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Dr. Rena Callahan, MD

Oncology*
4.2 (21)
Map Pin Small Valencia, CA
Accepting new patients
20 years of experience

Offers telehealth

Overview of Dr. Rena Callahan, MD

Dr. Rena Callahan, MD is an Oncology Specialist in Valencia, CA. They specialize in Oncology, has 20 years of experience, and is board certified in Oncology. They graduated from University of Pennsylvania Perelman School of Medicine and is affiliated with Ronald Reagan UCLA Medical Center, Henry Mayo Newhall Hospital and UCLA Santa Monica Medical Center. Dr. Callahan, completed a residency at UCLA. Patients rated Dr. Callahan an average 4.2 star rating.

Dr. Callahan works at California Neurosurgical Institute in Valencia, CA with other offices in Santa Monica, CA and Los Angeles, CA. They frequently treat conditions like Breast Lump and Breast Cancer along with other conditions at varying frequencies. They are accepting new patients and accept Aetna, Anthem and Blue Cross Blue Shield as well as other major insurance plans. Please call ahead to schedule an appointment and to confirm all accepted insurance plans.

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These providers are on the medical staff of West Hills Hospital & Medical Center
Compare with other Oncology Specialists
Compare Dr. Callahan with our nearby Oncology Specialists at West Hills Hospital & Medical Center
These providers are on the medical staff of West Hills Hospital & Medical Center.

Dr. Callahan's Office Locations

  1. 1
    Uc Regents Ucla Dmpg Santa Clarita
    23929 McBean Pkwy Ste 215, Valencia, CA 91355 Icon Directions Right Arrow Directions Phone Icon (310) 829-5471
  2. 2
    Limited To Official Government Duties On
    2020 Santa Monica Blvd Ste 580, Santa Monica, CA 90404 Icon Directions Right Arrow Directions Phone Icon (310) 829-5471
  3. 3
    Office
    Ucla 100 Mp # 550, Los Angeles, CA 90095 Icon Directions Right Arrow Directions

Hospital Affiliations
Admitting Hospitals

Admitting hospitals are where the provider is credentialed to see patients, perform procedures, and send patients for continuous care.

  • Ronald Reagan UCLA Medical Center
  • Henry Mayo Newhall Hospital
  • UCLA Santa Monica Medical Center

Experience & Treatment Frequency

NEW FEATURE

What is treatment frequency?

Our treatment frequency feature helps you understand howoften a provider performs or treats a specificprocedure/condition compared to other doctors. Providersrank in one of four frequency categories:

Very HighFrequency
HighFrequency
NormalFrequency
May Perform

Specific procedures/conditions that don’t haveenough data are indicated with “May Perform”. We encourageyou to contact the provider with questions about theirexperience.

Search for conditions or procedures.
Breast Lump
Breast Cancer
Bone Cancer

Treatment frequency



Many providers have expertise treating multiple conditions or procedures. FindCare uses a variety of data sources to determine which conditions or procedures a provider treats and their level of experience.
Breast Lump
Breast Cancer
Bone Cancer
Acquired Hemolytic Anemia
Anemia
  • View other providers who treat Anemia
Brain Cancer
Breast Carcinoma
Cholangiocarcinoma
Cutaneous T-Cell Lymphoma
Deep Vein Thrombosis (DVT)
Ductal Carcinoma in Situ
Hemochromatosis
Hypogammaglobulinemia
Leukocytopenia
Liver Cancer
Lung Cancer
Male Breast Carcinoma
Metastatic Respiratory System Cancer
Mycosis Fungoides
Non-Hodgkin's Lymphoma
Ovarian Cancer
Polycythemia Rubra Vera
Prostate Cancer
Retroperitoneum Cancer
Thyroid Cancer
Venous Embolism and Thrombosis
Vitamin B Deficiency
Acute Leukemia
Amyloidosis
Anal and Rectal Cancer
Benign Lung Neoplasms
Bleeding Disorders
Cancer of Cerebral Meninges
Chordoma
  • View other providers who treat Chordoma
Chronic Lymphocytic Leukemia
Coagulation Disorders
Colorectal Cancer
Diffuse Large B-Cell Lymphoma
Endocrine Gland Cancer
Esophageal Cancer
Ewing's Sarcoma
Follicular Lymphoma Grade 1
Gallbladder and Biliary Tract Cancer
Gallbladder Cancer
Gynecologic Cancer
Head and Neck Cancer
Hemophilia
Hypercoagulable State
Hypothalamus Cancer
Immune Thrombocytopenic Purpura (ITP)
Kidney Cancer
Laryngeal Cancer
Leukocytosis
Lobular Carcinoma
Lymphoma
  • View other providers who treat Lymphoma
Lymphoma, Large-Cell
Lymphosarcoma
Male Breast Cancer
Malignant Pleura Secondary
Marginal Zone Lymphoma
Melanoma
  • View other providers who treat Melanoma
Myelodysplastic Syndromes
Myeloma
  • View other providers who treat Myeloma
Myeloproliferative Disorders
Neuroendocrine Tumors
Neutropenia
Oral Cancer
Osteosarcoma
Pancreatic Cancer
Pancytopenia
Peritoneal Cancer
Pleural Cancer
Primary Central Nervous System Lymphoma
Primary Hypercoagulable State
Purpura
  • View other providers who treat Purpura
Reticulosarcoma
Secondary Hypertension
Secondary Malignancies
Sickle Cell Disease
Sickle Cell Hemoglobin SS Disease
Skin Cancer
Small Intestine Cancer
Soft Tissue Sarcoma
Stomach and Small Intestine Cancer
Stomach Cancer
Thalassemia
Thrombocytosis
Tongue Cancer
Upper Digestive Tract Cancer
Uterine Cancer
Anemia and Iron Deficiency Screening
Biopsy of Breast
Bone Marrow Biopsy
Cancer Screening
Erythropoietin Test
Liver Biopsy
Oral Cancer Screening
Skin Screenings
Check your insurance
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    Please double-check when making an appointment.

    View All Accepted Carriers

    • Aetna
    • Anthem
    • AvMed
    • Blue Cross Blue Shield
    • Blue Cross Blue Shield of California
    • CareFirst Blue Cross Blue Shield
    • Cigna
    • First Health
    • Health Net of California
    • MultiPlan
    • UnitedHealthCare

    * Please verify this information when scheduling an appointment.

    Ratings & Reviews
    Reviews are displayed in date order and collected from patients who have agreed to reporting accurate and fair reviews. Providers with no reviews may have a new FindCare profile, or no submitted reviews on FindCare yet.

    Learn more about how FindCare's ratings and reviews work

    4.2
    Average provider rating
    Based on 21 ratings
    Patient Ratings (21)
    5 Star
    (17)
    4 Star
    (0)
    3 Star
    (0)
    2 Star
    (0)
    1 Star
    (4)
    Leave a review

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    Dr. Callahan's Office & Staff

    • Ease of scheduling urgent appointments
    • Office environment, cleanliness, comfort, etc.
    • Staff friendliness and courteousness
    • Total wait time (waiting & exam rooms)

    Experience with Dr. Callahan

    • Level of trust in provider's decisions
    • How well provider explains medical condition(s)
    • How well provider listens and answers questions
    • Hpends appropriate amount of time with patients

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    About Dr. Rena Callahan, MD

    Specialties*
    • Oncology

    • *Healthline does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.
    Specialties*
    Years of Experience
    • 20 years of experience
    Years of Experience
    Years of experience represents how long a provider has been practicing in their field since graduating from medical school. Not all providers will have this information available.

    Languages Spoken
    • English
    Languages Spoken
    NPI Number
    • 1487856779
    NPI Number
    A National Provider Identifier (NPI) is a unique 10-digit identifier issued by the government to healthcare providers.

    Education & Certifications

    Fellowship
    • University of California At Los Angeles
    Fellowship
    Residency
    • UCLA
    Residency
    Medical Education
    • University of Pennsylvania Perelman School of Medicine
    Medical Education
    Board Certifications
    • Oncology
    Board Certifications
    What’s a board certification and why is it important that my provider has one?

    A board certification represents a provider’s dedication to ongoing training in one or more specialties, including the completion of intensive exams. While not all specialties have board certifications, if your provider does have one they’ve taken the extra step to master their specialty and to keep up with the latest advancements in their field.

    Frequently Asked Questions

    Dr. Rena Callahan, MD is accepting new patients on Healthline FindCare. You can check to see if Dr. Callahan is offering online scheduling or call the provider’s office for more information.

    Dr. Callahan has indicated that they do offer telehealth services. Please call the provider’s office at for more information.

    Dr. Callahan has seen patients for Breast Lump and Breast Cancer, and more. You can see other conditions treated by Dr. Callahan on their profile. Please call the provider’s office to confirm all visit reasons.

    21 patients have reviewed Dr. Callahan. The overall rating for this provider is 4.2. You can read verified reviews and ratings and leave your own review based on your experience with Dr. Callahan.

    Whether a person prefers to schedule an appointment online or over the phone with Dr. Callahan, there are benefits to both methods. A person calling to schedule an with Dr. Callahan appointment can ask questions about the practice, provider availability, conditions treated, procedures performed, and if their insurance carrier is accepted. While online scheduling is quicker, easier, allows one to view a wide range of appointment times, and may provide the ability to sync with a personal calendar.

    Telehealth Options
    This provider has not specified a telehealth appointment method. Would you still like to make an appointment with Dr. Callahan, or would you like to choose another provider and have an online appointment right now?
    Find provider online now
    Call now to make an appointment
    (310) 829-5471

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