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Gregory P.  Rosa, MD
Practice accepting new patients.

Gregory P. Rosa, MD

(707) 823-7616
Primary Specialties
  • Family Medicine
Medical Groups & Affiliations
  • St. Joseph Health Medical Group

Primary Office

St. Joseph Health Medical Group
652 Petaluma Ave.
Suite B
Sebastopol, CA 95472
(707) 823-7616
(707) 823-2803
Please call office for hours
Web Page:

Secondary Office

(707) 763-9891
(707) 763-9896

Third Office

141 Lynch Creek Way
Suite C
Petaluma, CA 94954

Physician Bio

A board-certified family medicine physician, Dr. Rosa has provided excellent medical service for over 35 years. Dr. Rosa trained at St. Louis University Medical School. After graduating, he finished his family medicine residency at Sonoma County's Community Hospital. Since 1976, Dr. Rosa has been practicing family medicine throughout West Sonoma County; he founded Occidental Area Health Center and has remained in Sonoma County ever since. Dr. Rosa's philosophy is to listen to his patients, and to integrate personal, family, and community perspectives on medical care.


  • Medical School:
    St Louis University School of Medicine - St. Louis, MO
  • Internship:
    St Louis University School of Medicine - St. Louis, MO
  • Residency:
    Sonoma County Community Hospital


Family Medicine

Areas of Interest

  • Family Medicine