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 31 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. Solomon Okai, M.D.Internal Medicine Physician1992815088
  2. Julianne OlivieriBehavior Technician1497232771
  3. Daniel Oller, D.C.Chiropractor1790066884
  4. Joshua OllswangSocial Worker1700558129
  5. Benjamin OlsonMental Health Counselor1881433126
  6. Louisa Olushoga, M.D.Psychiatry Physician1386025088
  7. Kailey OlzackClinical Child & Adolescent Psychologist1003770371
  8. Oluwalade OmobaBehavior Technician1144089418
  9. Deniz OncelStudent in an Organized Health Care Education/Training Program1902769987
  10. Anita Ong, M.D.Internal Medicine Physician1699828715
  11. Kelly Opron, D.C.Rehabilitation Chiropractor1306199047
  12. Katarzyna OrczykMental Health Counselor1952080749
  13. Erin Orentas, PSYDClinical Psychologist1801604251
  14. Delilah OrizabaClinical Social Worker1619610763
  15. Fatima OrtizBehavior Technician1366254724
  16. Linda Oster, DDSGeneral Practice Dentistry1851450779
  17. Adrienne Otkins, LCSWClinical Social Worker1811197833
  18. Rami OubariStudent in an Organized Health Care Education/Training Program1295308898
  19. Christopher Oustwani, M.D.Internal Medicine Physician1497193411
  20. Kelly Owen, LSWClinical Social Worker1144167248
  21. Quinlan OwenMarriage & Family Therapist1184471161
  22. Ina Owens, LCSWClinical Social Worker1427334622
  23. Emily Padilla, MT-BCMusic Therapist1578271250
  24. Anna Padron Sikora, LCSWClinical Social Worker1457496036
  25. Aeri PaekFamily Medicine Physician1366899619
  26. Natalie Pagan, M.A.Mental Health Counselor1588980916
  27. Hazel PagazaBehavior Technician1043926249
  28. Elizabeth Page, RDN, CNSC, LDNRegistered Dietitian1689184111
  29. Marion Page, MDPsychiatry Physician1912060765
  30. Michael Palash, D.O.Family Medicine Physician1881048767
  31. Spencer Palmer, MSW, LSWSocial Worker1730027475
  32. Lynn Palmgren, LAC., DIPL. OMAcupuncturist1114348372
  33. Kristin PalmsianoSocial Worker1265043269
  34. Anjali Pandit, PH.D, MPHClinical Psychologist1689112096
  35. Ruoyu Pang, D.D.S., PH.D.General Practice Dentistry1104259407
  36. Melanie PangalilinganBehavior Technician1336640598
  37. Veronica Pappas, NP-CFamily Nurse Practitioner1285047647
  38. Bharat Parekh, M.D.Internal Medicine Physician1689610024
  39. Sara Parilla, L.C.S.W.Clinical Social Worker1699786384
  40. Jazmine ParkerBehavior Technician1568267680
  41. Rebecca Parker, SLPSpeech-Language Pathologist1235442674
  42. Steven Parker, LMFTMarriage & Family Therapist1255348611
  43. Natalie Parker-Renfroe, MDPediatrics Physician1851334155
  44. Shanli Parnia, M.D.Internal Medicine Physician1427612738
  45. Tamika ParteeBehavior Technician1104640705
  46. Cristian Partida, PMHNP-BCPsychiatric/Mental Health Nurse Practitioner1710715404
  47. Sudheer Paruchuri, MDVascular & Interventional Radiology Physician1245221837
  48. William Pasola, PSYDClinical Psychologist1437834363
  49. Gloria Passalacqua, MA LCPCProfessional Counselor1023155744
  50. Brina Patel, PA-CPhysician Assistant1992654693

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.