Our Services

Family Medicine

Our family medicine physicians specialize in exactly that—the care of you and your whole family. Uniquely trained to meet your health needs by treating common as well as chronic health conditions, our board certified physicians offer the expertise to help you thrive in every stage of life.

At St. Joseph Health Medical Group, family medicine is about developing lasting, caring relationships that allow us to maximize you and your family’s health. And with numerous locations, we make seeing your doctor convenient and easy.

Whatever your health needs—bronchitis to osteoporosis, wellness to heart disease—we provide expert, comprehensive care, including:

  • Complete family care (all ages)
  • Treatment of illnesses and injuries
  • Wellness and disease prevention
  • Woman’s health, including comprehensive well-woman exams
  • Treatment of chronic health conditions, such as high blood pressure, heart disease, and diabetes

View Our Locations

Family Medicine

Family Medicine

Family Medicine

Family Medicine

Family Medicine

Meet Our Providers

Peter Arellano MD, MPH (707) 251-3604
Family Medicine (Board Certified)

Monday – Friday 8:30am – 12:00pm 1:30pm-5:00pm

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Office :
St. Joseph Health Medical Group
1100 Trancas Street
Suite 350
Napa, CA 94558
Office 1:
St. Joseph Health Medical Group
510 Doiyle Park Drive
Santa Rosa, CA 95405

Office 2:
St. Joseph Health Medical Group
500 Doiyle Park Drive
Suite G04
Santa Rosa, CA 95405
Mary A. Berg MD (707) 303-8360
Family Medicine

Monday – Friday 9 a.m. – 5 p.m.

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Office 1:
St. Joseph Health Medical Group
510 Doyle Park Dr.
Santa Rosa, CA 95405

Office 2:
52 Mission Circle
Suite 121
Santa Rosa, CA 95409
Office 1:
St. Joseph Health Medical Group
8911 Lakewood Dr.
Ste. 13
Santa Rosa, CA 95495

Office 2:
Family Medicine
2323 Bethards Drive
Santa Rosa, CA 95405
Office :
St. Joseph Health Medical Group
905 E Washington St
Petaluma, CA 94952
Stephen Crane MD (707) 303-8360
Family Medicine

Please call office to confirm.

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Office :
St. Joseph Health Medical Group
510 Doyle Park Dr.
Santa Rosa, CA 95409
Office :
St. Joseph Health Medical Group
510 Doyle Park Dr.
Santa Rosa, CA 95405
George Z. Friedman MD (707) 251-3604
Family Medicine

Mon, Tue, Thurs 8:45am-12:00pm; 1:30pm-5:00pm; Wed & Fri 8:45am-12:00pm

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Office :
1100 Trancas St.
Suite 350
Napa, CA 94558
Office :
St. Joseph Health Medical Group
8911 Lakewood Dr.
Suite 13
Windsor, CA 95492
Office :
St. Joseph Health Medical Group
500 Doyle Park Dr, Suite 100
Santa Rosa, CA 95405
Winthrop Brian Hedrick DO (707) 543-2000
Family Medicine (Board Certified)
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Office 1:
Santa Rosa Urgent Care
925 Corporate Center Parkway, Suite A
Santa Rosa, CA

Office 2:
Rohnert Park Urgent Care
1450 Medical Center Drive
Rohnert Park, CA
Libre Johnson MD (707) 443-9371
Family Medicine
Internal Medicine
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Office 1:
2280 Harrison Ave
Suite B
Eureka, CA 95501

Office 2:
23rd Street Lab
Eureka, CA 95501
Robert K. Koida MD (707) 763-9891
Family Medicine

9:00 AM - 5:00 PM

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Office 1:
8911 Lakewood Drive, Suite 13
Windsor, CA 95492

Office 2:
905 E. Washington Street
Petaluma, CA 95492
Trieneke Kylstra MD (707) 542-1611
Family Medicine

M-F 8:00 a.m.-5:00pm closed 12:30-1:30 p.m.

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Office :
St. Joseph Health Medical Group
2323 Bethards Drive
Santa Rosa, CA 95405
Brenda Manfredi MD (707) 387-3910
Family Medicine (Board Certified)

Monday-Friday 8:00 a.m.-7:00 p.m. Walk-Ins Welcomed: 3:00 p.m.-7:00 p.m.

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Office :
St. Joseph Health Medical Group
8911 Lakewood Dr.
Suite 13
Windsor, CA 95492
Eleanor McLaughlin FNP (707) 763-9891
Family Medicine

Monday-Friday

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Office :
St. Joseph Health Medical Group
905 E Washington St
Petaluma, CA 94952
Diana S. Meda DO (707) 251-1867
Internal Medicine

Monday – Friday: 8:30am – 12:00pm & 1:30pm-5:00pm

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Office :
3443 Villa Lane
Suite 10
Napa, CA 94558
Cynthia Morris MD (707) 542-1611
Family Medicine

M-F 8:00 a.m.-5:00pm closed 12:30-1:30 p.m.

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Office :
St. Joseph Health Medical Group
2323 Bethards Drive
Santa Rosa, CA 95405
Michael Novak MD (707) 251-3604
Family Medicine (Board Certified)

Monday – Friday 8:30am – 12:00pm 1:30pm-5:00pm

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Office :
1100 Trancas St
Suite 350
Napa, CA 94558
Ellen Roche FNP (707) 542-1611
Family Medicine

M-F 8:00 a.m.-5:00pm closed 12:30-1:30 p.m.

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Office 1:
St. Joseph Health Medical Group
2323 Bethards Drive
Santa Rosa, CA 95405

Office 2:
500 Doyle Park Dr, Suite 200
Santa Rosa, CA 95405
Gregory P. Rosa MD (707) 823-7616
Family Medicine

Please call office for hours

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Office 1:
St. Joseph Health Medical Group
652 Petaluma Ave.
Suite B
Sebastopol, CA 95472

Office 2:
St. Joseph Health Medical Group
905 E Washington St
Petaluma, CA 94952
Office 1:
St. Joseph Health Medical Group
510 Doyle Park Drive
Santa Rosa, CA 95405

Office 2:
St. Joseph Health Medical Group
500 Doyle Park Drive
Suite G04
Santa Rosa, CA 95405
Nicholas Strange DO (707) 763-9891
Family Medicine (Board Certified)
Osteopathic Medicine (Board Certified)
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Office :
St. Joseph Health Medical Group
905 E Washington St
Petaluma, CA 94952
Julienne Tropel DO (707) 763-9891
Family Medicine

Monday-Friday

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Office :
St. Joseph Health Medical Group
905 E Washington St
Petaluma, CA 94952
Elisa Washburn DO (707) 303-8360
Family Medicine (Board Certified)

Please call our office for Dr. Washburn's hours and availability.

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Office :
St. Joseph Health Medical Group
510 Doyle Park Dr.
Santa Rosa, CA 95405