> > > > Dr. John Barstis, MD, DO
Dr. John L Barstis MD and DO is a male Internist, has 34 years of experience and practices in Internal Medicine, Medical Oncology, Hematology & Oncology, and Hematology.
Video profile
Dr. John Barstis has 5 office locations.
23929 McBean Pkwy
Valencia, Valencia, CA 91355

Phone Number
Locations and availability (5)
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).

Patient Reviews

  • Currently 4 of 4 stars
Patient comments (6)

The overall average patient rating of Dr. John Barstis is Excellent. Dr. Barstis has been reviewed by 13 patients who have provided 6 comments. The rating is 4 out of 4 stars.

Patient Ratings
Ease of Appointment 3.7
  • Currently 3.7272727272727 of 4 stars
Promptness 3.7
  • Currently 3.7272727272727 of 4 stars
Courteous Staff 4.0
  • Currently 4 of 4 stars
Accurate Diagnosis 4.0
  • Currently 4 of 4 stars
Bedside Manner 4.0
  • Currently 4 of 4 stars
Spends Time with Me 4.0
  • Currently 4 of 4 stars
Follows Up After Visit 4.0
  • Currently 4 of 4 stars

Specialties & Research

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

  • He has special expertise in 5 areas:
  • Breast Cancer
  • Cancer
  • Chemotherapy
  • Lymphoma
  • Palliative Care

Education & Awards

Dr. Barstis graduated from State University of New York at Buffalo. He has 3 awards.

Patients' Choice 5th Anniversary Award (2012)
Patients' Choice Award (2008 - 2012)
Compassionate Doctor Recognition (2010 - 2013)


Dr. Barstis has 13 hospital affiliations:

  • Henry Mayo Newhall Memorial Hospital 
  • Centinela Hospital Medical Center 

Accepted Insurance Plans

Dr. Barstis accepts these health insurances in at least one office:

  • United Healthcare - 16 plans
  • Unicare - 2 plans
  • Anthem Blue Cross - 12 plans
  • Cigna - 11 plans
  • LA Care Health Plan - 3 plans
  • Blue Shield of California - 77 plans
  • Humana - 6 plans


  • Spanish

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Additional Information
Where does Dr. John L. Barstis practice?
Dr. John Barstis practices Internal Medicine, Medical Oncology, Hematology & Oncology, and Hematology near Valencia, CA.
Additional practice locations include: Los Angeles, CA.
See Valencia Internists, Valencia Oncologists, and Valencia Hematologists.