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Dr. Rena Callahan, MD

Dr. Rena Callahan, MD

Medical Oncology*
20+ years of experience

Dr. Rena Callahan, MD is a medical oncologist in Santa Monica, CA and has over 20 years of experience in the medical field. Dr. Callahan has extensive experience in Breast Neoplasms. She graduated from University of Pennsylvania Perelman School of Medicine in 2004. She is affiliated with medical facilities such as Ronald Reagan UCLA Medical Center and Santa Monica UCLA Medical Center and Orthopaedic Hospital. She is accepting new patients and telehealth appointments.

4.3 Star Rating
Based on 22 reviews 4.3 Star Rating (22 reviews)

Practice

2020 Santa Monica Blvd Ste 580 Santa Monica, CA 90404
Telehealth available

Make an Appointment

(310) 829-5471

Hospital Highlight

Dr. Callahan is affiliated with Ronald Reagan UCLA Medical Center Los Angeles, a highly rated hospital.

At a Glance

  • Areas of Expertise
    Dr. Callahan specializes in the areas of Hematology, Medical Oncology & Oncology. • See board certifications
  • Explains Conditions Well
    Patients said this doctor explains conditions well. • See reviews
  • Offers Telehealth
    This doctor offers telehealth appointments. Call the office to schedule an appointment.
  • Practices at Top Hospital
    America's 100 Best Hospitals Award™ • See hospitals
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Dr. Callahan's Reviews

Likelihood to recommend Dr. Callahan

4.3

22 ratings, 4 with a written review
5 Star
82%
82%
4 Star
0%
0%
3 Star
0%
0%
2 Star
0%
0%
1 Star
18%
18%

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RecentHighestLowestMost Helpful
What went well
  • I felt respected
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Oct 31, 2024
×Post a ResponseAre you Dr. Rena Callahan, MD?
What went well
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
What could be improved
No results
Helpful
LD – Apr 04, 2022
×Post a ResponseAre you Dr. Rena Callahan, MD?
What went well
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
What could be improved
No results
Helpful
CB – Mar 27, 2022
×Post a ResponseAre you Dr. Rena Callahan, MD?
What went well
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
1 person found this helpful
Helpful
Sep 07, 2019
×Post a ResponseAre you Dr. Rena Callahan, MD?

Leave a review

How was your experience with Dr. Callahan?

Know Before You Go

About Me

biography

Dr. Rena Callahan, MD is a medical oncologist in Santa Monica, CA and has over 20 years of experience in the medical field. Dr. Callahan has extensive experience in Breast Neoplasms. She graduated from University of Pennsylvania Perelman School...read more

  • Medical Oncology

  • Hematology

*Healthgrades does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.

  • University Of California At Los Angeles

    Fellowship Hospital

  • Ucla

    Residency Hospital

  • University Of Pennsylvania Perelman School Of Medicine

    Medical School, 2004
American Board of Medical Specialties®
American Board of Internal Medicine®
- 
Hematology
- 
Medical Oncology
American Board of Medical Specialties
- 
Oncology†
†Self designated 
For detailed information about any of the below board actions, please search for the provider's records on the linked state licensing board or the Federation of State Medical Boards. To learn more about the difference between these sources, please refer to our FAQs.
Healthgrades has not received any data indicating a board action exists for this provider.

Healthgrades receives board action history for physicians and physician assistants. The information displayed here is sourced from independent information providers, such as state board websites, and may not be the most up-to-date information. Healthgrades makes no representations with respect to the accuracy of any information provided here and assumes no responsibility or liability for such information.

Learn more about medical license public record check

Focus on Breast Cancer

Locations

Practice

Sandra Fallon M.D. Inc.2020 Santa Monica Blvd Ste 580 Santa Monica, CA 90404
1

Practice

UCLA Health Cancer Care In Santa Clarita27235 Tourney Rd Ste 2400 Valencia, CA 91355
2

Practice

Core Surgery Center Inc2336 Santa Monica Blvd Ste 304 Santa Monica, CA 90404
3

Affiliated Hospitals

  • Ronald Reagan UCLA Medical Center

    757 Westwood Plz
    Los Angeles, CA 90095
    Recipient of 35
    hospital awards

    America's 100 Best Hospitals Award™ (2025, 2024, 2023)

    Top in the nation for overall patient experience based on nine measures related to doctor and nurse communication, hospital cleanliness and noise levels, and medication and post-discharge care instructions

    America's 250 Best Hospitals Award™ (2025, 2024, 2023)

    Top in the nation for overall patient experience based on nine measures related to doctor and nurse communication, hospital cleanliness and noise levels, and medication and post-discharge care instructions

    View all awards

    How patients felt about the care they received at this hospital.

    86%
    Patients said they were given information about recovering at home

    2% higher than the national average

    81%
    Patients would recommend the hospital to friends and family

    16% higher than the national average

    View all patient feedback

  • Santa Monica UCLA Medical Center and Orthopaedic Hospital

    1250 16th St
    Santa Monica, CA 90404
    Recipient of 17
    hospital awards

    America's 100 Best Hospitals Award™ (2024, 2023)

    Top in the nation for overall patient experience based on nine measures related to doctor and nurse communication, hospital cleanliness and noise levels, and medication and post-discharge care instructions

    America's 250 Best Hospitals Award™ (2024, 2023)

    Top in the nation for overall patient experience based on nine measures related to doctor and nurse communication, hospital cleanliness and noise levels, and medication and post-discharge care instructions

    View all awards

    How patients felt about the care they received at this hospital.

    84%
    Patients said they were given information about recovering at home
    79%
    Patients would recommend the hospital to friends and family

    14% higher than the national average

    View all patient feedback

  • Henry Mayo Newhall Hospital

    23845 McBean Pkwy
    Valencia, CA 91355

    How patients felt about the care they received at this hospital.

    85%
    Patients said they were given information about recovering at home

    1% higher than the national average

    77%
    Patients said that doctors always listened to them and explained things well

    1% higher than the national average

    View all patient feedback
Learn more about how Healthgrades measures Hospital Quality