Hematology

Leo Orr, M.D.

Leo E. Orr Jr., M.D., is a board-certified hematologist and medical oncologist practicing in Los Angeles, California, specializing in hematology-oncology. He treats patients with various hematologic malignancies and solid tumors, focusing on conditions requiring medical oncology interventions. His patient population primarily includes adults in the Los Angeles area, managed through outpatient clinics at sites like The Oncology Institute of Hope & Innovation and affiliations with local hospit

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Credentials

Board Certifications

Internal Medicine (ABIM)
Medical Oncology (ABIM)

Education & Training

Medical School: Baylor College of Medicine (MD, 1969)
Residency: University of Texas Southwestern Medical Center (Internal Medicine, 1969-1971)
Clinical Associate: National Cancer Institute (Oncology, 1971)

Years in Practice

55+ years

Peer Recognition

Castle Connolly — Top Doctor
2002-2026 (25 years)

Clinical Focus

Subspecialties

Hematology & Oncology

Conditions & Treatments

Hematologic MalignanciesLeukemiaLymphomaMultiple MyelomaPalliative Care

Insurance(s) Accepted

90 Degree BenefitsASR Health Benefits

AetnaAllegiance Health Plans

Ambetter

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

Practice Details

Hospital Affiliations

PIH Health Good Samaritan Hospital
Ronald Reagan UCLA Medical Center
San Gabriel Valley Medical Center
USC Verdugo Hills Hospital
Whittier Hospital Medical Center

Languages

English

Conditions Dr. Orr treats

Frequently asked

Does Dr. Orr accept 90 Degree Benefits insurance?

Leo Orr's public profile lists 90 Degree Benefits, ASR Health Benefits, and Aetna plus 41 more health plans as accepted plans. Plan participation can change — confirm directly with the practice before your visit.

Where does Dr. Orr practice?

Leo Orr practices in Los Angeles, CA with hospital affiliations including PIH Health Good Samaritan Hospital, Ronald Reagan UCLA Medical Center, and San Gabriel Valley Medical Center.

What does Dr. Orr specialize in?

Leo Orr is a board-certified hematology specialist with focus areas in Hematology & Oncology.

How long has Dr. Orr been practicing?

Leo Orr has 57+ years of clinical experience in hematology.

What is Dr. Orr's medical training?

Public profile training history includes: Medical School: Baylor College of Medicine (MD, 1969); Residency: University of Texas Southwestern Medical Center (Internal Medicine, 1969-1971); Clinical Associate: National Cancer Institute (Oncology, 1971).