Michael D. Kassels, DO

Dr. Michael Kassels is an internal medicine specialist who practices in both Concord and Brentwood. Dr. Kassels specializes in managing chronic illnesses, diagnosing, and helping promote health and disease prevention. He treats both adolescents and adults who have everything from simple colds to complex conditions. Dr. Kassels also has a special interest in the evaluation and treatment of sports medicine injuries and has worked with the San Diego Chargers, the U.S. Ski Team, the Phoenix Suns and the San Francisco 49ers.

A few of the conditions Dr. Kassels treats includes:

  • Chronic illnesses
  • Diabetes
  • Hypertension
  • High cholesterol
  • Asthma
  • Viruses and infections
  • Depression and anxiety
  • Rashes
  • Bipolar disorder
  • Aches and pains
  • Muscle sprains and strains
  • Back pain

Dr. Kassels is the founder and director of Diablo Valley Specialists, which he opened in 1992. He is a diplomate of the National Board of Osteopathic Medical Examiners. He is also a member of the American Medical Association and the American College of Physicians. In 2015, Dr. Kassels merged his practice with BASS Medical Group.

Dr. Kassels received his medical degree from the College of Osteopathic Medicine of the Pacific in Pomona, California. He completed both internship and residency training at Kaiser Permanente Oakland Medical Center.

Dr. Kassels is fluent in both English and Spanish.

Medical School: Western University of Health Sciences in Pomona, California
Internship: Kaiser Permanente Medical Center in Oakland, California
Residency: Kaiser Permanente Medical Center in Oakland, California

John Muir Health Walnut Creek Medical Center
John Muir Health Concord Medical Center