About Me

Dr. Katayun Saadai is an internal medicine board-certified physician. She attended and graduated from Medical School at Tehran University of Medical Science in Iran. Dr. Saadai completed her internal medicine internship and residency at St. Mary’s Health Care in St. Louis, MO.

Dr. Katayun Saadai has over 23 years of diverse internal medicine experience. She was a part of the research study with Department of Endocrine and Neurology at St Louis University. She also volunteered at St. Mary’s Health Care Outpatient Clinic for 2 years.

Dr. Saadai loves spending time with her two teenage boys, and also enjoys swimming and playing tennis.


English, Farsi

Provider Specialty

Primary Care, Internal Medicine




St. Mary’s Health Care, St. Louis, MO

Medical School

Tehran University of Medical Science, Tehran, Iran

Locations & Affiliations


Insurances Accepted

UnitedHealthcare SignatureValue Harmony HMO
Aetna (HMO)
Anthem Blue Cross (HMO)
Blue Shield (HMO)
Cigna (HMO)
Health Net (HMO)
UnitedHealthcare WEST (HMO)
Aetna (Senior)
Anthem Blue Cross (Senior)
Blue Shield 65 Plus (Senior)
Health Net (Senior)
Humana (Senior)
SCAN (Senior)
UnitedHealthcare AARP Medicare Complete (Senior)
Vivity (offered by Anthem Blue Cross)