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

Aileen Diehl, MD

Individual provider Emergency Medicine Physician · NPI 1366410680

Aileen Diehl, MD is an Emergency Medicine Physician in Freeport, Illinois. Licensed in Illinois. Registered with an NPI since 2006.

Licensed in
IL
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

1045 W Stephenson St
Freeport, IL 61032-4864
Phone: (815) 599-6000
Show map & directions

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

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X (IL)

Record details

NPI number1366410680
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 11, 2006
Last updated in NPPESJuly 8, 2007

Other providers in Freeport