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

Individual provider Internal Medicine Physician · NPI 1649307315

Dr. Jadwiga A. Loj, MD is an Internal Medicine in Park Ridge, Illinois. Qualified in 1991, 35 years ago. Practices with Advocate Health and Hospitals Corporation, a 3,079-clinician group and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
35
Licensed in
IL
In the registry since
2007
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

1775 Dempster St
Park Ridge, IL 60068-1174
Phone: (847) 723-6975
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hospitalist Physician (primary) Taxonomy 208M00000X · Licence 036-112352 (IL)
Internal Medicine Physician Taxonomy 207R00000X · Licence 36-112352 (IL)

Record details

NPI number1649307315
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorYes
NPI enumeratedFebruary 28, 2007
Last updated in NPPESMarch 20, 2025
Certification dateMarch 20, 2025

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 1991 (35 years in practice)
Group practice Advocate Health And Hospitals Corporation — 3079 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Other providers in Park Ridge