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.

Mary M. Koumas, DO

Specialty
  • Family Medicine
Additional Language Spoken
English
Medical Groups & Affiliations
  • Lake Forest Medical Group
Address
24401 Muirlands Blvd.
Suite A
Lake Forest, CA 92630
Accepting New Patients

Primary Office

Address
24401 Muirlands Blvd.
Suite A
Lake Forest, CA 92630
Get Directions
Phone
(949) 770-1950
Fax
(949) 770-8599
Hours
Mon 9 a.m. - 6 p.m., Tue 9 a.m. - 6 p.m., Wed 9 a.m. - 6 p.m., Thu 9 a.m. - 6 am. Fri 9 a.m. - 6 am. Sat

Secondary Office

Phone
(626) 337-7204
Fax
(626) 851-1855

More Information

  • Meet The Doctor

    Specialties & Education

    Primary Specialties
    • Family Medicine
    Education & Training
    • Medical School
      Kirksville College of Osteopathic Medicine- Kirksville, MO
    • Internship
      Doctors Hospital of Columbus- Columbus, GA - 1979
    Areas of Interest

    Family Medicine

  • Biography

    Biography

    Biography
    Certifications
    American Osteopathic Board of Family Physicians