John G. Mears, MD
Hematology
Cancer Care, Internal Medicine, Medical Oncology
Accepting New Patients
Virtual Visits/Telehealth
Overview
J. Gregory Mears, M.D. is a Clinical Professor of Medicine at Columbia University Medical Center. After receiving a B.S. at Trinity College, Dr. Mears obtained an M.D. at The College of Physicians and Surgeons, Columbia University. He undertook his Internal Medicine residency at Boston University Medical Center and his Hematology-Medical Oncology fellowship at Columbia University Medical Center.Dr. Mears' early career was research based and involved studies of the molecular genetics of disorders of hemoglobin as well as chronic myelogenous leukemia. For the past 25 years Dr. Mears has maintained a clinical practice caring for people with blood disorders with an emphasis on leukemia, non-Hodgkin's lymphoma, Hodgkin's disease, and multiple myeloma. Dr. Mears has a strong clinical interest in women with breast cancer and is the Medical Director of the OctoberWoman Foundation.Additionally, Dr. Mears is pursuing clinical research in the fields of Hodgkin's and non-Hodgkin's lymphoma as well as breast cancer. He is also actively engaged in the teaching of medical students, residents and fellows.
Areas of Expertise / Conditions Treated
- Anemia, Iron Deficiency
- Bleeding Disorder
- Breast Cancer
- Chemotherapy
- Leukemia
- Lymphoma
- Multiple Myeloma
- Sickle Cell Anemia
Academic Appointments
- Professor of Medicine at CUMC
Administrative Titles
- Medical Director, Cheryl R. Lindenbaum Comprehensive Cancer Center, NYP Hudson Valley Hospital
Hospital Affiliations
- NewYork-Presbyterian / Columbia University Irving Medical Center
- NewYork-Presbyterian Hudson Valley Hospital
Gender
- Male
Schedule an Appointment
Virtual Visits/Telehealth
Virtual Visits allow you to connect with your provider from the comfort, convenience, and safety of your own home.
Connect Patient Portal
For existing patients, login to make an appointment, view documentation or contact your care provider.
Insurance Accepted
Aetna
- Aetna Signature Administrators
- EPO
- HMO
- Medicare Managed Care
- NYP Employee Plan
- NY Signature
- POS
- PPO
- Student Health
Cigna
- EPO
- Great West (National)
- HMO
- Medicare Managed Care
- POS
- PPO
Elderplan
- Medicare Managed Care
Emblem/GHI
- Medicare Managed Care
- PPO
Emblem/HIP
- ConnectiCare
- EPO
- Essential Plan
- HMO
- Medicaid Managed Care
- Medicare Managed Care
- POS
- PPO
- Select Care (Exchange)
- Vytra
Empire Blue Cross/Blue Shield
- EPO
- HMO
- Medicare Managed Care
- PPO
MagnaCare (National)
- MagnaCare
Medicare
- Railroad
- Traditional Medicare
Quality Health Management
- Quality Health Management
UnitedHealthcare
- Columbia University Employee Plan
- Compass (Exchange)
- Empire Plan
- HMO
- Medicare Managed Care
- Oxford Freedom
- Oxford HMO
- Oxford Liberty
- POS
- PPO
World Trade Center Health Plan
- World Trade Center Health Plan
*Please contact the provider’s office directly to verify that your particular insurance is accepted.
Credentials & Experience
Education & Training
- Columbia University College of Physicians and Surgeons
- Internship: Boston University Medical Center
- Residency: Boston University Medical Center
- Fellowship: Columbia Presbyterian Medical Center, NY
Board Certifications
- Hematology
- Internal Medicine
America's Top Doctor
NY Top Doctor