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

Janis Wiener, MD

Individual provider Infectious Disease Physician · NPI 1750315586

Janis Wiener, MD is an Internal Medicine in Oak Park, Illinois. Graduated from University of Rochester School of Medicine and Dentistry in 1987, 39 years ago. Practices with Loyola University Medical Center, a 946-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Illinois.

Years since qualifying
39
Trained at
University of Rochester School of Medicine and Dentistry
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

965 Lake St
Oak Park, IL 60301-1292
Phone: (708) 386-3000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 036-081282 (IL)
Infectious Disease Physician Taxonomy 207RI0200X · Licence 036081282 (IL)

Record details

NPI number1750315586
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 10, 2006
Last updated in NPPESMay 5, 2021
Certification dateMay 5, 2021
Mailing address2368 Paysphere Cir, Chicago, IL 60674-2368

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Also practisesINFECTIOUS DISEASE
Medical schoolUNIVERSITY OF ROCHESTER SCHOOL OF MEDICINE AND DENTISTRY
Graduated 1987 (39 years in practice)
Group practice Loyola University Medical Center — 946 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations3 on file with Medicare

Other providers in Oak Park