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

Dr. George Ronen Nissan, DO

Individual provider Internal Medicine Physician · NPI 1245222033

Dr. George Ronen Nissan, DO is an Internal Medicine in Chicago, Illinois. Graduated from Midwestern University, Chicago College of Osteopathic Med in 1999, 27 years ago. Practices with Endeavor Health Medical Group, a 3,348-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in Illinois and Texas.

Years since qualifying
27
Trained at
Midwestern University, Chicago College of Osteopathic Med
Licensed in
IL, TX
In the registry since
2005
Specialties on file
2
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

1460 N Halsted St Ste 501
Chicago, IL 60642-2615
Phone: (773) 388-6390
Fax: (312) 867-7101
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 2150 Pfingsten Rd., Glenview, IL 60026-1326 — (773) 388-6390

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 036108447 (IL)
Internal Medicine Physician Taxonomy 207R00000X · Licence L0459 (TX)

Record details

NPI number1245222033
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedAugust 17, 2005
Last updated in NPPESAugust 8, 2025
Certification dateAugust 8, 2025

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolMIDWESTERN UNIVERSITY, CHICAGO COLLEGE OF OSTEOPATHIC MED
Graduated 1999 (27 years in practice)
Group practice Endeavor Health Medical Group — 3348 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations4 on file with Medicare

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