Recommend a St. Joseph Health Provider: Karl A. Greer, MD Complete the form below to send the provider profile page to your friend. (707) 559-7600 Karl A. Greer, MD Petaluma Health Center - Rohnert Park 5900 State Farm Drive Rohnert Park, CA 94928 View Profile (707) 559-7600 Primary Specialty Family Medicine Accepting New Patients Page Link www.stjhs.org/find-a-doctor/g/karl-a-greer-md/?PhysicianID= Your Name * Your Email * Friend's Name * Friend's Email * Message Submit *This form is not secure. For your security, please do not share personal information, health information, social security or credit card numbers.