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Dr. Rena Callahan, MD
Oncology* Age 51
Dr. Rena Callahan, MD

Offers telehealth

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Dr. Rena Callahan, MD is an Oncology Specialist in Santa Monica, CA.
Dr. Rena Callahan, MD
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Dr. Rena Callahan, MD

Oncology* Age 51
Santa Monica, CA
Accepting new patients
22 years of experience

Offers telehealth

Dr. Rena Callahan, MD is an Oncology Specialist in Santa Monica, CA.
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About

Dr. Callahan graduated from University of Pennsylvania Perelman School of Medicine in 2004 and completed a residency at UCLA. Dr. Rena Callahan, MD is an Oncology Specialist in Santa Monica, CA and has 22 years experience. Dr. Callahan has experience treating conditions like Breast Cancer, Breast Lump and Hypogammaglobulinemia among other conditions at varying frequencies. Dr. Callahan's office accepts new patients and telehealth appointments. Dr. Callahan is board certified in Hematology and accepts multiple insurance plans.

Offers Telehealth

This provider offers telehealth appointments. Call the office to schedule.

Experience Check

Enter a condition or procedure
Breast Cancer
Breast Lump
Hypogammaglobulinemia
Breast Cancer
Breast Lump
Hypogammaglobulinemia
Bone Cancer
Ovarian Cancer
Thyroid Cancer
Brain Cancer
Male Breast Carcinoma
Breast Carcinoma
Biliary Tract Cancer
Mycosis Fungoides
Metastatic Respiratory System Cancer
Pancytopenia
Acquired Hemolytic Anemia
Liver Cancer
Hypothalamus Cancer
Ductal Carcinoma in Situ
Cutaneous T-Cell Lymphoma
Secondary Hypertension
Hemochromatosis
Skin Cancer
Uterine Cancer
Lymphocytosis
Venous Embolism and Thrombosis
Anemia
  • View other providers who treat Anemia
Hemophilia
Bleeding Disorders
Non-Hodgkin's Lymphoma
Coagulation Disorders
Anal and Rectal Cancer
Vitamin B Deficiency
Endocrine Gland Cancer
Deep Vein Thrombosis (DVT)
Colorectal Cancer
Melanoma
  • View other providers who treat Melanoma
Neuroendocrine Tumors
Leukocytosis
Leukocytopenia
Chronic Lymphocytic Leukemia
Lung Cancer
Polycythemia Rubra Vera
Neutropenia
Squamous Cell Carcinoma of Skin
Acute Leukemia
Acute Myeloid Leukemia
Amyloidosis
Antiphospholipid Syndrome (APS)
Benign Lung Neoplasms
Bladder Cancer
Cancer of Cerebral Meninges
Central Cyanosis
Cervical Cancer
Chordoma
  • View other providers who treat Chordoma
Colon Cancer
Cutaneous Follicle Center Lymphoma
Diffuse Large B-Cell Lymphoma
Erythromelalgia
Esophageal Cancer
Fallopian Tube Cancer
Folate Deficiency Anemia
Follicular Lymphoma Grade 2
Follicular Lymphoma Grade 3B
Gallbladder and Biliary Tract Cancer
Gallbladder Cancer
Gynecologic Cancer
Head and Neck Cancer
Hereditary Amyloidosis
Hodgkin's Disease
Hypercoagulable State
Immune Thrombocytopenia
Immune Thrombocytopenic Purpura (ITP)
Kidney Cancer
Laryngeal Cancer
Lobular Carcinoma
Long COVID Disorder
Lymphocytopenia
Lymphoma
  • View other providers who treat Lymphoma
Lymphoma, Large-Cell
Lymphosarcoma
Male Breast Cancer
Malignant Pituitary Gland Tumor
Malignant Pleura Secondary
Marginal Zone Lymphoma
Meningiomas
Metastatic Breast Cancer
Multiple Myeloma
Myelodysplastic Syndromes
Myeloproliferative Disorders
Nerve Sheath Tumors
Nodular Lymphocyte-Predominant Hodgkin Lymphoma
Nodular Lymphoma
Nodular Sclerosis Hodgkins Lymphoma
Oral Cancer
Osteosarcoma
Pancreatic Cancer
Peripheral T-Cell Lymphoma
Peritoneal Cancer
Pernicious Anemia
Pineal Region Tumors
Pleura Cancer
Pleural Cancer
Primary Central Nervous System Lymphoma
Primary Hypercoagulable State
Prostate Cancer
Purpura
  • View other providers who treat Purpura
Reticulosarcoma
Retroperitoneum Cancer
Secondary Malignancies
Sickle Cell Disease
Sickle Cell Hemoglobin SS Disease
Small Intestine Cancer
Soft Tissue Sarcoma
Stomach and Small Intestine Cancer
Stomach Cancer
Testicular Cancer
Thalassemia
Thalassemia Minor
Thrombocytosis
Tongue Cancer
Upper Digestive Tract Cancer
Urinary Tract Cancer
Vaginal Cancer
Vitamin B12 Anemia
Vitamin B12 Deficiency
Vulvar Cancer
Vulvovaginal Rhabdomyosarcoma
Anemia and Iron Deficiency Screening
Biopsy of Breast
Bone Marrow Biopsy
Cancer Screening
Erythropoietin Test
Liver Biopsy
Oral Cancer Screening
Skin Screenings

Insurance Accepted

* Please verify this information when scheduling an appointment.
  • First Health (Coventry Health Care) PPO
  • Aetna
    Choice Plus POS II
  • Blue Cross Blue Shield of California PPO
    Select PPO
  • UC Resident and Fellows-CA PPO
    Balanced (Prudent Buyer)-CA PPO
  • MultiPlan PPO
    PHCS Network PPO
  • Blue Card PPO
  • Options PPO
  • Curative EPO
    Curative PPO
    Curative PPO Plus
  • HealthyBlue 2.0
  • Open Access
  • Open Access Plus
  • Large Group PPO

Locations

  1. 1 Sandra Fallon M.D. Inc.
    2020 Santa Monica Blvd Ste 580, Santa Monica, CA 90404
  2. 2 UCLA Health Cancer Care In Santa Clarita
    27235 Tourney Rd Ste 2400, Valencia, CA 91355
  3. 3 Core Surgery Center Inc
    2336 Santa Monica Blvd Ste 304, Santa Monica, CA 90404

Patient Satisfaction

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Telehealth Options
This provider has not specified a telehealth appointment method. Would you still like to make an appointment with Dr. Callahan?
Call now to make an appointment
(310) 829-5471

About Me

Specialties*
Hematology
Oncology
Specialties*
  • *Sharecare does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.
Common Questions and Answers
Responses are sourced directly from patients.
Does Dr. Callahan communicate via email?
2 users said yes.
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Does Dr. Callahan offer telehealth services or virtual visits?
3 users said yes.
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Does Dr. Callahan offer an online patient portal?
3 users said yes.
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Does Dr. Callahan have free onsite parking?
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Does Dr. Callahan specialize in working with children or adolescents?
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Frequently Asked Questions

Find contact information here to make an appointment.

A list of accepted insurance providers is available on the Sharecare insurance check. It is always a good idea to verify your insurance when making an appointment.

New patients are generally accepted by Dr. Rena Callahan, MD. To arrange an appointment, call the number on Dr. Callahan's profile.

Dr. Callahan frequently treats the following conditions: Breast Cancer, Breast Lump and Hypogammaglobulinemia. See more on Sharecare.

Dr. Rena Callahan, MD is affiliated with Ronald Reagan UCLA Medical Center, Henry Mayo Newhall Hospital and Santa Monica UCLA Medical Center and Orthopaedic Hospital.

Yes, Dr. Rena Callahan, MD holds board certification in Hematology and Medical Oncology.

Education
Medical Education
  • University of Pennsylvania Perelman School of Medicine
    2004
Medical Education
Board Certifications
  • Hematology and Medical 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.
Residency Hospital
  • UCLA
Residency Hospital
Fellowship Hospital
  • University of California at Los Angeles
Fellowship Hospital

Hospital Affiliations

  • Ronald Reagan UCLA Medical Center

    757 Westwood Plz, Los Angeles, CA

  • Henry Mayo Newhall Hospital

    23845 McBean Pkwy, Valencia, CA

  • Santa Monica UCLA Medical Center and Orthopaedic Hospital

    1250 16th St, Santa Monica, CA

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