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 45 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. Isabella LamarBehavior Technician1912835695
  2. Rebecca Lamarche, D.C.Chiropractor1700113578
  3. Ronald Lambert, M.A.Counselor1669731717
  4. Sydney LamierOccupational Therapist1972464493
  5. Arleen Lanci, PH.D.Clinical Psychologist1215703608
  6. Kiara LandinClinical Social Worker1255078309
  7. Lacey Landmeier, M.S. CF-SLPSpeech-Language Pathologist1730692468
  8. Jordynn Lane, LCSWClinical Social Worker1851091367
  9. Jonathan Langdon, OTR/LPediatric Occupational Therapist1386216182
  10. Gloria Lange, LCSWClinical Social Worker1770599532
  11. Johanna Lange, MDPhysical Medicine & Rehabilitation Physician1225123672
  12. Jennifer Langille, PSY.D.Clinical Psychologist1255796405
  13. Robert Langley, D.C.Chiropractor1235209362
  14. Jaime LangoschMental Health Counselor1033861042
  15. Rosa Lapietra, PSY.DClinical Psychologist1518129634
  16. Morta Lapkus, MDSurgery Physician1245689603
  17. Jimmie Laplant, DPMFoot & Ankle Surgery Podiatrist1477784841
  18. Hanna Laporte, PA-CPhysician Assistant1659196491
  19. Megan LappeBehavior Technician1659178739
  20. Ingrid LaraBehavior Analyst1194342014
  21. Mili LaraSchool Psychologist1750836250
  22. Megan LarabeeMental Health Counselor1689522328
  23. Dawn LarrySocial Worker1538051313
  24. Amy Larson, ATCAthletic Trainer1235108507
  25. Heidi Larson, DPMPodiatrist1134129778
  26. Jeffrey Larson, M.D.Family Medicine Physician1144516097
  27. Melissa LarsonDevelopmental Therapist1861071482
  28. Samuel LarsonBehavior Technician1275034969
  29. Erin Las, LCSWClinical Social Worker1205538147
  30. Catherine LashDevelopmental Therapist1962874982
  31. Venessa Laskey, PA-CMedical Physician Assistant1992732184
  32. Patricia Last, DNP, FNP-BCFamily Nurse Practitioner1508433376
  33. Rachael LastresSpeech-Language Pathologist1689077299
  34. Kari Lata, LMFT, LCPCMarriage & Family Therapist1386771863
  35. Hina LateefPharmacist1972479996
  36. Iram Lateef, PHARMDPharmacist1023393477
  37. Sajeel LatifPharmacist1659985372
  38. Matthew Lau, DPTPhysical Therapist1003546003
  39. Francesca LaubeBehavior Technician1740152727
  40. Abby LauerProfessional Counselor1386270486
  41. Jenna LaughlinBehavior Technician1477159945
  42. Charlene Laursen, M.S.Speech-Language Pathologist1578699567
  43. Theresa Lauten, SLPSpeech-Language Pathologist1992901193
  44. Elitza Lauterwasser, LCPCProfessional Counselor1679822464
  45. Anthony Lavacca, D.M.D.Prosthodontics1952511602
  46. Olivia LavallieProfessional Counselor1306708417
  47. Adriana LavianoInterpreter1700049681
  48. Danielle Lavin, PA-CPhysician Assistant1881067999
  49. Karolyn Law, M.D.Pediatrics Physician1093788804
  50. Lance Law, D.M.D.Dentist1265544712

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.