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

Timothy E Jessen, MD

Individual provider Internal Medicine Physician · NPI 1831165034

Timothy E Jessen, MD is an Allergy/Immunology in Freeport, Illinois. Graduated from University of Illinois College of Med (CHI/PEOR/ROCK/Chm-Urb) in 1983, 43 years ago. Practices with Freeport Memorial Hospital, a 140-clinician group and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
43
Trained at
University of Illinois College of Med (CHI/PEOR/ROCK/Chm-Urb)
Licensed in
IL
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1010 Fairway Dr
Freeport, IL 61032-6600
Phone: (815) 599-6930
Fax: (815) 599-7613
Show map & directions

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

Specialties & licences

Allergy & Immunology Physician (primary) Taxonomy 207K00000X · Licence 036077588 (IL)
Internal Medicine Physician Taxonomy 207R00000X · Licence 036077588 (IL)

Record details

NPI number1831165034
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 27, 2006
Last updated in NPPESOctober 23, 2017
Mailing address421 W Exchange St, Po Box 268, Freeport, IL 61032-4030

Medicare enrollment

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

Medicare specialtyALLERGY/IMMUNOLOGY
Also practisesINTERNAL MEDICINE
Medical schoolUNIVERSITY OF ILLINOIS COLLEGE OF MED (CHI/PEOR/ROCK/CHM-URB)
Graduated 1983 (43 years in practice)
Group practice Freeport Memorial Hospital — 140 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Other providers in Freeport