Summary

Dr. Brian Leberthon is an oncologist and internal medicine physician who has dedicated 33 years to caring for cancer patients. He earned his medical degree from the Keck School of Medicine at the University of Southern California and completed his residency training at Cedars Sinai Medical Center. Dr. Leberthon speaks both English and Spanish, helping him connect with a diverse patient community.

Dr. Leberthon practices at several locations throughout West Covina and San Dimas, maintaining affiliations with Emanate Health Queen Of The Valley Hospital, Alhambra Hospital Medical Center, San Dimas Community Hospital, and West Covina Medical Center. He specializes in treating breast cancer, including cases where the cancer has spread or returned. His expertise includes managing treatment side effects like nausea and vomiting that can occur during cancer therapy. Dr. Leberthon performs infusion therapy and administers intravenous chemotherapy to help patients fight their cancer. Patients rate him 4.4 out of 5 stars on average.
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Overview based on verified provider data

Quick Facts

  • accepting new patients
  • 4.4
  • 33 years of experience
  • speaks English, Spanish
  • Cedars Sinai Medical Center
  • 5 written reviews
  • 2 specialties
  • 8 areas of expertise
  • 2 board certifications
  • 4 hospital affiliations
  • 4 office locations
  • Male

Patients’ Perspective

  • Gave an accurate diagnosis
  • Had a good bedside manner
  • Spent time with me

Office Locations

Dr. Brian John Leberthon has 4 locations

Brian J Leberthon Md Medical Group

1135 S Sunset Ave Ste 207West Covina, CA 91790
Mon8:00 am - 5:00 pm
Tue8:00 am - 5:00 pm
Wed8:00 am - 5:00 pm
Thu8:00 am - 5:00 pm
Fri8:00 am - 5:00 pm
SatClosed
SunClosed

Emanate Health Queen Of The Valley Hospital

1115 S Sunset AveWest Covina, CA 91790

San Dimas Community Hospital

1350 W Covina BlvdSan Dimas, CA 91773

West Covina Medical Center

725 S Orange AveWest Covina, CA 91790

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Dr. Brian John Leberthon, MDDr. Shahrooz Eshaghian, MD, FACPDr. Ronald Tang, DODr. Virginia Von Schaefer, MD
OncologyOncologyOncologyOncology
Accepts New Patients Accepts New Patients Accepts New Patients Accepts New Patients
4.4 
4.6 
33 Years of Experience 20 Years of Experience 18 Years of Experience 43 Years of Experience
No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option Virtual Visit Available
Speaks English, Spanish Speaks English, Farsi, Hebrew Speaks English, Cantonese, Spanish Speaks English
West Covina , CALos Angeles , CAMontebello , CASan Clemente , CA
Med School: Keck School Of Medicine Of The University Of Southern California Med School: Albert Einstein College of Medicine Med School: Western Univ Health Sci College Of Osteopathic Medicine Of The Pacific Med School: Columbia University College Of Physicians & Surgeons
Current Profile
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Insurance Plans Accepted by Dr. Brian John Leberthon

  • Accepts Medicare
  • Accepts Medicaid

Medical Specialties

Dr. Brian John Leberthon has the following 2 specialties

Specialty Expertise

Dr. Brian John Leberthon has the following 8 areas of expertise

  • Bone Marrow Transplant
  • Cancer
  • Chemotherapy
  • Internal Medicine
  • Leukemia
  • Lymphoma
  • Myelofibrosis
  • Myeloma

Certifications, License, & Education

33 Years Experience

Dr. Brian John Leberthon holds an active medical license in the state of California.

Medical License

Medical Doctor with an active medical license in the state of California that expired in 2026.

Education & Training

Residency

Completed their residency at Cedars Sinai Medical Center.

Medical School

Graduated from Keck School Of Medicine Of The University Of Southern California in 1993.

NPI Number

Dr. Leberthon's NPI number is 1326023979.

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Frequently Asked Questions

Where is Dr. Brian John Leberthon's office located?
Dr. Brian John Leberthon's office is located at 1135 S Sunset Ave Ste 207, West Covina, CA, 91790.
Does Dr. Brian John Leberthon accept my insurance?
You can see the insurance plans that Dr. Brian John Leberthon accepts on their Vitals profile.
What languages does Dr. Brian John Leberthon speak?
Dr. Brian John Leberthon speaks English and Spanish.
How can I make an appointment with Dr. Brian John Leberthon?
You can find contact information for Dr. Brian John Leberthon here on Vitals.
Is Dr. Brian John Leberthon accepting new patients?
Dr. Brian John Leberthon is accepting new patients on Vitals. View Dr. Brian John Leberthon's profile on Vitals to make an appointment.

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