Back to Search

Byeff, Peter David, MD

Director, George Bray Cancer Center




English, French

Providing the best care to our patients and their companions requires communicating in a way everyone understands. Interpreter services are available 24 hours a day, 7 days a week, 365 days a year. All spoken languages are available, as well as American Sign Language (AS/L).

Accepting New Patients
  • Hematology / Oncology
Not Currently Accepting New Patients
  • Internal Medicine

Areas of Expertise
Gastrointestinal Cancer, Hematologic Cancers, Hematologic Malignancy, Hematological Malignancies, Leukemia, Lung Cancer, Lymphoma, Myelodysplasia, Myelomas


Columbia Presbyterian Medical Center

Georgetown University Hospital

Medical School
John Hopkins University School of Medicine

Georgetown University Hospital

Professional Organizations

  • American Society of Hematology, Member
  • American Society of Clinical Oncology, Member
  • American Medical Association, Member
  • Connecticut State Medical Society, Member


Verified Patient Reviews

5 out of 5 stars

Excellent in all areas.

5 out of 5 stars

Only issue is he always runs so late.

5 out of 5 stars

They are the best.

5 out of 5 stars

*Dr. Byeff is an exceptional doctor. Fully explains all issues. He takes interest in you as a person not just a patient.

5 out of 5 stars

*Dr. Byeff was excellent put me right at ease.

Other Reviews from Around the Web

5 out of 5 stars

Dr Byaff is the best. Dr I have ever been to. He fixed my health concern quickly and with ultimate kindness. I highly advise any one needing care to visit him!

5 out of 5 stars

Seen quickly by Dr Byeff.

5 out of 5 stars

Treated with respect and the staff is very helpful and kind

5 out of 5 stars

Dr. Peter Byeff saved my father's life in 1984 by making the right call after diagnosing him in the Emergency Room at Bradley Memorial Hospital in Southington CT, which is now affiliated with HOCC. Now here I am year's later and he's making the right calls and diagnosis's that are helping me to get healthy and back on my feet again. You won't find a nicer doctor, professional and kind person, who is there for you! He along with his entire staff truly care and are there too help all of us who need it.

5 out of 5 stars

I've been seeing Dr. Byeff for three years now and I'm in remission, no signs of cancer anywhere. Dr. Byeff is a wonderful Oncologist, very aggressive and that's what one needs. I've been blessed at a fresh start in life. Thank you Dr. Byeff, his amazing nurses and staff!


Peter D Byeff, MD, graduated cum laude from the University of Pennsylvania where he received a BA degree and was recognized with honors in his major field of study. He graduated from the Johns Hopkins University School of Medicine and served his internship and residency in internal medicine at Georgetown University Hospital. He was a visiting fellow in Hematology-Oncology at Columbia-Presbyterian Medical Center and was awarded the Royal Gibson Award as the outstanding first year fellow. He also received the prestigious Damon Runyon-Walter Winchell fellowship for his research efforts. He is triple Board Certified in Hematology, Oncology, and Internal Medicine.

Since finishing his training at Columbia, Dr. Byeff has been in practice in central Connecticut. He was the first director of the George Bray Cancer Center at the Hospital of Central Connecticut, and was re-appointed to this position in October of 2008. He has been the principal investigator for the Eastern Cooperative Oncology Group and the National Adjuvant Breast and Bowel Project at The Hospital of Central Connecticut. He is an investigator for the Gynecologic Oncology Group. He served on the American Society of Clinical Oncology Workforce Task-force which identified the impending crisis in oncology workforce numbers. He has written a number of scientific papers and is the founding member of the Cancer Center of Central Connecticut. Currently, he is a representative from The Johns Hopkins School of Medicine to the Alumni Council of Johns Hopkins University and serves on its Executive Committee.


Aetna, Anthem, BCBS Medicare, CarePartners of Connecticut, Cigna Healthcare, Colonial Cooperative Care, Community Health Network of Connecticut, Inc., Connecticare, Connecticare Commercial, Connecticare Medicare, Corvel, Coventry, Essence Healthcare, Evercare, First Health Group Corp., Focus, Harvard Pilgrim, Health Connecticut, Health Direct, Health New England, Healthy Connecticut, Multiplan, Northeast Health Direct, One Health Plan/ Great-West Healthcare, Oxford Health Plans, Prime Health Services, Private Health Care Systems, Inc., Senior Whole Health, United Healthcare, WellCare of Connecticut, Inc.

This information is subject to change at any time. Please check with your insurance provider before scheduling your appointment or receiving services to confirm they are a participating member of the Hartford HealthCare network.