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2 Patient Reviews

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Office Hours

Mon:8:30am - 5:00pm
Tue:8:30am - 5:00pm
Wed:8:30am - 5:00pm
Thu:8:30am - 5:00pm
Fri:8:30am - 5:00pm

Zachary S Zumsteg, MD

Radiation Oncologist - General

Biography

Zachary S. Zumsteg, MD, is a faculty member in the Department of Radiation Oncology at Cedars-Sinai Samuel Oschin Comprehensive Cancer Institute. He completed his training in radiation oncology at Mem… Read more ›

Featured Review See More Reviews

This doctor showed me that he looked into myCase before he walked in the door. That impressedMe.…

Anonymous

Summary

Provider Training

University	Degree	Focus	Graduated
University of Miami	Bachelors Degree	Other	2003
Stanford University	Masters Degree	Other	2005
UCLA David Geffen School of Medicine	Doctorate	Other	2010

Institution	Focus	Year
Residency - Memorial Sloan Kettering Cancer Center	Other	2015
Internship - UCLA-Olive View Medical Center	Other	2011

Photos

Specialties

Languages Spoken

English

Medical Specialties

Radiation Oncologist

Accepts New Patients: Yes

Payment Options

Payment Details

Reviews

Average Rating: 5
Number of Reviews: 2
Most Recent Review: 12/03/2025

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Office & Staff Evaluation Not rated

Ease of Getting an Appointment Not rated

Courtesy of Practice Staff Not rated

Office Appearance & Atmosphere Not rated

Handling of Billing Matters Not rated

Average Wait Time Not Rated

Provider Evaluation

Listening Skills

Clear Explanations

Open full review

Verified Patient

“This doctor showed me that he lo...”

This doctor showed me that he looked into myCase before he walked in the door. That impressedMe.

Anonymous 12/03/2025

Open full review

Verified Patient

“Excellent experience...”

Excellent experience

Anonymous 10/28/2025

Locations

Affiliated Practices

Cedars-Sinai Radiation Oncology - Los Angeles

8720 Beverly Blvd Beverly Building, Lower Level, Suite AC1010
Los Angeles, CA 90048

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Practice Colleagues

Procedures & Services

Procedures & Treatments Offered

Commonly Prescribed Medications

Zachary S Zumsteg, MD has not yet listed the medications that he commonly prescribes.

Accepted Insurance

Zachary S Zumsteg, MD has not yet specified the insurance plans he accepts.

Office Hours

Zachary S Zumsteg, MD

Radiation Oncologist - General

Biography

Featured Review See More Reviews

Summary

Provider Training

Photos

Specialties

Languages Spoken

Medical Specialties

Payment Options

Reviews

Office & Staff Evaluation Not rated

Provider Evaluation

Review by Anonymous on December 03, 2025 -

Office & Staff Evaluation

Practice Evaluation

Provider Evaluation

Comment - “ This doctor showed me that he lo... ”

Review by Anonymous on October 28, 2025 -

Office & Staff Evaluation

Practice Evaluation

Provider Evaluation

Comment - “ Excellent experience... ”

Locations

Affiliated Practices

Cedars-Sinai Radiation Oncology - Los Angeles

Practice Colleagues

Amin Mirhadi, MD - Radiation Oncologist

Mitchell Kamrava, MD - Radiation Oncologist

Howard Sandler, MD - Radiation Oncologist

Christiane Michele Burnison, MD - Radiation Oncologist

Behrooz Hakimian, MD - Radiation Oncologist

Stephen Shiao, MD, PhD - Radiation Oncologist

Anthony Nguyen, MD, PhD - Radiation Oncologist

Julie Jang, MD, PhD - Radiation Oncologist

Leslie Ballas, MD - Radiation Oncologist

Katelyn Atkins, MD, PhD - Radiation Oncologist

Procedures & Services

Procedures & Treatments Offered

Commonly Prescribed Medications

Accepted Insurance

Accepted Insurance