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.

Nathan R. Ehmer, DO

  • Orthopedic Surgery
Additional Language Spoken
Medical Groups & Affiliations
  • St. Joseph Health Medical Network
1405 Montgomery Drive
Santa Rosa, CA 95405
Accepting New Patients

Primary Office

1405 Montgomery Drive
Santa Rosa, CA 95405
Get Directions
(707) 546-1922
(707) 528-1602

More Information

  • Meet The Doctor

    Specialties & Education

    Primary Specialties
    • Orthopedic Surgery
    Education & Training
    • Medical School
      Midwestern University
    • Residency
      Botsford Hospital
    • Fellowship
      University of California- San Francisco
    Areas of Interest
    • Orthopaedic Trauma
    • Complex Fracture Care
    • Pelvic & Acetabular Reconstruction
    • Total Joint Replacement
    • Anterior Approach to Hip Replacement
  • Biography


    Dr. Nathan Ehmer is a board certified orthopedic surgeon specializing in orthopaedic trauma, complex fracture care,  pelvic & acetabular reconstruction and total joint replacement. He has specialized training in anterior hip replacement as well as Mako Robotic assisted and patient specific hip and knee replacement surgery. In addition, Dr. Ehmer enjoys a robust general orthopedic practice including most pediatrics, hand and foot injuries.

    Dr. Ehmer is the co-director of the Orthopaedic Trauma team at SRO and is a clinical faculty member at the department of Orthopaedic Trauma UC San Francisco/San Francisco General Hospital where he completed his fellowship in orthopaedic trauma. He completed residency training at Botsford Hospital, Farmington Hills, Michigan, followed by an additional year of fellowship training in Orthopaedic Trauma at UCSF/San Francisco General Hospital.

    For a consultation, please call 707-546-1922 (option #1) and request an appointment with Dr. Ehmer.