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

Alan J. Simmons, MD

Individual provider Internal Medicine Physician · NPI 1083818561

Alan J. Simmons, MD is an Internal Medicine in McHenry, Illinois. Graduated from University of Louisville School of Medicine in 2007, 19 years ago. Practices with Northwestern Medical Faculty Foundation, a 4,394-clinician group and accepts Medicare assignment. Licensed in Illinois, Kentucky and Tennessee.

Years since qualifying
19
Trained at
University of Louisville School of Medicine
Licensed in
IL, KY, TN
In the registry since
2007
Specialties on file
4
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

4309 W Medical Center Dr Mob A102
McHenry, IL 60050-8419
Phone: (815) 338-6600
Show map & directions

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

Specialties & licences

Hospitalist Physician (primary) Taxonomy 208M00000X · Licence 036136647 (IL)
Internal Medicine Physician Taxonomy 207R00000X · Licence 43972 (KY)
Internal Medicine Physician Taxonomy 207R00000X · Licence 45612 (TN)
Hospitalist Physician Taxonomy 208M00000X · Licence 45612 (TN)

Record details

NPI number1083818561
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 11, 2007
Last updated in NPPESJuly 21, 2022
Mailing address4309 W Medical Center Dr, Mob A102, McHenry, IL 60050-8419

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Also practisesHOSPITALIST
Medical schoolUNIVERSITY OF LOUISVILLE SCHOOL OF MEDICINE
Graduated 2007 (19 years in practice)
Group practice Northwestern Medical Faculty Foundation — 4394 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations7 on file with Medicare

Other providers in McHenry