of
JB

John Barnett, MD

Dr. Barnett is a hematologist oncologist in the Denver area. He is affiliated with Longmont United Hospital and 3 more hospitals.
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Conditions treated

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

Top 25%
6.2k doctors
Top 15%
6.2k doctors
Top 5%
3.1k doctors
Dr. Barnett saw more breast cancer patients than 95% of similar doctors nationwide in 2014–2019. Learn more.

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Top 25%
26k doctors
Top 15%
26k doctors
Top 5%
13k doctors
Dr. Barnett saw more anemia patients than 95% of similar doctors nationwide in 2014–2019. Learn more.

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Top 25%
8.4k doctors
Top 15%
8.4k doctors
Top 5%
4.2k doctors
Dr. Barnett saw more dehydration patients than 95% of similar doctors nationwide in 2014–2019. Learn more.

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Top 25%
2.1k doctors
Top 15%
2.1k doctors
Top 5%
1.1k doctors
Dr. Barnett saw multiple sclerosis (MS) patients in 2014–2019, but we couldn’t determine whether he was a top doctor for the condition nationwide. Learn more.

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Top 25%
6.4k doctors
Top 15%
6.4k doctors
Top 5%
3.2k doctors
Dr. Barnett saw more blood cancer patients than 95% of similar doctors nationwide in 2014–2019. Learn more.

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Top 25%
2.8k doctors
Top 15%
2.8k doctors
Top 5%
1.4k doctors
Dr. Barnett saw Crohn's disease patients in 2014–2019, but we couldn’t determine whether he was a top doctor for the condition nationwide. Learn more.
Top 25%
5.5k doctors
Top 15%
5.5k doctors
Top 5%
2.8k doctors
Dr. Barnett saw bowel obstruction patients in 2014–2019, but we couldn’t determine whether he was a top doctor for the condition nationwide. Learn more.
Top 25%
4.4k doctors
Top 15%
4.4k doctors
Top 5%
2.2k doctors
Dr. Barnett saw more colon cancer patients than 95% of similar doctors nationwide in 2014–2019. Learn more.

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Top 25%
6.3k doctors
Top 15%
6.3k doctors
Top 5%
3.1k doctors
Dr. Barnett saw more pulmonary embolism (PE) patients than 95% of similar doctors nationwide in 2014–2019. Learn more.

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Top 25%
38k doctors
Top 15%
38k doctors
Top 5%
19k doctors
Dr. Barnett saw cardiovascular disease (CVD) patients in 2014–2019, but we couldn’t determine whether he was a top doctor for the condition nationwide. Learn more.

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Top 25%
8.7k doctors
Top 15%
8.7k doctors
Top 5%
4.3k doctors
Dr. Barnett saw more thrombosis patients than 95% of similar doctors nationwide in 2014–2019. Learn more.

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Top 25%
3.9k doctors
Top 15%
3.9k doctors
Top 5%
1.9k doctors
Dr. Barnett saw more lymphoma patients than 95% of similar doctors nationwide in 2014–2019. Learn more.

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Top 25%
7.0k doctors
Top 15%
7.0k doctors
Top 5%
3.5k doctors
Dr. Barnett saw more deep vein thrombosis (DVT) patients than 95% of similar doctors nationwide in 2014–2019. Learn more.

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Top 25%
21k doctors
Top 15%
21k doctors
Top 5%
10k doctors
Dr. Barnett saw more peripheral vascular disease (PVD) patients than 85% of similar doctors nationwide in 2014–2019. Learn more.

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Top 25%
4.6k doctors
Top 15%
4.6k doctors
Top 5%
2.3k doctors
Dr. Barnett saw more prostate cancer patients than 85% of similar doctors nationwide in 2014–2019. Learn more.

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Top 25%
36k doctors
Top 15%
36k doctors
Top 5%
18k doctors
Dr. Barnett saw vascular disease patients in 2014–2019, but we couldn’t determine whether he was a top doctor for the condition nationwide. Learn more.

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Top 25%
411 doctors
Top 15%
411 doctors
Top 5%
205 doctors
Dr. Barnett saw more anal cancer patients than 85% of similar doctors nationwide in 2014–2019. Learn more.

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Top 25%
270 doctors
Top 15%
270 doctors
Top 5%
135 doctors
Dr. Barnett saw more testicular cancer patients than 85% of similar doctors nationwide in 2014–2019. Learn more.

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Top 25%
5.1k doctors
Top 15%
5.1k doctors
Top 5%
2.5k doctors
Dr. Barnett saw more lung cancer patients than 85% of similar doctors nationwide in 2014–2019. Learn more.

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Top 25%
2.2k doctors
Top 15%
2.2k doctors
Top 5%
1.1k doctors
Dr. Barnett saw more leukemia patients than 95% of similar doctors nationwide in 2014–2019. Learn more.

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Top 25%
3.4k doctors
Top 15%
3.4k doctors
Top 5%
1.7k doctors
Dr. Barnett saw more clotting disorders patients than 85% of similar doctors nationwide in 2014–2019. Learn more.

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Top 25%
1.2k doctors
Top 15%
1.2k doctors
Top 5%
607 doctors
Dr. Barnett saw more multiple myeloma patients than 85% of similar doctors nationwide in 2014–2019. Learn more.

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Top 25%
1.4k doctors
Top 15%
1.4k doctors
Top 5%
698 doctors
Dr. Barnett saw more melanoma patients than 75% of similar doctors nationwide in 2014–2019. Learn more.

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Top 25%
5.2k doctors
Top 15%
5.2k doctors
Top 5%
2.6k doctors
Dr. Barnett saw more carcinoma patients than 75% of similar doctors nationwide in 2014–2019. Learn more.

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Top 25%
1.0k doctors
Top 15%
1.0k doctors
Top 5%
515 doctors
Dr. Barnett saw brain tumor patients in 2014–2019, but we couldn’t determine whether he was a top doctor for the condition nationwide. Learn more.

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Top 25%
986 doctors
Top 15%
986 doctors
Top 5%
493 doctors
Dr. Barnett saw glioblastoma multiforme (GBM) patients in 2014–2019, but we couldn’t determine whether he was a top doctor for the condition nationwide. Learn more.

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Top 25%
782 doctors
Top 15%
782 doctors
Top 5%
391 doctors
Dr. Barnett saw throat cancer patients in 2014–2019, but we couldn’t determine whether he was a top doctor for the condition nationwide. Learn more.

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Top 25%
1.1k doctors
Top 15%
1.1k doctors
Top 5%
540 doctors
Dr. Barnett saw lymphedema patients in 2014–2019, but we couldn’t determine whether he was a top doctor for the condition nationwide. Learn more.
Top 25%
35k doctors
Top 15%
35k doctors
Top 5%
17k doctors
Dr. Barnett saw digestive tract conditions patients in 2014–2019, but we couldn’t determine whether he was a top doctor for the condition nationwide. Learn more.

Related services provided

Top 25%
4.4k doctors
Top 15%
4.4k doctors
Top 5%
2.2k doctors
Dr. Barnett saw more skin cancer patients than 75% of similar doctors nationwide in 2014–2019. Learn more.

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Locations

Dr. Barnett sees patients and can be reached at the following locations.

Rocky Mountain Cancer Centers
1800 N Williams St
Denver, CO 80218
1,662 miles away
Longs Peak Surgery Center
2030 Mountain View Ave
Longmont, CO 80501
1,664 miles away

Reviews

Credentials
  • Southern Illinois University School of Medicine
    MEDICAL EDUCATION, 2000

Specializations

    1. Allopathic & Osteopathic Physicians
    2. Internal Medicine
    3. Hematology & Oncology
    1. Allopathic & Osteopathic Physicians
    2. Internal Medicine
    3. Hematology

Hospital affiliations

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

  • Longmont United Hospital
    B
    Hospital safety grade (Fall 2019)
  • Boulder Community Foothills Hospital
    C
    Hospital safety grade (Fall 2019)
  • Medical Center of the Rockies
    C
    Hospital safety grade (Fall 2019)
  • Uchealth Longs Peak Surgery Center
    Hospital safety grade not available

Insurance accepted

Always check coverage with your doctor’s office.

  • Aetna
  • Anthem
  • Arkansas Blue Cross and Blue Shield
  • Assurant Health
  • 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
  • CareFirst BlueCross BlueShield
  • Cigna
  • CommunityCare
  • CoreSource
  • Coventry Health Care
  • Cross and Blue Shield of North Carolina
  • EmblemHealth
  • First Choice Health
  • Geisinger Health Plan
  • Group Health Cooperative
  • Harvard Pilgrim Health Care
  • Health Net
  • HealthPartners
  • HealthSCOPE Benefits
  • HealthSmart
  • Highmark Blue Cross Blue Shield
  • Hometown Health
  • Horizon Blue Cross Blue Shield of New Jersey
  • Humana
  • Independence Blue Cross AmeriHealth
  • MVP Health Care
  • MedCost
  • Medica
  • Medical Mutual of Ohio
  • Medicare
  • Meritain Health
  • Midlands Choice
  • Moda Health
  • MultiPlan
  • Neighborhood Health Plan
  • Oregons Health COOP
  • PacificSource
  • Paramount
  • Physicians Health plan
  • 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
  • TRICARE
  • United Healthcare
  • ValueOptions
  • Vantage Health Plan
  • WellMed Medical Management
  • Wellmark Blue Cross and Blue Shield