Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. OLIWIA LOS DO
NPI 1437952983
Internal Medicine in Park Ridge, IL

Active since March 31, 2025
1775 DEMPSTER ST, PARK RIDGE, IL 60068(847) 723-8077 Get Directions Write a Review

NPPES record last updated: September 23, 2026. Verified against the NPPES registry weekly; last sync: September 27, 2026.

About Dr. Oliwia Los Do NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. OLIWIA LOS DO (NPI 1437952983) is an individual internal medicine provider in Park Ridge, Illinois, licensed in Illinois (125086728) and active in the NPI registry since March 2025.

NPPES Registry Identity

NPI1437952983
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameDR. OLIWIA LOSCredential: DO
Location Address1775 DEMPSTER STPark Ridge, IL 60068-1143
Mailing Address1775 Ballard RdPark Ridge, IL 60068-1005 · (847) 318-9340
Sole ProprietorNo
Enumeration DateMarch 31, 2025
Last NPPES UpdateSeptember 23, 2026
NPPES CertifiedSeptember 23, 2026
✔ NPI 1437952983 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in IL · 125086728
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
1775 DEMPSTER ST, Park Ridge, IL 60068

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Physician Assistant (Surgical)
1775 DEMPSTER ST
PARK RIDGE, IL 60068
Nurse's Aide
1775 DEMPSTER ST
PARK RIDGE, IL 60068
Nurse Practitioner (Critical Care Medicine)
1775 DEMPSTER ST
PARK RIDGE, IL 60068
Registered Nurse (Emergency)
1775 DEMPSTER ST
PARK RIDGE, IL 60068
Emergency Medicine
1775 DEMPSTER ST
PARK RIDGE, IL 60068
Hospitalist
1775 DEMPSTER ST
PARK RIDGE, IL 60068
Pharmacist
1775 DEMPSTER ST
PARK RIDGE, IL 60068
Physical Medicine & Rehabilitation
1775 DEMPSTER ST
PARK RIDGE, IL 60068

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Oliwia Los's NPI number?

The NPI number for Oliwia Los is 1437952983. It was assigned to this individual provider in the NPPES registry on March 31, 2025.

Where is Oliwia Los located?

Oliwia Los practices at 1775 Dempster St, Park Ridge, IL 60068. The listed phone number is (847) 723-8077.

What is Oliwia Los's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

When was this NPI record last updated?

The NPPES record for Oliwia Los was last updated on September 23, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.