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

Dr. Dara Grennan

Individual provider Internal Medicine Physician · NPI 1518282938

Dr. Dara Grennan is a Hospitalist in Dixon, Illinois. Qualified in 2007, 19 years ago. Practices with Northwestern Medical Faculty Foundation, a 4,394-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Illinois and Utah.

Years since qualifying
19
Licensed in
IL, UT
In the registry since
2010
Specialties on file
4

Practice location Address checks out

403 E 1st St
Dixon, IL 61021
Phone: (815) 285-5629
Fax: (815) 285-5634
Show map & directions

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

Additional practice locations (1)

  • 5121 S Cottonwood St, Salt Lake City, UT 84107-5701 — (801) 507-4384

Specialties & licences

Infectious Disease Physician (primary) Taxonomy 207RI0200X · Licence 036-137502 (IL)
Internal Medicine Physician Taxonomy 207R00000X · Licence 036-137502 (IL)
Hospitalist Physician Taxonomy 208M00000X · Licence 8153445 (UT)
Hospitalist Physician Taxonomy 208M00000X · Licence 36.137502 (IL)

Record details

NPI number1518282938
Entity typeIndividual (Type 1)
GenderFemale
Sole proprietorNo
NPI enumeratedMarch 29, 2010
Last updated in NPPESApril 26, 2021
Certification dateApril 26, 2021
Mailing address680 N Lake Shore Dr, Chicago, IL 60611-4546

Medicare enrollment

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

Medicare specialtyHOSPITALIST
Also practisesINFECTIOUS DISEASE, INTERNAL MEDICINE
Medical schoolOTHER
Graduated 2007 (19 years in practice)
Group practice Northwestern Medical Faculty Foundation — 4394 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

Other providers in Dixon