Careers With St. Joseph Health

Our Values are more than just words.

They form the heart and soul of St. Joseph Health and are the prime reason we attract and retain high-caliber employees who believe in the sanctity of their work in our faith-based setting.

Recent News

Irvine school nurses, staff learn Stop the Bleed techniques to respond in mass-casualty situation

Irvine school nurses and athletic trainers on Tuesday, Jan. 30, learned simple techniques that could save lives in a shooting or other ...

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Families anticipate exciting community blessing of surgical center

A community is as strong as its hospital, and with recent investments into Covenant Health Plainview, it’s evident that to our friends ...

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Severe Flu Season Tightens Its Grip on U.S.

Americans are being hit with one of the worst flu seasons in years, with misery now widespread across 46 states, health officials say. In ...

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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.

Ralph B. Hanahan, MD

Specialty
  • Radiation Oncology
Address
St. Joseph Health Medical Group - Edwin E. Eubanks Cancer Center
110 Lynch Creek Way
Suite A
Petaluma, CA 94954
Accepting New Patients

Primary Office

Address
St. Joseph Health Medical Group - Edwin E. Eubanks Cancer Center
110 Lynch Creek Way
Suite A
Petaluma, CA 94954
Get Directions
Phone
(707) 763-0600
Fax
(707) 765-1757
Hours
Mon - Fri: 8 a.m. - 5:30 p.m.

Secondary Office

Address
St. Joseph Health Medical Group (Round Barn Cancer Center)
3555 Round Barn Circle
Santa Rosa, CA 95403
Phone
(707) 528-1050
Fax
(707) 525-3874

More Information

Website
www.stjosephhealthmedicalgroup.com
Medical Groups & Affiliations
  • St. Joseph Health Medical Group
  • Meet The Doctor

    Specialties & Education

    Primary Specialties
    • Radiation Oncology
    Education & Training
    • College
      The Citadel- Charleston, SC
    • Medical School
      Medical University of South Carolina- Charleston, SC
    • Internship
      US Naval Hospital- St. Albans, NY
    • Internship
      USS Yellowstone- Mayport, FL
    • Residency
      US Naval Hospital- Oakland, CA
    • Residency
      US Naval Hospital- St. Albans, NY
    • Fellowship
      Mt. Zion Hospital
    • Fellowship
      Medical Center of San Francisco- San Francisco, CA
  • Biography

    Biography

    Biography

    Dr. Hanahan came to Redwood in 1974. After medical school at the University of South Carolina, he joined the Navy and did his residency in Radiology at Oakland Naval Hospital. He became Chief of Radiology, Radiation Oncology and Nuclear Medicine at St. Alban Naval Hospital in New York. When he resigned his commission, he did a second fellowship at UCSF's Mt. Zion Hospital and is board-certified in both Radiology and Radiation Oncology. Dr. Hanahan specializes in Prostate Cancer and began the seed implant program at Redwood in 1999.

    Certifications
    American Medical Association (AMA)
    California Medical Association (CMA)
    Sonoma County Medical Association (SCMA)
    American College of Radiology (ACR) California Radiologic Society (CRS)
    American Society for Therapeutic Radiology & Oncology (ASTRO)
    Association Northern California Oncologist (ANCO)
    Redwood Empire Radiologic Society
    American Society ofClinical Oncologists (ASCO)