfessional Counselor1922671528
  19. Vicki Hare, COTA/LOccupational Therapy Assistant1326323338
  20. Mohammed HarfoushPharmacist1740566967
  21. J. Preston Harley, PHDClinical Neuropsychologist1578598462
  22. Kelleigh Harman McIntosh, DPTPhysical Therapist1750101044
  23. Adrienne Harmon, MASTERS OF ARTSDevelopmental Therapist1588983506
  24. Amanda Harms, DPTPhysical Therapist1508115312
  25. Lee Harms, LCSWClinical Social Worker1700484847
  26. Jessica Harnish, NPFamily Nurse Practitioner1427453539
  27. Monica Harp, LSWSocial Worker1194273789
  28. Ashley HarperBehavior Technician1184108342
  29. Alexandra Harrer, OTR/LOccupational Therapist1205502150
  30. Joshua Harrington, PTAPhysical Therapy Assistant1871167379
  31. Lindsey Harrington, PSY.D.Clinical Psychologist1548401441
  32. Holly Harris, LCSWClinical Social Worker1679642656
  33. Jeanette HarrisSchool Registered Nurse1013462704
  34. Kevin Harris, M.D.Physical Medicine & Rehabilitation Physician1588856405
  35. Kyle Harris, LCPC, LPCProfessional Counselor1811602097
  36. John Harrow, PHDClinical Psychologist1134887516
  37. Kim Harshbarger, MA, CCC SLPSpeech-Language Pathologist1992884480
  38. Devyn Harter, PT, DPTPhysical Therapist1780249953
  39. Litzi Hartley, LCPCProfessional Counselor1073719407
  40. Michael Hartmann, MDEmergency Medicine Physician1013073253
  41. Deirdre HartnettPsychiatric/Mental Health Nurse Practitioner1639547672
  42. Michelle Hartnett, PA-CPhysician Assistant1942751664
  43. Magdalena Hartung, PHYSICAL THERAPYPhysical Therapist1003936394
  44. Jennifer Hartwig, M.A.Speech-Language Pathologist1215165196
  45. Susan Harvey, LCSWClinical Social Worker1285309666
  46. Jaclyn HarweyClinical Social Worker1528333226
  47. Maysa HasanSocial Worker1558231183
  48. Joseph Haselhorst, D.D.S.General Practice Dentistry1801901160
  49. Waddah Hashem, MDPediatrics Physician1093771875
  50. Firdaus Hashim, MDPain Medicine (Anesthesiology) Physician1497709059

The largest Illinois cities

  1. Chicago63,379
  2. Springfield4,997
  3. Peoria4,621
  4. Evanston4,013
  5. Rockford3,893

All of Illinois →

How to read this directory

Naperville, Illinois appears in the CMS National Plan and Provider Enumeration System with 4,634 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 Naperville - 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 Naperville 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 Naperville is weighted toward Professional Counselor (329 clinicians, followed by Clinical Social Worker with 307 and Physical Therapist with 263). 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 Illinois's population, Naperville reports roughly 36.9 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 Illinois's most common specialties, Student in an Organized Health Care Education/Training Program is the most prominent one with no provider currently listing a Naperville practice address, a coverage gap Naperville patients typically fill by traveling to a larger nearby hub.

For Naperville 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 Naperville, IL?

There are 4,634 registered healthcare providers in Naperville, IL, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Naperville?

The most common specialties in Naperville are Professional Counselor, Clinical Social Worker, Physical Therapist, Behavior Technician, Speech-Language Pathologist. Professional Counselor has the most providers with 329.

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.