Your safety is our priority. We’re doing more than ever to help ensure your protection and well-being when you come see us for care. Learn more.

A Message to Our Community: Changes to our visitation policy are in effect until further notice.

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 ...

Read More

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 ...

Read More

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 ...

Read More

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.

Mary Mahoney, MD

  • Breast Surgery
Additional Language Spoken
Mary Mahoney, MD
2504 Harris Street
Suite A
Eureka, CA 95503
Accepting New Patients

Primary Office

Mary Mahoney, MD
2504 Harris Street
Suite A
Eureka, CA 95503
Get Directions
(707) 476-0690
(707) 476-0692

More Information

  • Meet The Doctor

    Specialties & Education

    Primary Specialties
    • Breast Surgery
    Secondary Specialties
    • General Surgery
    Education & Training
    • College
      Stanford University - 1971
    • Medical School
      Stanford University School of Medicine - 1975
    • Internship
      Stanford University School of Medicine - 1982
    • Residency
      Stanford University School of Medicine - 1983
  • Biography




    Medical Director, Cancer Care Program, 2010 – Present
    Medical Director, Perioperative Services, 2007 - Present

    Areas of Expertise
    American Board of Surgery