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Ralph B. Hanahan MD
Practice accepting new patients.

Ralph B. Hanahan MD

(707) 763-0600
Primary Specialties
  • Radiation Oncology
Medical Groups & Affiliations
  • Annadel Medical Group
  • St. Joseph Health Medical Group
  • Additional Languages Spoken
    English

Primary Office

Address:
St. Joseph Hospital Medical Group
110 Lynch Creek Way
Suite A
Petaluma, CA 94954
Phone:
(707) 763-0600
Fax:
(707) 765-1757
Hours:
Office hours are Monday - Friday from 8:00 a.m. to 5:30 p.m.
Web Page:
AnnadelMedicalGroup.com

Secondary Office

Address:
St. Joseph Hospital Medical Group
3555 Round Barn Circle
Santa Rosa, CA 95403
Phone:
(707) 528-1050
Fax:
(707) 525-3874
Hours:
Please call our office to verify Dr. Hanahan’s patient hours.

Physician Bio

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.

Education

Undergraduate Education
The Citadel, Charleston, South Carolina, BS

Medical Education
Medical University of South Carolina, Charleston, South Carolina, MD

Internship
US Naval Hospital, St. Albans, New York

Rotating Internship
US Navy -USS Yellowstone, Mayport, Florida

Residencies
General Radiology, US Naval Hospital, Oakland. California
Chief of Radiology, US Naval Hospital, St. Albans, New York

Fellowship
Radiation Oncology, Mt. Zion Hospital and Medical Center of San Francisco, University of California, San Francisco

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)