NPPES file of Aug 9, 2026

Clinical Psychologist in Illinois

3,947 NPPES records list clinical psychologist with a practice address in Illinois, 31 per 100,000 residents, the 8th highest rate of 51. Chicago and Evanston have the most; each record links to the provider's NPI and the Illinois license search. Page 53 of 79.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 103TC0700X · method

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

Chicago has the most, 1,478

  1. Chicago1,478
  2. Evanston158
  3. Naperville137
  4. Northbrook87
  5. Oak Park83

Clinical Psychologist records in Illinois

  1. John Noto, PH.D.Forest Park, IL 601301740215847
  2. Carly Novak, PSY.D.Skokie, IL 600771669750535
  3. Joseph Novak, PSY.D.Arlington Heights, IL 600051184795643
  4. Alexandra Novakovic, PH.D.Chicago, IL 606111043456825
  5. Jon NovotneyGlen Carbon, IL 620341922259621
  6. Carolyn Nowakowski, PSYDTinley Park, IL 604771881679637
  7. Joyce Nugent-Hirschbeck, PSY.D.Tinley Park, IL 604771699002212
  8. Ana Nunez, PSY. D.Chicago, IL 606571801056866
  9. Pierre Nunez, PH.D.Chicago, IL 606121285756940
  10. Jan Nussbaum, PH.D.Chicago, IL 606111902935885
  11. Karin Nussbaum, PH.D.Chicago, IL 606011417165242
  12. Savannah O'BrienChicago, IL 606101962180893
  13. Timothy O'Brien, PSYDChicago, IL 606431801449681
  14. Steven O'Connell, PHDDanville, IL 618321265541213
  15. Carol O'Connor, PH.D.Glenview, IL 600261043340847
  16. Robert O'Connor, PH.D.Oak Park, IL 603011134250152
  17. Daniel O'Grady, PH.D.Chicago, IL 606021821120031
  18. Susan O'Grady, PSY. D.Park Ridge, IL 600681366814758
  19. Alison O'Hara, PSYDChicago, IL 606401922439363
  20. Emily O'HaraNorth Chicago, IL 600641912547969
  21. Cathleen O'HareBurr Ridge, IL 605271568712982
  22. Karen O'Keeffe, PSY.D.Mundelein, IL 600601336525575
  23. Jean O'Mahoney, PH.D.Chicago, IL 606111144233529
  24. Julie O'Malley, PSY.D.Chicago, IL 606111417184821
  25. Essence O'NealGurnee, IL 600311104575398
  26. Melissa O'Sha, PH.D.Chicago, IL 606151639641020
  27. Reema Obaid Ross, PSY.D.Chicago, IL 606541578941530
  28. Katrina Obleada, PHDChicago, IL 606111669995650
  29. Linda Oconnell, PH.D.Chicago, IL 606011497148316
  30. Ellis Oconnor, PSYDHoffman Estates, IL 601691417818022
  31. Mary Odafe, PH.D.Chicago, IL 606071891564845
  32. Helen Odessky, PSY. D.Chicago, IL 606021134331192
  33. Kate OdomOak Park, IL 603021306079504
  34. Erin Odonohue, PSY.D.Long Grove, IL 600471245569268
  35. Lauren Oganovich, PSY.D.Oak Lawn, IL 604531245605831
  36. Julia Ogg, PHDSycamore, IL 601781811502347
  37. Laura Ogurek, PSY.D.Lake Villa, IL 600461487823209
  38. Israel Oler, PH.D.Deerfield, IL 600151972610285
  39. Susan Olesch, PSYDLake In The Hills, IL 601561225120405
  40. Megan Oliverio, PSY.D.Oak Brook, IL 605231356907042
  41. Bradley Olson, PSY.D.Arlington Heights, IL 600041366595282
  42. Denise Olson, PSY.D.Wheaton, IL 601891801052964
  43. Kerri Olson, PH.D.Chicago, IL 606541174765176
  44. Justine Olson- Pyter, PSYDLibertyville, IL 600481831526979
  45. Robert OltHavana, IL 626441386067213
  46. Janice Omalley, PSYDChicago, IL 606151487727020
  47. Wendy Oman, PSYDChicago, IL 606161235154477
  48. Jason Ong, PH.D.Chicago, IL 606121528260940
  49. Nneka Onyezia, PHDChicago, IL 606101811299308
  50. Brett Opelt, PHDChicago, IL 606071639798598

Source: CMS NPPES, primary taxonomy 103TC0700X: records by practice city and the list of records, file of Aug 9, 2026.

Illinois ranks 8 of 51 per resident

  1. Hawaii45
  2. New York34
  3. California32
  4. Illinois31
  5. Connecticut31
  6. Michigan30
  7. 50 states and D.C.20

Source: CMS NPPES, primary taxonomy 103TC0700X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

16.0% of these records appear in a Medicare file, against 12.2% nationally

A Medicare file here is Part D prescribing (2024), a MIPS score (2023), an Open Payments record (2024) or Medicare group billing (CMS Doctors and Clinicians). A record outside them may still see patients: these files cover Medicare only.

  1. Illinois16.0%
  2. United States12.2%

Clinical Psychologist records in Illinois, measured

  • In a Medicare file631 of 3,947 · 16.0% here, 12.2% nationally
  • In the CMS Doctors and Clinicians file1,081 · 27.4% here, 22.4% nationally
  • Not updated in five years or more2,674 · 67.7% here, 65.3% nationally
  • Median graduation year2004 · the 1,081 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 103TC0700X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

3,947 NPPES records list clinical psychologist (103TC0700X) as their primary taxonomy with a practice address in Illinois: 31 per 100,000 residents against 20 nationally (50 states and D.C.). Chicago has 1,478 of them (37%).

A record is a registration a provider made and keeps up to date: it shows neither that the provider is licensed nor that they still practice there. The state's own license search is the check.

States with a similar number

  1. Massachusetts3,185
  2. Florida2,980
  3. Michigan2,965
  4. Texas2,732

States with a similar rate per 100,000

  1. Connecticut30.8
  2. California32.5
  3. New York33.5
  4. Colorado28.1

The largest states

  1. California12,647
  2. New York6,558
  3. Massachusetts3,185
  4. Florida2,980
  5. Michigan2,965

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy; 2023 Census population estimates. A registry record is not a license.

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.