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

Mr. Mariusz Milejczyk, MD

Individual provider Internal Medicine Physician · NPI 1467598235

Mr. Mariusz Milejczyk, MD is an Internal Medicine in Libertyville, Illinois. Qualified in 1990, 36 years ago. Accepts Medicare assignment and offers telehealth. Licensed in Illinois.

Years since qualifying
36
Licensed in
IL
In the registry since
2007
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

1880 W Winchester Rd Ste 106
Libertyville, IL 60048-5321
Phone: (847) 367-4277
Fax: (847) 810-0287
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 036093940 (IL)

Record details

NPI number1467598235
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJanuary 29, 2007
Last updated in NPPESDecember 27, 2024
Certification dateDecember 27, 2024

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 1990 (36 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Other providers in Libertyville