Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Gregory S. Doren, MD

Individual provider Ophthalmology Physician · NPI 1851411847

Dr. Gregory S. Doren, MD is an Ophthalmology in Chicago, Illinois. Graduated from University of Michigan Medical School in 1985, 41 years ago. Accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
41
Trained at
University of Michigan Medical School
Licensed in
IL
In the registry since
2007
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

3000 N Halsted St Ste 501
Chicago, IL 60657-5188
Phone: (773) 935-2800
Fax: (773) 935-2861
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Ophthalmology Physician (primary) Taxonomy 207W00000X · Licence 036079629 (IL)

Record details

NPI number1851411847
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 31, 2007
Last updated in NPPESDecember 29, 2021
Certification dateDecember 29, 2021
Mailing address3000 N Halsted St, Suite 501, Chicago, IL 60657-5188

Medicare enrollment

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

Medicare specialtyOPHTHALMOLOGY
Medical schoolUNIVERSITY OF MICHIGAN MEDICAL SCHOOL
Graduated 1985 (41 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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