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

James Ruska, DO

Individual provider Internal Medicine Physician · NPI 1801410022

James Ruska, DO is a Hospitalist in Chicago, Illinois. Graduated from Midwestern University, Chicago College of Osteopathic Med in 2020, 6 years ago. Practices with Endeavor Health Medical Group, a 3,348-clinician group and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
6
Trained at
Midwestern University, Chicago College of Osteopathic Med
Licensed in
IL
In the registry since
2020
Specialties on file
4
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

5145 N California Ave
Chicago, IL 60625-3687
Phone: (773) 878-8200
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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 036166143 (IL)
Internal Medicine Physician Taxonomy 207R00000X · Licence 036166143 (IL)
Internal Medicine Physician Taxonomy 207R00000X · Licence 125076755 (IL)
Internal Medicine Physician Taxonomy 207R00000X · Licence 125.076755 (IL)

Record details

NPI number1801410022
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedJune 3, 2020
Last updated in NPPESJanuary 26, 2026
Certification dateJanuary 26, 2026

Medicare enrollment

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

Medicare specialtyHOSPITALIST
Also practisesINTERNAL MEDICINE
Medical schoolMIDWESTERN UNIVERSITY, CHICAGO COLLEGE OF OSTEOPATHIC MED
Graduated 2020 (6 years in practice)
Group practice Endeavor Health Medical Group — 3348 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations7 on file with Medicare

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