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

Ronald J Glas, MD

Individual provider Family Medicine Physician · NPI 1720075484

Ronald J Glas, MD is a Family Practice in Naperville, Illinois. Graduated from Northwestern University Feinberg Medical School in 1996, 30 years ago. Practices with Endeavor Health Medical Group, a 3,348-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Illinois.

Years since qualifying
30
Trained at
Northwestern University Feinberg Medical School
Licensed in
IL
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

1247 Rickert Dr Ste 201
Naperville, IL 60540-1008
Phone: (630) 357-7979
Fax: (630) 357-1047
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 036098149 (IL)

Record details

NPI number1720075484
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 28, 2005
Last updated in NPPESFebruary 23, 2021
Certification dateFebruary 23, 2021
Mailing address1247 Rickert Dr, Ste 201, Naperville, IL 60540-1008

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolNORTHWESTERN UNIVERSITY FEINBERG MEDICAL SCHOOL
Graduated 1996 (30 years in practice)
Group practice Endeavor Health Medical Group — 3348 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Other providers in Naperville