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

Ankle

Arthroscopic surgery, Ligament reconstruction, Achilles tendon repair

Elbow

Biceps tendon repair, Tennis/Golfers elbow

Hand

Carpal tunnel release, Trigger finger release

Hip

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

Knee

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

Shoulder

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

Trauma

Surgical and non-surgical fracture management

Conditions Treated

Ankle Arthritis

Ankle instability

Bursitis

Capsulitis

Complex fractures

Congenital hand deformities

Dislocations

Fractures

Joint dislocations

Labral tears

Ligament injuries

Nonunions and malunions

Osteomyelitis

Overuse injuries

Rotator cuff injury

Shoulder instability

Shoulder separation

Spine trauma

Sports Injuries

Tendon disorders

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

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Our Providers

Humboldt Providers

Our Humboldt Provider

William Kilgore, MD
William Kilgore, MD
Orthopedic Surgery, Sports Medicine
City:  Eureka
4.5 out of 5

Sonoma and Napa Providers

Our Sonoma and Napa 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

Our Locations

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