Internal Medicine, Infectious Disease
Dr. DARA GRENNAN
Identity confirmed via CMS NPPES · September 30, 2026 · A directory match is not a coverage approval.
Is this your practice? This listing was imported from public provider identity data (CMS NPPES) and has not yet been claimed. Claim this listing to confirm the practice details. Plan acceptance stays unpublished until the practice reports it.
Public record
NPI 1518282938 · enumerated 2010-03-29 · record updated 2021-04-26. Source: CMS NPPES. A listing is not a TRICARE network approval.
NPPES recordGoogle Maps Apple Maps OpenStreetMap
Addresses and phones
- Practice location 403 E 1ST ST, DIXON, IL, 61021 (815) 285-5629 Fax (815) 285-5634 Google Maps Apple Maps OpenStreetMap
- Mailing address 680 N LAKE SHORE DR, CHICAGO, IL, 60611-4546 (312) 956-8686 Google Maps Apple Maps OpenStreetMap
Specialties
- Internal Medicine 207R00000X · License 036-137502 IL
- Hospitalist 208M00000X · License 8153445 UT
- Hospitalist 208M00000X · License 36.137502 IL
- Internal Medicine, Infectious Disease 207RI0200X · Primary · License 036-137502 IL
In this directory
Locations and evidence
-
Practice location
DIXON, IL, 61021
Accepting new patientsNot reportedCMS NPPES · September 30, 2026
Plan acceptance
- No published plan acceptance yet. Confirm directly with the practice, or claim this listing if it's yours.