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    Dr. Rena D. Callahan, MD


    • (661) 255-5350

    Dr. Callahan's Overview

    Dr. Callahan graduated from the University of Pennsylvania School of Medicine in 2004. She works in Valencia, CA and specializes in Hematology/Oncology. Dr. Callahan is affiliated with Henry Mayo Newhall Hospital, Huntington Memorial Hospital, Ronald Reagan UCLA Medical Center and Santa Monica UCLA Medical Center.

    Dr. Callahan's Experience

    Years in Practice: 12

    Procedures Performed by Dr. Callahan

    Dr. Callahan's Specialties


    Dr. Callahan's Education & Training

    Medical School: University of Pennsylvania School of Medicine; Graduated 2004

    Dr. Callahan's Rating

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    Overall Rating


    • Explains conditions & treatments
    • Takes time to answer my questions
    • Provides follow-up as needed
    • View All Ratings

    Dr. Callahan's Accepted Insurance

    Please verify insurance information directly with your doctor's office as it may change frequently.

    • Aetna Choice POS II
    • Aetna HMO
    • Aetna HMO Deductible Plan CA only
    • Aetna Managed Choice POS
    • Aetna Managed Choice POS Open Access
    • Aetna Savings Plus of CA
    • Aetna Signature Administrators PPO
    • Anthem BC Pathway X PPO Tiered
    • BCBS Blue Card PPO
    • Blue Cross CA PPO Prudent Buyer Small Group
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    Dr. Callahan's Office Information & Appointments

    Office Locations

    UCLA Medical Group
    UCLA Santa Clarita Cancer Center

    23929 McBean Pkwy Ste 215
    Valencia, CA 91355
    (661) 255-5350


    Office Hours and Information

    Fax: (661) 255-9907

    Practice Website:

    Accepting New Patients: Yes

    Medicare Accepted: Yes

    Medicaid Accepted: Yes

    Monday 8:00 AM - 5:00 PM
    Tuesday 8:00 AM - 5:00 PM
    Wednesday 8:00 AM - 5:00 PM
    Thursday 8:00 AM - 5:00 PM
    Friday 8:00 AM - 5:00 PM
    Saturday Closed
    Sunday Closed

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    Office Locations

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