Dr. Gregory P Warren MD Hematologist

Dr. Gregory Warren is a hematologist in Cleveland, Ohio. He is affiliated with multiple hospitals in the area, including St. John Medical Center and University Hospitals Case Medical Center. He received his medical degree from University of Toledo College of Medicine and has been in practice for 25 years. He is one of 7 doctors at St. John Medical Center and one of 28 at University Hospitals Case Medical Center who specialize in Hematology.

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Office Location

See Contact Information

Specialty & Clinical Interests

Hematologist: General Hematology

Hospital Affiliation

St. John Medical Center

University Hospitals Case Medical Center
Ranked #15 in Cancer

Education & Medical Training

Vanderbilt University
Residency, Internal Medicine, 1989 - 1992

Indiana University School of Medicine
Fellowship, Hematology/Oncology, 1992 - 1995

University of Toledo College of Medicine
Class of 1989

Certifications & Licensure

American Board of Internal Medicine
Certified in Cardiovascular Disease

American Board of Internal Medicine
Certified in Internal Medicine

American Board of Internal Medicine
Certified in Interventional Cardiology

WI State Medical License
Active through 2013

Insurances Accepted

  • Aetna Choice POS II
  • Aetna HMO
  • AmeriHealth Direct POS
  • AmeriHealth Direct POS Value Network
  • Amerihealth HMO
  • AmeriHealth HMO Value Network
  • AmeriHealth PPO
  • AmeriHealth PPO Value Network
  • BCBS Blue Card PPO
  • CIGNA HMO
  • CIGNA Open Access
  • CIGNA PPO
  • GHI PPO
  • Great West PPO
  • HIP of New York - Select PPO
  • Horizon BCBS Direct Access
  • Horizon BCBS HMO
  • Horizon BCBS POS
  • Horizon BCBS PPO
  • Humana ChoiceCare Network PPO
  • Multiplan PHCS PPO
  • Multiplan PPO
  • Oxford Health Freedom
  • Oxford Health Liberty
  • QualCare HMO
  • QualCare PPO
  • United Healthcare - Direct Choice Plus POS
  • United Healthcare - Direct Options PPO
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