D. Barry Boyd, MD


Hematology, Hematology-Oncology, Medical Oncology

Conditions & Treatments

Acute Lymphocytic Leukemia/ALL, Bladder Cancer, Bleeding Disorder, Breast Cancer, Carcinoid Tumors, Cervical Cancer, Chronic Lymphocytic Leukemia, Colon Cancer, Head & Neck Cancers, Hodgkin's Disease, Hypercoagulable State, Lung Cancer, Multiple Myeloma, Non-Hodgkin's Lymphoma, Platelet Disorders, Prostate Cancer, Rectal Cancer, Stomach Cancer

(203) 863-3700
Accepting New Patients
Telehealth Visits


D. Barry Boyd, MD, MS, was on his way to a career as an evolutionary biologist when he got derailed by oncology. Three animal biologists received the Nobel Prize in physiology and medicine, and what stood out to Dr. Boyd was that one of the winners obtained his medical degree before pursuing zoology.

“I was struck by the comprehensive nature of the medical education required for an MD, and I also became more interested in the fields of biochemistry and molecular biology,” says Dr. Boyd, an oncologist and hematologist.

Dr. Boyd enrolled in a graduate program focused on nutrition, which further shaped his work. “When I went to medical school, we spent an hour on nutrition, and in my oncology training, not a single minute was spent discussing diet,” he says. “But when I went into practice, patients were always asking me about nutrition, which further propelled me to investigate what role it plays in cancer.”

Dr. Boyd went on to write a book, “The Cancer Recovery Plan,” which focuses on nutrition, exercise, and stress relief, and began lecturing widely on these topics. “I am a biologist at heart and enjoy exploring critical questions, one patient at a time, learning about their backgrounds, diets, and lifestyles to understand their role in health and disease outcome,” says Dr. Boyd, who created and directed the curriculum on nutrition and integrative medicine for Yale School of Medicine, where he still lectures on nutrition and cancer.

Nutrition plans for cancer patients are highly personalized, he adds. “One of the best treatments for cancer is joy, I like to say. If you take away foods people like or put them on a diet they hate, then their life will be miserable,” he says. “However, you want to still have a healthy diet with adequate protein and calories and fiber.”

The best part of his job, Dr. Boyd says, is caring for people. “I feel very fortunate to do what I do,” he says.





Years In Practice


Affiliated With

Smilow Cancer Hospital, Yale Medicine


Smilow Physicians Specialty Program -Greenwich Hospital

77 Lafayette Place
Suite 301
Greenwich, CT 06831

Get Directions

Monday9:00 AM - 5:00 PM
Tuesday9:00 AM - 5:00 PM
Wednesday9:00 AM - 5:00 PM
Thursday9:00 AM - 5:00 PM
Friday9:00 AM - 5:00 PM
(203) 863-4626

Education & Training


Cornell University Medical College


New York Hospital/Cornell University


New York Hospital/Cornell University


New York Hospital

Accepted Insurance

Insurance coverage regularly changes, please contact the doctor’s office directly to verify that your specific insurance plan is accepted.

  • aetna
  • anthem bc/bs
  • cigna gatekeeper pro
  • cigna healthcare
  • connecticare
  • coventry
  • harvard pilgrim healthcare
  • healthyct
  • husky
  • medicaid
  • medicare
  • mental health network
  • multiplan
  • oxford health plans
  • tricare/champus
  • united behavioral health
  • united healthcare
  • valueoptions
  • wellcare