Healthcare Providers & Facilities in Oak Brook, IL
Public healthcare directory of 945 individual practitioners and 375 healthcare facilities located in Oak Brook, Illinois.
Medical Specialties in Oak Brook
Select a specialty to view practitioner listings, practice locations, and qualifications.
Physical Therapist
Social Worker - Clinical
Occupational Therapist
Psychiatry & Neurology - Psychiatry
All Specialties in Oak Brook
Specialties with enough public records for a comparison with U.S. figures, plus the 60 largest of 106 more with at least one listed practitioner. Number of practitioners in brackets.
Allopathic & Osteopathic Physicians
- Anesthesiology (11)
- Anesthesiology - Pain Medicine (2)
- Dermatology (2)
- Emergency Medicine (2)
- Family Medicine (8)
- General Practice (9)
- Hospitalist (3)
- Internal Medicine (15)
- Internal Medicine - Adolescent Medicine (4)
- Internal Medicine - Cardiovascular Disease (2)
- Internal Medicine - Endocrinology, Diabetes & Metabolism (2)
- Internal Medicine - Hematology & Oncology (4)
- Internal Medicine - Nephrology (2)
- Obstetrics & Gynecology (5)
- Obstetrics & Gynecology - Reproductive Endocrinology (2)
- Pediatrics (4)
- Pediatrics - Neonatal-Perinatal Medicine (16)
- Psychiatry & Neurology - Neurology (3)
- Radiology - Diagnostic Radiology (10)
- Surgery (7)
Behavioral Health & Social Service Providers
- Behavior Analyst (5)
- Behavior Technician (55)
- Clinical Neuropsychologist (7)
- Counselor (12)
- Counselor - Addiction (Substance Use Disorder) (2)
- Counselor - Mental Health (48)
- Counselor - Professional (79)
- Marriage & Family Therapist (8)
- Psychologist (12)
- Psychologist - Clinical (54)
- Psychologist - Clinical Child & Adolescent (6)
- Social Worker (15)
Chiropractic Providers
- Chiropractor (27)
Dental Providers
Dietary & Nutritional Service Providers
Eye and Vision Services Providers
- Optometrist (11)
Nursing Service Providers
Other Service Providers
- Acupuncturist (2)
- Specialist (6)
Pharmacy Service Providers
Physician Assistants & Advanced Practice Nursing Providers
Respiratory, Developmental, Rehabilitative and Restorative Service Providers
Speech, Language and Hearing Service Providers
Student, Health Care
Featured Healthcare Providers in Oak Brook
Practitioner profiles in Oak Brook, IL with recent CMS Medicare or Open Payments data.
Dr. Dylan Jurcik , DPT
Physical Therapist
Anuradha Spain , MA, LCSW
Social Worker - Clinical
Dr. Thomas Keane , MD
Radiology - Vascular & Interventional Radiology
Mark Gannon , PT
Physical Therapist
Dr. Nicholas Gius , DNP, CRNA
Nurse Anesthetist, Certified Registered
Dr. Kevin Connolly , DC
Chiropractor
Largest Cities in Illinois
Other Illinois cities with a full directory, by the number of active practitioners listed in NPPES.
How Oak Brook compares with the U.S.
945 active clinicians list a practice address in Oak Brook, IL in the NPI registry.
Oak Brook has fewer than 10,000 residents, so rates per 100,000 people change a lot with each clinician and are not compared here.
91% of clinicians in Oak Brook listed in the CMS Medicare file (222 of 243) accept Medicare assignment. That is similar to the Illinois share of 92%.
Only 243 of 945 active clinicians in Oak Brook appear in the CMS Medicare file, so this share describes that smaller group.
What is Medicare assignment?
A clinician who accepts Medicare assignment agrees to take the Medicare-approved amount as full payment for services that Original Medicare covers. You usually still pay your deductible and coinsurance. This comes from the CMS Doctors and Clinicians file and applies to Original Medicare only. Medicare Advantage plans have their own provider networks. It does not show whether a clinician is taking new patients.
Some clinicians are listed as "may accept assignment," which means they can decide case by case. Clinicians without an assignment flag, or who are not in the CMS file, are not counted as accepting assignment. That does not mean they refuse Medicare. Ask the office before your visit.
26% of clinicians in Oak Brook listed in the CMS Medicare file (63 of 243) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is higher than the Illinois share of 20%.
About the telehealth indicator
The telehealth indicator comes from CMS. It marks clinicians whose recent paid Medicare claims include services delivered by telehealth. It means a clinician has provided some services by telehealth, not that every visit can be done online. A clinician without the indicator may still offer telehealth, for example to patients who are not on Medicare. Ask the office which visits can be done by video or phone.
These figures summarize public federal data. They do not measure quality of care, appointment availability, or whether a clinician accepts your insurance or new patients. Registry addresses can be out of date. Please confirm details directly with the office and your plan. This information is not medical advice.
Prepared by T-MedInfo from NPPES, CMS and U.S. Census Bureau data. Questions or corrections: support@true-medinfo.com · Methodology
Sources: Clinician counts and practice addresses: NPPES NPI Registry, Centers for Medicare & Medicaid Services (CMS), data as of August 2026. Medicare assignment and telehealth indicators: CMS Doctors and Clinicians National Downloadable File.
Oak Brook CMS Healthcare & Financial Disclosures
CMS Part D Prescribers (2024), Open Payments (program year 2025), Medicare (PECOS) enrollment and Part B (2024) data for Oak Brook, IL
Healthcare operations in Oak Brook, IL encompass 945 active individual practitioners and 375 registered medical facilities across 110 clinical specialties.
According to CMS Medicare Part D analytics for 2024, prescription drug volume in Oak Brook accounts for $7.4 Million across 39,348 prescription claims. 387 local practitioners have a Medicare (PECOS) enrollment record. Open Payments data for program year 2025 list $0.3 Million in payments reported by companies to 85 local practitioners; a reported payment does not necessarily mean the financial relationship is improper.