Hematology

Paul Oneill, M.D.

McHenry, IL

Paul F. O'Neill, M.D., is a hematologist-oncologist specializing in the diagnosis and treatment of hematologic malignancies and blood disorders. He focuses on conditions such as myelodysplastic syndrome (MDS), congenital aplastic anemia, acquired amegakaryocytic thrombocytopenia, acute mountain sickness, leukemia, lymphoma, myeloma, myelofibrosis, breast cancer, anemia, and soft tissue sarcoma of the head, face, and neck. His expertise includes bone marrow transplant, chemotherapy, and comprehen

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Credentials

Board Certifications

Internal Medicine (ABIM)
Medical Oncology (ABIM)

Education & Training

Medical School: University College Dublin (MD, 1990)
Residency: MetroHealth Medical Center (Internal Medicine, 1991-1994)
Fellowship: University of Arizona Health Sciences Center (Hematology & Oncology, 1994-1997)

Years in Practice

35+ years

Peer Recognition

Castle Connolly — Top Doctor
2026

Clinical Focus

Subspecialties

Hematology & Oncology

Conditions & Treatments

Hematologic MalignanciesLeukemiaLymphomaMultiple Myeloma

Insurance(s) Accepted

90 Degree BenefitsASR Health Benefits

AetnaAllegiance Health PlansAllied National

Please verify your coverage with the provider — plan participation can change.

Practice Details

Hospital Affiliations

HonorHealth
Western Arizona Regional Medical Center
UnityPoint Health-Trinity
Hammond-Henry Hospital

Languages

English

Conditions Dr. Oneill treats

Insurance accepted

Frequently asked

Does Dr. Oneill accept 90 Degree Benefits insurance?

Paul Oneill's public profile lists 90 Degree Benefits, ASR Health Benefits, and Aetna plus 55 more health plans as accepted plans. Plan participation can change — confirm directly with the practice before your visit.

Where does Dr. Oneill practice?

Paul Oneill practices in McHenry, IL with hospital affiliations including HonorHealth, Western Arizona Regional Medical Center, and UnityPoint Health-Trinity.

What does Dr. Oneill specialize in?

Paul Oneill is a board-certified hematology specialist with focus areas in Hematology & Oncology.

How long has Dr. Oneill been practicing?

Paul Oneill has 36+ years of clinical experience in hematology.

What is Dr. Oneill's medical training?

Public profile training history includes: Medical School: University College Dublin (MD, 1990); Residency: MetroHealth Medical Center (Internal Medicine, 1991-1994); Fellowship: University of Arizona Health Sciences Center (Hematology & Oncology, 1994-1997).