NPPES file of Aug 9, 2026

Doctors and health care providers in Oak Park, IL

2,307 individual NPPES records list a practice address in Oak Park, 15th of 541 Illinois cities. The largest group is clinical social worker: 281, 12% of the city's records, against 6% across Illinois. Page 30 of 47.

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

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

The 8 largest groups in Oak Park

  1. Clinical Social Worker281
  2. Behavior Technician240
  3. Mental Health Counselor138
  4. Professional Counselor124
  5. Physical Therapist106
  6. Family Medicine Physician86
  7. Social Worker83
  8. Clinical Psychologist83

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

Oak Park in Illinois

  • Rank in Illinois15th of 541 cities by records
  • Share of the state1% of Illinois's records
  • Specialties present25 or more taxonomy codes
  • Top three groups28.6% of all records
  • Clinical Social Worker rank4th of the 10 Illinois cities with the most

Compared with Illinois as a whole, Oak Park has 3× the state's share of acupuncturist records and 0.33× its share of student in an organized health care education/training program records.

Providers in Oak Park, alphabetically

  1. Tabitha NashSocial Worker1417336538
  2. Jaslyn NavartteMental Health Counselor1659031847
  3. Cy Navratil, NCCMental Health Counselor1811867955
  4. Erica Negrete-SassolinoClinical Social Worker1699317297
  5. Hailey Nelson, MT-BCMusic Therapist1093442360
  6. Madeline NelsonClinical Social Worker1619527561
  7. Martin NeriaBehavior Technician1275366189
  8. Ulrike Neubert, PHDClinical Psychologist1285599381
  9. Autumn Neuharth, PTPhysical Therapist1841737129
  10. Mary Jane Neumann, L.AC.Acupuncturist1538508940
  11. Alondra NevarezBehavior Analyst1740937143
  12. Kurt Neven, PHARMDPharmacist1821444332
  13. Jonathan NewtonBehavior Technician1023641479
  14. Hoang Nguyen, MDFamily Medicine Physician1730818865
  15. Julie Nicholson, MSW, MPASocial Worker1316229263
  16. William NicksonBehavior Technician1164352811
  17. Kristen NicolosiMental Health Counselor1588079644
  18. Sarah NiehoffBehavior Analyst1043540024
  19. Christina NiklasRegistered Dietitian1952789919
  20. Hannah Nikolich, DPTPhysical Therapist1154991883
  21. James Nitti, M.D.Obstetrics & Gynecology Physician1194106872
  22. Daniella Nitzoy, MOTR/LPediatric Occupational Therapist1902365414
  23. Christina Nixon, COTA/LOccupational Therapy Assistant1083858641
  24. Christine Nolan, CADCProfessional Counselor1083562409
  25. Meghan NolanLactation Consultant (Registered Nurse)1538978150
  26. Daniel Noonan, M.D.Emergency Medicine Physician1669404620
  27. Erica Norman, M.S. CCC-SLPSpeech-Language Pathologist1609318724
  28. Philippa Norman, MD, MPHPreventive Medicine/Occupational Environmental Medicine Physician1609905348
  29. Ethan Norwood, LCSWClinical Social Worker1083392336
  30. Ilinka Novakovic, MSWSocial Worker1578777900
  31. Carly Novoselsky, LCPC, CADCAddiction (Substance Use Disorder) Counselor1942895743
  32. Bonnie Nowakowski, D.O.Internal Medicine Physician1932403656
  33. Gabriela Noyola, RBTBehavior Technician1215762323
  34. Anthony Nuval, MDEmergency Medicine Physician1508251109
  35. Izuchukwu Nwafo, M.DInternal Medicine Physician1952577819
  36. Chioma Nwaoha, PA-CMedical Physician Assistant1285418061
  37. Nancy O'Connell, RNRegistered Nurse1295304608
  38. Hannah O'Connor, LCSWClinical Social Worker1902438773
  39. Robert O'Connor, PH.D.Clinical Psychologist1134250152
  40. Raneen ObeidallahBehavior Technician1801622766
  41. Candice Oberlies, PA-CPhysician Assistant1598026536
  42. Mary Obeso, MDFamily Medicine Physician1760461818
  43. Adrian OchoaBehavior Technician1588166003
  44. Maureen Oconnor, M.S.W.Clinical Social Worker1447316443
  45. Holly Odean, A.T.,C.Athletic Trainer1114044948
  46. Kate OdomClinical Psychologist1306079504
  47. Kylii OdomBehavior Technician1649163288
  48. Jennifer Oh, LCPCProfessional Counselor1679718704
  49. Aaron Ohemeng, D.D.S.Dentist1639374242
  50. Maryam Ojulari, MDEmergency Medicine Physician1457091456

The largest Illinois cities

  1. Chicago63,379
  2. Springfield4,997
  3. Naperville4,634
  4. Peoria4,621
  5. Evanston4,013

All of Illinois →

How to read this directory

Oak Park, Illinois appears in the CMS National Plan and Provider Enumeration System with 2,307 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 Oak Park - 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 Oak Park 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 Oak Park is weighted toward Clinical Social Worker (281 clinicians, followed by Behavior Technician with 240 and Mental Health Counselor with 138). 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, Oak Park reports roughly 18.4 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 Oak Park 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 Oak Park, IL?

There are 2,307 registered healthcare providers in Oak Park, IL, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Oak Park?

The most common specialties in Oak Park are Clinical Social Worker, Behavior Technician, Mental Health Counselor, Professional Counselor, Physical Therapist. Clinical Social Worker has the most providers with 281.

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.