Orthopedics & Sports Medicine at St. Joseph Health Medical Group

The orthopedic surgeons and sports medicine doctors at St. Joseph Health Medical Group are dedicated to providing comprehensive orthopedic care for patients throughout Northern California. Our nationally-recognized physicians are using dramatic improvements in care to successfully treat a wide range of conditions – from injuries to arthritis – allowing our patients to get back to doing the things they love.

Procedures Performed

Hand

Carpal tunnel release, Trigger finger release

Trauma

Surgical and non-surgical fracture management

Elbow

Biceps tendon repair, Tennis/Golfers elbow

Shoulder

Arthroscopic rotator cuff repair, Arthroscopic labral repair, Arthroscopic ligament repair, Arthroscopic biceps tenodesis, AC joint separation

Ankle

Arthroscopic surgery, Ligament reconstruction, Achilles tendon repair

Knee

Arthroscopic meniscal surgery, Meniscal repair, MPFL reconstruction, Cartilage repair, ACL reconstruction, Ligament reconstruction, Minimally invasive knee replacement, Minimally invasive partial knee replacement

Hip

Arthroscopic Labral repair, Arthroscopic impingement surgery, Arthroscopic bursa surgery, Minimally invasive anterior hip replacement

Conditions Treated

Sports Injuries

Ankle Arthritis

Capsulitis

Overuse injuries

Fractures

Shoulder separation

Shoulder instability

Labral tears

Dislocations

Bursitis

Rotator cuff injury

Congenital hand deformities

Nonunions and malunions

Osteomyelitis

Spine trauma

Complex fractures

Ligament injuries

Joint dislocations

Tendon disorders

Ankle instability

Our Providers

Our Provider

Mark R. Northfield, MD
Mark R. Northfield, MD
Orthopedic Surgery, Sports Medicine, Hips, shoulders, knees, Minimally invasive surgery
City:  Petaluma
4.7 out of 5

Meet Our Program Director

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Our Locations

  • Eureka - Orthopedics 2826 Harris St.,
    Eureka, CA 95503
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  • Fortuna - Orthopedic Surgery 3304 Renner Dr.,
    Fortuna, CA 95540
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  • Petaluma - Orthopedics/Sports Medicine 1496 Professional Dr., Suite 601
    Petaluma, CA 94954
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  • Santa Rosa - Orthopedic Surgery 121 Sotoyome St., Suite 101
    Santa Rosa, CA 95405
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Eureka - Orthopedics

Eureka - Orthopedics

Address
2826 Harris St.,
Eureka, CA 95503
Hours

Mon – Fri: 9 a.m. – 5 p.m.

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Fortuna - Orthopedic Surgery

Fortuna - Orthopedic Surgery

Address
3304 Renner Dr.,
Fortuna, CA 95540
Hours

Mon - Fri: 8:30 a.m. - 5 p.m.

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Petaluma - Orthopedics/Sports Medicine

Petaluma - Orthopedics/Sports Medicine

Address
1496 Professional Dr., Suite 601
Petaluma, CA 94954
Santa Rosa - Orthopedic Surgery

Santa Rosa - Orthopedic Surgery

Address
121 Sotoyome St., Suite 101
Santa Rosa, CA 95405