of
MN

Mark Northfield, MD

Dr. Northfield is an orthopedic surgeon in the Napa area. He is affiliated with Petaluma Valley Hospital and 2 more hospitals.
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Conditions treated

Tap to see related services for each condition and more details about our calculations.

Top 25%
30 doctors
Top 15%
31 doctors
Top 5%
15 doctors
Dr. Northfield saw more pain patients than 95% of similar doctors in the Napa area in 2014–2018. Learn more.

Related services provided

Top 25%
15 doctors
Top 15%
14 doctors
Top 5%
7 doctors
Dr. Northfield saw more arthritis patients than 95% of similar doctors in the Napa area in 2014–2018. Learn more.

Related services provided

Top 25%
12 doctors
Top 15%
12 doctors
Top 5%
6 doctors
Dr. Northfield saw more osteoarthritis patients than 95% of similar doctors in the Napa area in 2014–2018. Learn more.

Related services provided

Top 25%
7 doctors
Top 15%
6 doctors
Top 5%
3 doctors
Dr. Northfield saw more drug allergies patients than 75% of similar doctors in the Napa area in 2014–2018. Learn more.

Related services provided

Top 25%
11 doctors
Top 15%
10 doctors
Top 5%
5 doctors
Dr. Northfield saw more sprained joint patients than 85% of similar doctors in the Napa area in 2014–2018. Learn more.

Related services provided

Top 25%
11 doctors
Top 15%
10 doctors
Top 5%
5 doctors
Dr. Northfield saw more broken bone patients than 95% of similar doctors in the Napa area in 2014–2018. Learn more.

Related services provided

Top 25%
26 doctors
Top 15%
26 doctors
Top 5%
13 doctors
Dr. Northfield saw cardiovascular disease (CVD) patients in 2014–2018, but we couldn’t determine whether he was a top doctor for the condition in the Napa area. Learn more.

Related services provided

Top 25%
Top 15%
Top 5%
Dr. Northfield saw bursitis patients in 2014–2018, but we couldn’t determine whether he was a top doctor for the condition in the Napa area. Learn more.
Top 25%
25 doctors
Top 15%
26 doctors
Top 5%
12 doctors
Dr. Northfield saw more vascular disease patients than 75% of similar doctors in the Napa area in 2014–2018. Learn more.

Related services provided

Top 25%
2 doctors
Top 15%
2 doctors
Top 5%
Dr. Northfield saw more sprained leg patients than 85% of similar doctors in the Napa area in 2014–2018. Learn more.

Related services provided

Top 25%
9 doctors
Top 15%
8 doctors
Top 5%
4 doctors
Dr. Northfield saw more degenerative disc disease (DDD) patients than 85% of similar doctors in the Napa area in 2014–2018. Learn more.

Related services provided

Top 25%
2 doctors
Top 15%
2 doctors
Top 5%
Dr. Northfield saw sprained back patients in 2014–2018, but we couldn’t determine whether he was a top doctor for the condition in the Napa area. Learn more.

Related services provided

Top 25%
16 doctors
Top 15%
15 doctors
Top 5%
7 doctors
Dr. Northfield saw more obesity patients than 85% of similar doctors in the Napa area in 2014–2018. Learn more.

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Top 25%
9 doctors
Top 15%
8 doctors
Top 5%
4 doctors
Dr. Northfield saw more spondylosis patients than 75% of similar doctors in the Napa area in 2014–2018. Learn more.

Related services provided

Top 25%
20 doctors
Top 15%
20 doctors
Top 5%
10 doctors
Dr. Northfield saw more back problems patients than 85% of similar doctors in the Napa area in 2014–2018. Learn more.

Related services provided

Top 25%
1 doctor
Top 15%
1 doctor
Top 5%
Dr. Northfield saw more broken wrist patients than 95% of similar doctors in the Napa area in 2014–2018. Learn more.

Related services provided

Top 25%
18 doctors
Top 15%
18 doctors
Top 5%
8 doctors
Dr. Northfield saw more spine condition patients than 85% of similar doctors in the Napa area in 2014–2018. Learn more.

Related services provided

Top 25%
Top 15%
1 doctor
Top 5%
Dr. Northfield saw chondromalacia patients in 2014–2018, but we couldn’t determine whether he was a top doctor for the condition in the Napa area. Learn more.

Related services provided

Top 25%
4 doctors
Top 15%
4 doctors
Top 5%
1 doctor
Dr. Northfield saw more rotator cuff syndrome patients than 75% of similar doctors in the Napa area in 2014–2018. Learn more.

Related services provided

Top 25%
2 doctors
Top 15%
2 doctors
Top 5%
1 doctor
Dr. Northfield saw torn meniscus patients in 2014–2018, but we couldn’t determine whether he was a top doctor for the condition in the Napa area. Learn more.

Related services provided

Top 25%
4 doctors
Top 15%
4 doctors
Top 5%
2 doctors
Dr. Northfield saw more tendonitis patients than 95% of similar doctors in the Napa area in 2014–2018. Learn more.

Related services provided

Top 25%
13 doctors
Top 15%
12 doctors
Top 5%
6 doctors
Dr. Northfield saw more swelling patients than 75% of similar doctors in the Napa area in 2014–2018. Learn more.

Related services provided

Top 25%
23 doctors
Top 15%
24 doctors
Top 5%
11 doctors
Dr. Northfield saw diabetes patients in 2014–2018, but we couldn’t determine whether he was a top doctor for the condition in the Napa area. Learn more.

Related services provided

Top 25%
1 doctor
Top 15%
1 doctor
Top 5%
Dr. Northfield saw more broken hand patients than 75% of similar doctors in the Napa area in 2014–2018. Learn more.

Related services provided

Top 25%
1 doctor
Top 15%
1 doctor
Top 5%
Dr. Northfield saw more sprained hip patients than 95% of similar doctors in the Napa area in 2014–2018. Learn more.

Related services provided

Top 25%
21 doctors
Top 15%
21 doctors
Top 5%
10 doctors
Dr. Northfield saw type 2 diabetes patients in 2014–2018, but we couldn’t determine whether he was a top doctor for the condition in the Napa area. Learn more.

Related services provided

Top 25%
16 doctors
Top 15%
17 doctors
Top 5%
8 doctors
Dr. Northfield saw more back pain patients than 75% of similar doctors in the Napa area in 2014–2018. Learn more.

Related services provided

Top 25%
2 doctors
Top 15%
1 doctor
Top 5%
Dr. Northfield saw more broken ankle patients than 95% of similar doctors in the Napa area in 2014–2018. Learn more.

Related services provided

Top 25%
2 doctors
Top 15%
2 doctors
Top 5%
Dr. Northfield saw more carpal tunnel syndrome patients than 75% of similar doctors in the Napa area in 2014–2018. Learn more.

Related services provided

Top 25%
2 doctors
Top 15%
2 doctors
Top 5%
1 doctor
Dr. Northfield saw more broken arm patients than 85% of similar doctors in the Napa area in 2014–2018. Learn more.

Related services provided

Cost estimates

These ranges are network rate estimates across all the insurance plans that Dr. Northfield accepts.

Note: These are just estimates. We advise verifying the exact costs with your provider.

Broken forearm repair (non-surgical) $787 – 1,840

Amino’s cost estimates are estimates of the total amount that you and your health insurance company might pay for a procedure—this is what we call the “network rate”. Our cost estimates can help you prepare for the financial impact of medical care and help you make more confident decisions about where to get treated.

Repeat knee replacement rate

Dr. Northfield’s repeat knee replacement rate is similar to the rate we predicted for his mix of cases and patients.
Dr. Northfield’s rate < 1%
Predicted rate < 1%

As a patient, you may prefer a doctor who has a lower rate of repeat knee replacement to improve your odds of having an uncomplicated recovery after surgery.

Decision factor

Compared to predicted rates calculated for each doctor’s unique mix of cases and patients

  • Lower than our predicted rate
  • Higher than our predicted rate
  • Similar to our predicted rate

If you need a knee replacement, chances are you only want to have the procedure once. But some people need to have knee replacements done over again, sometimes due to prosthetic damage or infection from a first surgery. Not only is there pain, inconvenience, additional cost, and recovery time associated with a second surgery, but studies have also shown that the rate of complications after a revision of a knee replacement surgery is greater than for a primary knee replacement.

To help you understand how Dr. Northfield’s rate of repeat knee replacement compares to a typical doctor’s:

  1. We first measure how many of Dr. Northfield’s primary knee replacements resulted in a second knee replacement within 90 days of the first one— we call this their repeat knee replacement rate.
  2. We then analyze the typical practices of all other doctors in the United States who perform primary knee replacements, using a statistical model to predict the repeat knee replacement rate for patients like Dr. Northfield’s.

By comparing these two numbers, you can see whether Dr. Northfield’s rate of repeat knee replacement is lower than, similar to, or higher than the predicted rate.

This prediction is adjusted based on the types of patients the doctor sees, so a doctor who treats sicker patients will have a different predicted rate than one who treats healthier patients.

Locations

Dr. Northfield sees patients and can be reached at the following location.

Office
1496 Professional Dr
Petaluma, CA 94954
2,406 miles away

Reviews

Credentials
  • The Warren Alpert Medical School of Brown University
    MEDICAL EDUCATION, 1991
  • Harbor-UCLA Medical Center
    RESIDENCY

Hospital affiliations

Dr. Northfield is able to admit and treat patients at the following hospitals.

  • Petaluma Valley Hospital
    A
    Hospital safety grade (Fall 2017)
  • Santa Rosa Memorial Hospital
    B
    Hospital safety grade (Fall 2017)
  • Sonoma Valley Hospital
    C
    Hospital safety grade (Spring 2017)

Insurance accepted

Always check coverage with your doctor’s office.

  • Aetna
  • Anthem
  • Arise Health Plan
  • Arkansas Blue Cross and Blue Shield
  • Assurant Health
  • Aultcare
  • AvMed
  • Banner Health
  • Blue Cross Blue Shield of Arizona
  • Blue Cross Blue Shield of Massachusetts
  • Blue Cross Blue Shield of Michigan
  • Blue Cross and Blue Shield of Alabama
  • Blue Cross and Blue Shield of Florida
  • Blue Cross and Blue Shield of Illinois
  • Blue Cross and Blue Shield of Kansas
  • Blue Cross and Blue Shield of Kansas City
  • Blue Cross and Blue Shield of Louisiana
  • Blue Cross and Blue Shield of Minnesota
  • Blue Cross and Blue Shield of Mississippi
  • Blue Cross and Blue Shield of Montana
  • Blue Cross and Blue Shield of Nebraska
  • Blue Cross and Blue Shield of New Mexico
  • Blue Cross and Blue Shield of North Dakota
  • Blue Cross and Blue Shield of Oklahoma
  • Blue Cross and Blue Shield of Rhode Island
  • Blue Cross and Blue Shield of Texas
  • Blue Cross and Blue Shield of Vermont
  • Blue Cross and Blue Shield of Wyoming
  • Blue Cross of Idaho
  • Blue Shield of California
  • BlueCross BlueShield of South Carolina
  • BlueCross BlueShield of Tennessee
  • Capital District Physicians Health Plan
  • CareFirst BlueCross BlueShield
  • Chinese Community Health Plan
  • Cigna
  • Community Health Options
  • CommunityCare
  • CoreSource
  • Coventry Health Care
  • Cross and Blue Shield of North Carolina
  • Dean Health Plan
  • EmblemHealth
  • Evergreen Health Cooperative
  • Fallon Health
  • First Choice Health
  • FirstCare Health Plans
  • FrontPath Health Coalition
  • Geisinger Health Plan
  • Group Health Cooperative
  • Group Health Cooperative of South Central Wisconsin
  • Harvard Pilgrim Health Care
  • Hawaii Medical Assurance Association
  • Hawaii Medical Service Association
  • Health Alliance
  • Health Alliance Plan of Michigan
  • Health First
  • Health Net
  • HealthCare Partners
  • HealthNow New York
  • HealthPartners
  • HealthPlus
  • HealthSCOPE Benefits
  • HealthSmart
  • Heritage Provider Network
  • Highmark Blue Cross Blue Shield
  • Hill Physicians
  • Hometown Health
  • Horizon Blue Cross Blue Shield of New Jersey
  • Humana
  • Independence Blue Cross AmeriHealth
  • Indiana University Health Plan
  • Lifetime Healthcare
  • MVP Health Care
  • Magellan Health
  • MagnaCare
  • Mayo Clinic Health Solutions
  • MedCost
  • Medica
  • Medical Mutual of Ohio
  • Medicare
  • Meritain Health
  • Midlands Choice
  • Moda Health
  • MultiPlan
  • Neighborhood Health Plan
  • Network Health Plan
  • Ohio PPO Connect
  • Optima Health
  • Oregons Health COOP
  • PacificSource
  • Paramount
  • Pomco
  • PreferredOne
  • Premera Blue Cross
  • Presbyterian Health Plan
  • Priority Health
  • Providence Health Plan
  • Regence Blue Cross Blue Shield
  • Rocky Mountain Health Plans
  • Scott and White Health Plan
  • Security Health Plan
  • SelectHealth
  • Southeastern Indiana Health Organization
  • SummaCare
  • SynerMed
  • TRICARE
  • The Health Plan
  • Trilogy Health Insurance
  • Tufts Health Plan
  • UPMC Health Plan
  • United Healthcare
  • Unity Health Insurance
  • ValueOptions
  • Viva Health
  • WPS Health Insurance
  • WellMed Medical Management
  • Wellmark Blue Cross and Blue Shield