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

Johnny O Alexander, MD

Individual provider Diagnostic Radiology Physician · NPI 1649439043

Johnny O Alexander, MD is a Diagnostic Radiology in Chicago, Illinois. Graduated from Saint Louis University School of Medicine in 2002, 24 years ago. Practices with Professional Services of Holy Cross, a 159-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in District of Columbia, Illinois, New York and Virginia.

Years since qualifying
24
Trained at
Saint Louis University School of Medicine
Licensed in
DC, IL, NY, VA
In the registry since
2008
Specialties on file
4
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

3753 S Cottage Grove Ave Ste 101
Chicago, IL 60653-1662
Phone: (708) 216-9000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 2041 Georgia Ave Nw # 1r84, Washington, DC 20060-1662 — (202) 865-3610

Specialties & licences

Diagnostic Radiology Physician (primary) Taxonomy 2085R0202X · Licence 316970 (NY)
Diagnostic Radiology Physician Taxonomy 2085R0202X · Licence MD210012291 (DC)
Diagnostic Radiology Physician Taxonomy 2085R0202X · Licence 0101243293 (VA)
Diagnostic Radiology Physician Taxonomy 2085R0202X · Licence 36128037 (IL)

Record details

NPI number1649439043
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 2, 2008
Last updated in NPPESJuly 28, 2025
Certification dateJuly 28, 2025
Mailing addressUva Health Services Foundation, P.O. Box 9007, Charlottesville, VA 22908-0001

Medicare enrollment

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

Medicare specialtyDIAGNOSTIC RADIOLOGY
Medical schoolSAINT LOUIS UNIVERSITY SCHOOL OF MEDICINE
Graduated 2002 (24 years in practice)
Group practice Professional Services Of Holy Cross — 159 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations8 on file with Medicare

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