Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. Jonathan Warren, MD

Individual provider Internal Medicine Physician · NPI 1871519124

Dr. Jonathan Warren, MD is an Internal Medicine in Joliet, Illinois. Graduated from University of Chicago, Pritzker School of Medicine in 1981, 45 years ago. Practices as a sole proprietor, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in Illinois.

Years since qualifying
45
Trained at
University of Chicago, Pritzker School of Medicine
Licensed in
IL
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

2201 Glenwood Ave
Joliet, IL 60435-5574
Phone: (815) 773-9090
Fax: (855) 705-5544
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 5999 New Wilke Rd Ste 107, Rolling Meadows, IL 60008-4501 — (847) 797-1933

Specialties & licences

Sleep Medicine (Internal Medicine) Physician (primary) Taxonomy 207RS0012X · Licence 036104101 (IL)
Internal Medicine Physician Taxonomy 207R00000X · Licence 036-104101 (IL)

Record details

NPI number1871519124
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJuly 13, 2006
Last updated in NPPESMarch 3, 2026
Certification dateMarch 3, 2026
Mailing address2201 Glenwood Ave, Joliet, IL 60435-5574

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Medical schoolUNIVERSITY OF CHICAGO, PRITZKER SCHOOL OF MEDICINE
Graduated 1981 (45 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

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