Dara Grennan, MD

Addiction Medicine · Internal Medicine · Hospital Medicine · Infectious Disease

16+ years in practiceNPI: 1518282938Licensed in ILLicensed in UT

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Credentials & Recognition

Specialties

Addiction MedicineInternal MedicineHospital MedicineInfectious Disease

NPI sub-specialties

Internal Medicine207R00000X

Hospitalist208M00000X

Hospitalist208M00000X

Internal Medicine, Infectious Disease207RI0200X

Practice Signals

Editorial signals beyond credentials. Patient transparency over opacity. See methodology.

Mid-Level (PA/NP) Use

Doctor-led visits

Years in Practice

16+ years

Estimated from NPI enumeration date

Featured in PBCMMG Rankings

#33

Top Infectious Disease Doctors in Utah, 2026

Infectious Disease · Utah · 2026

Frequently Asked Questions about Dr. Dara Grennan, MD

Where does Dr. Dara Grennan, MD practice?+
Dr. Dara Grennan, MD practices in Illinois, IL. 403 E 1ST ST DIXON, IL 61021.
What is Dr. Dara Grennan, MD's phone number?+
Dr. Dara Grennan, MD's practice phone is 815-285-5629. Office contact information is verified on the PBCMMG profile.
What does Dr. Dara Grennan, MD specialize in?+
Dr. Dara Grennan, MD's primary specialty is Addiction Medicine, with additional focus on Internal Medicine, Hospital Medicine, Infectious Disease.
Is Dr. Dara Grennan, MD board certified?+
Board certification status for Dr. Dara Grennan, MD has not been verified in the data sources PBCMMG uses (ABMS, state medical boards). The PBCMMG profile shows their current credential set.
How long has Dr. Dara Grennan, MD been practicing?+
Dr. Dara Grennan, MD has been in active practice for 16+ years, based on NPI enumeration and state licensing records.
What is Dr. Dara Grennan, MD's NPI number?+
Dr. Dara Grennan, MD's National Provider Identifier (NPI) is 1518282938, registered in the federal NPPES registry.

Profile maintained by Palm Beach County Medical Media Group, Inc. | Data verified from public registries (NPPES, ABMS, state medical boards). Methodology · Editorial Standards

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