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 47 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. Jacquelyn Levin, MSW, LCSWClinical Social Worker1538531678
  2. Brittany LewisBehavior Technician1255172607
  3. Tiffany LewisHealth & Wellness Coach1699556837
  4. Beata Lezerkiewicz, D.D.SDentist1861526899
  5. Mary Lhotak, PTPediatric Physical Therapist1598175937
  6. Masue Li, MDHospitalist Physician1730287376
  7. Yuk Li, MDDiagnostic Radiology Physician1871544239
  8. Julianne LiangPharmacist1659658458
  9. Christina LiberBehavior Technician1104564871
  10. Tammy LicataDevelopmental Therapist1023274081
  11. Lucia Licavoli, PH.D.Clinical Psychologist1992946156
  12. Francis Lichon, MDRheumatology Physician1437379435
  13. Julia Liebich, D.C.Chiropractor1427376110
  14. Robert Liebman, M.D.Diagnostic Radiology Physician1215912282
  15. Christina LiesAssistant Behavior Analyst1689164592
  16. Deborah Lillig, CD(DONA)Doula1497099865
  17. Jason LimPharmacist1053692558
  18. John Limanowski, DPMPodiatrist1356389332
  19. Ernest Lindell, M.D.Pediatric Orthopaedic Surgery Physician1003802810
  20. Mary Lindhartsen, MS, LCPCMental Health Counselor1457476517
  21. Cody Lindley, DDSGeneral Practice Dentistry1033763313
  22. Braden Lindmark, PT, DPTPhysical Therapist1760360234
  23. Dale Lipe, D.D.S.Orthodontics and Dentofacial Orthopedics Dentistry1598194276
  24. Carly Liskey, RBT-18-48477Behavior Technician1871084434
  25. Ann Marie Lisnich, D.D.S.Dentist1104121698
  26. Shane Liston, MOTOccupational Therapist1215422837
  27. Jessica Littlefield, LCSWClinical Social Worker1730216292
  28. Rebecca Litz, LCSWClinical Social Worker1659573160
  29. Kuei LiuPharmacist1861096927
  30. Li LiuAcupuncturist1558402297
  31. Libin LiuAcupuncturist1386277853
  32. Tao LiuPsychologist1154557510
  33. Mark Livak, MDEmergency Medicine Physician1548557481
  34. Diana Liz, PHARMDPharmacist1790007623
  35. Colleen LlacsaClinical Social Worker1124404454
  36. Eden Llewellyn, MMS PACPhysician Assistant1588093553
  37. Joyce Lo, M.D.Pediatrics Physician1780871426
  38. Raulie Lo, MDPediatrics Physician1396712220
  39. Timothy LoClinical Social Worker1578927216
  40. Jill Lobojko, LCSWClinical Social Worker1427974278
  41. Julee Lockard, MS, OTR/LOccupational Therapist1679863146
  42. Christian Locke, LCSWClinical Social Worker1407949720
  43. Catherine LockerdBehavior Analyst1609242841
  44. Samantha LockhartSpeech-Language Pathologist1225385636
  45. Karen Loftus, APNPediatric Nurse Practitioner1285620286
  46. Frances LogalboCounseling Psychologist1811711468
  47. Amy Logan, LMHC, LCPCMental Health Counselor1336924075
  48. Mary LogginsPharmacist1538761408
  49. Kurt Lohnes, LCSWClinical Social Worker1508963182
  50. John Lombardi, M.D.Orthopaedic Surgery Physician1467455139

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.