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About St. Joseph Health

SJH provides a full range of care facilities including 16 acute care hospitals, home health agencies, hospice care, outpatient services, skilled nursing facilities, community clinics and physician groups. All of our hospital and home health entities are accredited by the Joint Commission. In our award-winning facilities, SJH maintains a "continuum of care," matched to the diverse needs of the urban centers, smaller cities and rural communities who depend on us every day.

Marshall Cooperson, DO

  • Internal Medicine
    (Board Certified)
Additional Language Spoken
Napa Valley Personalized
3010 Beard Road
Napa, CA 94558
Accepting New Patients

Primary Office

Napa Valley Personalized
3010 Beard Road
Napa, CA 94558
Get Directions
(707) 257-1550
(707) 257-8219
Mon - Fri: 9 a.m. - 5 p.m.

More Information

  • Meet The Doctor

    Specialties & Education

    Primary Specialties
    • Internal Medicine
      (Board Certified)
    Education & Training
    • Medical School
      University of Osteopathic Medicine - 1987
    • Internship
      San Joaquin General Hospital - 1988
    • Residency
      San Joaquin General Hospital - 1990
  • Biography



    My philosophy of care is to provide a proactive and preventative approach to medical care that is unique and personalized to each patient. My favorite aspect of being a physician is keeping my patients well, comfortable and active.

    My hobbies include cycling, flying, fishing, hiking and mechanics.

    Board Certified: American Board of Internal Medicine
    Areas of Expertise
    I specialize in internal and preventive medicine.