Browse Health
License & Identifications

A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).

Learn more about Dr. John Barstis:

View the full profile to get information on:

  1. Qualifications
  2. What's important to you

View full profile

Patient Reviews

Patient comments (8)

The overall average patient rating of Dr. John Barstis is Excellent. Dr. Barstis has been reviewed by 26 patients who have provided 8 comments. The rating is 5 out of 5 stars.

Patient Ratings
Ease of Appointment 4.7
Promptness 4.7
Courteous Staff 5.0
Accurate Diagnosis 5.0
Bedside Manner 5.0
Spends Time with Me 5.0
Follows Up After Visit 5.0

Specialties & Research

Dr. John Barstis, DO, MD is board certified in Medical Oncology.

  • He has special expertise in 6 areas:
  • Breast Cancer
  • Cancer
  • Chemotherapy
  • Lymphoma
  • Metastatic Breast Cancer
  • Palliative Care

Education & Awards

Dr. Barstis graduated from State University of New York at Buffalo. He has 7 awards.

Patients' Choice 5th Anniversary Award (2012)
Patients' Choice Award (2008 - 2012, 2014)
Compassionate Doctor Award - 5 Year Honoree (2014)
Compassionate Doctor Recognition (2010 - 2014)
Top 10 Doctor - Metro Area (2014)
Los Angeles Metro Area
Medical Oncologist
Top 10 Doctor - State (2014)
Medical Oncologist
On-Time Doctor Award (2014)


Dr. Barstis has 13 hospital affiliations:

  • Centinela Hospital Medical Center 
  • Henry Mayo Newhall Memorial Hospital 


  • Spanish
  • English

> > > > Dr. John Barstis, DO, MD

Similar doctors nearby

Dr. Robert Zimmerman

Radiation Oncology
19 years experience
Valencia, CA

Dr. Suzy Melkonian

Internal Medicine
17 years experience
Valencia, CA

Dr. Seyed Monemian

Internal Medicine
13 years experience
Valencia, CA

Dr. Jeffrey Miller

Internal Medicine
23 years experience
Sylmar, CA

Dr. Leland Powell

Medical Oncology
24 years experience
Sylmar, CA

Dr. Charles Rosenbaum

Internal Medicine
48 years experience
Sylmar, CA
Search All Similar Doctors
Additional Information
Dr. John L Barstis DO and MD is a male Oncologist , has 35 years of experience and practices in Medical Oncology.
Where does Dr. John L. Barstis practice?
Dr. John Barstis has 1 office location.
Dr. John Barstis practices Medical Oncology near Valencia, CA.
See Valencia Oncologists.