Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.

Dr. Oliwia Los, DO

Individual provider Internal Medicine Physician · NPI 1437952983

Dr. Oliwia Los, DO is an Internal Medicine Physician in Park Ridge, Illinois. Licensed in Illinois. Registered with an NPI since 2025.

Licensed in
IL
In the registry since
2025
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

1775 Dempster St
Park Ridge, IL 60068-1143
Phone: (847) 723-8077
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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 125086728 (IL)

Record details

NPI number1437952983
Entity typeIndividual (Type 1)
GenderFemale
Credentials DO
Sole proprietorNo
NPI enumeratedMarch 31, 2025
Last updated in NPPESSeptember 23, 2026
Certification dateSeptember 23, 2026

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