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

Gary Altwerger, MD

Individual provider Gynecologic Oncology Physician · NPI 1407114630

Gary Altwerger, MD is a Gynecological Oncology in Chicago, Illinois. Qualified in 2012, 14 years ago. Practices with Ahp Specialty Care Nfp, a 31-clinician group, works from 3 locations, accepts Medicare assignment and offers telehealth. Licensed in Illinois.

Years since qualifying
14
Licensed in
IL
In the registry since
2012
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

5841 S Maryland Ave
Chicago, IL 60637-1443
Phone: (888) 824-0200
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 333 Cedar Street, New Haven, CT 06510-3220 — (203) 785-7385
  • 880 W. Central Rd., Arlington Heights, IL 60005-2355 — (847) 618-3800

Specialties & licences

Gynecologic Oncology Physician (primary) Taxonomy 207VX0201X · Licence 036176993 (IL)

Record details

NPI number1407114630
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedApril 25, 2012
Last updated in NPPESJanuary 15, 2026
Certification dateJanuary 15, 2026
Mailing address150 Harvester Dr Ste 300, Burr Ridge, IL 60527-5965

Medicare enrollment

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

Medicare specialtyGYNECOLOGICAL ONCOLOGY
Also practisesOBSTETRICS/GYNECOLOGY
Medical schoolOTHER
Graduated 2012 (14 years in practice)
Group practice Ahp Specialty Care Nfp — 31 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations3 on file with Medicare

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