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Medical Team

Meet the Team at Cancer Care of York

What is a Medical Oncologist/Hematologist?

A physician who is specially trained to diagnose and treat cancer (Oncologist), as well as diseases of the blood, bone marrow, and lymph glands (Hematologist). The Medical Oncologist/Hematologist generally functions in a referral capacity, meaning doctors specializing in family medicine or other specialties refer patients for evaluation or treatment. He/She utilizes a team approach and coordinates with other specialists the treatment and care of patients with cancer and blood diseases.

What is an Advanced Practitioner?

Advanced Practitioners (APs) are specially trained health professionals – both Clinical Registered Nurse Practitioners (CRNPs) and Physician Assistants (PAs). They provide quality medical care and treatment to patients under the guidance of their supervising physicians.

Advanced Practitioners conduct physical exams, order and interpret lab work, diagnostics tests and x-rays. They prescribe medications and provide patient education and counseling.

Matthew Crouse, PharmD, BCPS

Oncology Pharmacist Supervisor

Jenna Shearer, CRNP

Nurse Practitioner

Grigori Okoev, MD

Hematology/Oncology Physician

Haiyun Wang, MD

Hematology/Oncology Physician

John Zerfing, CRNP

Nurse Practitioner

L. Eamonn Boyle, MD, FACP (retired)

Hematology/Oncology Physician

Daniel Efiom-Ekaha, MD, FACP

Hematology/Oncology Physician

Joyce Huang, MD

Hematology/Oncology Physician

Chanh Huynh, MD

Hematology/Oncology Physician

Annie Kannarkatt, MD (Retired)

Hematology/Oncology Physician

Joseph Kannarkatt, MD

Hematology/Oncology Physician

Dan Sotirescu, MD

Hematology/Oncology Physician

Amir Tabatabai, MD

Hematology/Oncology Physician

Kaitlin Gibson, PA-C

Physician Assistant

Christina Patterson, PA-C

Physician Assistant

Holly Taylor, PA-C

Physician Assistant