NPPES file of Aug 9, 2026

Doctors and health care providers in Chicago, IL

63,379 individual NPPES records list a practice address in Chicago, 1st of 541 Illinois cities. The largest group is clinical social worker: 4,368, 7% of the city's records, against 6% across Illinois. Page 178 of 1,268.

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 Chicago

  1. Clinical Social Worker4,368
  2. Students in training3,509
  3. Internal Medicine Physician2,867
  4. Physical Therapist2,639
  5. Professional Counselor2,405
  6. Mental Health Counselor2,130
  7. Pharmacist1,906
  8. Speech-Language Pathologist1,753

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

Chicago in Illinois

  • Rank in Illinois1st of 541 cities by records
  • Share of the state26.4% of Illinois's records
  • Specialties present25 or more taxonomy codes
  • Top three groups17% of all records
  • Clinical Social Worker rank1st of the 10 Illinois cities with the most

Compared with Illinois as a whole, Chicago has 2× the state's share of student in an organized health care education/training program records and 0.54× its share of behavior technician records.

Providers in Chicago, alphabetically

  1. Brian CaseyClinical Social Worker1316315138
  2. Christine Casey, PTAPhysical Therapy Assistant1255457925
  3. David CaseyStudent in an Organized Health Care Education/Training Program1568179075
  4. Dina Casey, DMDGeneral Practice Dentistry1750054656
  5. Jessica Casey, MDPhysical Medicine & Rehabilitation Physician1093334815
  6. Katherine Casey, RDRegistered Dietitian1548132970
  7. Mary Casey, DPTPhysical Therapist1003258765
  8. Maureen Casey, RPHPharmacist1902070170
  9. Paul Casey, MDEmergency Medicine Physician1639389992
  10. Rachel CaseyMarriage & Family Therapist1649824558
  11. Sara Casey, RDRegistered Dietitian1417585381
  12. Crystal Cash, MDFamily Medicine Physician1740293364
  13. Hanna Cash, APRN, CNPNurse Practitioner1548049158
  14. Jody Cash, LCSWClinical Social Worker1629813167
  15. Rachel CashSocial Worker1821872375
  16. Stacy Cash, M.A., CCC-SLPSpeech-Language Pathologist1578183158
  17. Nailah Cash-O'Bannon, M.DFamily Medicine Physician1144755323
  18. Alisun CashillWomen's Health Nurse Practitioner1194688697
  19. Kathryn Cashin, RNRegistered Nurse1184069841
  20. Lena Casimir, D.D.SGeneral Practice Dentistry1265560593
  21. Celia CasimiroNurse's Aide1144771429
  22. Eric Casinelli, MDStudent in an Organized Health Care Education/Training Program1487355384
  23. Corinne Casino, MDObstetrics & Gynecology Physician1992292031
  24. Kathryn Caskey, PA-CPhysician Assistant1275878258
  25. Rachel Caskey, MD, MAPPInternal Medicine Physician1558306787
  26. Elizabeth CaslineClinical Psychologist1265777676
  27. Laura CasonRegistered Dietitian1063870327
  28. Kristina Casos, MDOrthopaedic Surgery Physician1558111047
  29. Jennifer Casparino, MD, MPHInternal Medicine Physician1982490009
  30. Amy Casper, RDRegistered Dietitian1124299987
  31. Angela Casper, LCSWClinical Social Worker1093120149
  32. Kathleen Casper, D.O.Family Medicine Physician1912004912
  33. Elizabeth Caspers, LCSWClinical Social Worker1609222413
  34. Kristen CaspersonNeurology Physical Therapist1124438429
  35. Kathryn Cassaday, OTR/LOccupational Therapist1376890137
  36. Kelcey Cassady, APNNeonatal Nurse Practitioner1700507464
  37. Elizabeth CassellOccupational Therapy Assistant1205520665
  38. Caitlin CassidyOccupational Therapist1851641633
  39. Emily Cassidy, LCPCCounselor1467037226
  40. Gwen Cassidy, APNAcute Care Nurse Practitioner1588063994
  41. Kacie Cassidy, OTR/LOccupational Therapist1821548959
  42. Michael Cassidy, MDPlastic Surgery Physician1669173985
  43. Robyn CassidyFamily Nurse Practitioner1386391936
  44. Catherine Cassingham, LCSWClinical Social Worker1598245532
  45. Hayley Cassingham, MSGenetic Counselor (M.S.)1134641566
  46. Nicole CastPediatrics Physician1922893783
  47. Shaina Castan, LCSWClinical Social Worker1740850544
  48. Adrian Castaneda, PHARMDPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1821964321
  49. Alicia CastanedaBehavior Technician1114600681
  50. Andy Castaneda, MDStudent in an Organized Health Care Education/Training Program1548749633

The largest Illinois cities

  1. Springfield4,997
  2. Naperville4,634
  3. Peoria4,621
  4. Evanston4,013
  5. Rockford3,893

All of Illinois →

How to read this directory

Chicago, Illinois appears in the CMS National Plan and Provider Enumeration System with 63,379 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 Chicago - 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 Chicago 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 Chicago is weighted toward Clinical Social Worker (4,368 clinicians, followed by Student in an Organized Health Care Education/Training Program with 3,509 and Internal Medicine Physician with 2,867). 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, Chicago reports roughly 505 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 Chicago 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 Chicago, IL?

There are 63,379 registered healthcare providers in Chicago, IL, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Chicago?

The most common specialties in Chicago are Clinical Social Worker, Student in an Organized Health Care Education/Training Program, Internal Medicine Physician, Physical Therapist, Professional Counselor. Clinical Social Worker has the most providers with 4,368.

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.