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Dr. John Barnett, MD

Medical Oncology*
4.9 (125)
Map Pin Small Longmont, CO
Accepting new patients
24 years of experience

Offers telehealth

Overview of Dr. John Barnett, MD

Dr. John Barnett, MD is a Medical Oncology Specialist in Longmont, CO. They specialize in Medical Oncology, has 24 years of experience, and is board certified in Hematology. They graduated from Southern Illinois University School of Medicine and is affiliated with Avista Adventist Hospital, Foothills Hospital, Good Samaritan Medical Center, Longmont United Hospital, North Suburban Medical Center, St. Anthony Hospital, St. Anthony North Hospital, Lutheran Medical Center and UCHealth Longs Peak Hospital. Dr. Barnett, completed a residency at Brown University / Rhode Islan. Patients rated Dr. Barnett an average 4.9 star rating.

Dr. Barnett works at Practice in Longmont, CO. They are accepting new patients and accept Aetna, Anthem and Anthem Blue Cross Blue Shield as well as other major insurance plans. Please call ahead to schedule an appointment and to confirm all accepted insurance plans.

FindCare Super Profile Designation
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User Ratings (of at least 4.0)
Insurance Accepted
Headshot Available
Accepting New Patients
Conditions Treated and Procedures Performed

Dr. Barnett's Office Locations

  1. 1
    Longmont
    2030 Mountain View Ave Ste 210, Longmont, CO 80501 Icon Directions Right Arrow Directions Phone Icon (303) 684-1900
    Monday
    07:30 - 16:30
    Tuesday
    07:30 - 16:30
    Wednesday
    07:30 - 16:30
    Thursday
    07:30 - 16:30
    Friday
    07:30 - 16:30
  2. 2
    Rocky Mountain Cancer Centers - Longmont
    1760 E Ken Pratt Blvd Ste 302, Longmont, CO 80504 Icon Directions Right Arrow Directions Phone Icon (303) 684-1900

Hospital Affiliations
Admitting Hospitals

Admitting hospitals are where the provider is credentialed to see patients, perform procedures, and send patients for continuous care.

  • Avista Adventist Hospital
  • Foothills Hospital
  • Good Samaritan Medical Center
  • Longmont United Hospital
  • North Suburban Medical Center
  • St. Anthony Hospital
  • St. Anthony North Hospital
  • Lutheran Medical Center
  • UCHealth Longs Peak Hospital

Experience & Treatment Frequency

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May Perform

Specific procedures/conditions that don’t haveenough data are indicated with “May Perform”. We encourageyou to contact the provider with questions about theirexperience.

Search for conditions or procedures.
Retroperitoneum Cancer
Lung Cancer
Bone Cancer

Treatment frequency



Many providers have expertise treating multiple conditions or procedures. FindCare uses a variety of data sources to determine which conditions or procedures a provider treats and their level of experience.
Retroperitoneum Cancer
Lung Cancer
Bone Cancer
Anal and Rectal Cancer
Anemia
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Bladder Cancer
Bleeding Disorders
Brain Cancer
Breast Cancer
Breast Lump
Cholangiocarcinoma
Chronic Lymphocytic Leukemia
Chronic Myeloid Leukemia (CML)
Coagulation Disorders
Colorectal Cancer
Deep Vein Thrombosis (DVT)
Diffuse Large B-Cell Lymphoma
Esophageal Cancer
Head and Neck Cancer
Hemochromatosis
Hypercoagulable State
Kidney Cancer
Liver Cancer
Melanoma
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Metastatic Respiratory System Cancer
Myeloma
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Myeloproliferative Disorders
Neuroendocrine Tumors
Neutropenia
Non-Hodgkin's Lymphoma
Oral Cancer
Osteosarcoma
Ovarian Cancer
Pancreatic Cancer
Pancytopenia
Peritoneal Cancer
Pernicious Anemia
Primary Central Nervous System Lymphoma
Primary Hypercoagulable State
Prostate Cancer
Skin Cancer
Small Intestine Cancer
Soft Tissue Sarcoma
Soft Tissue Sarcoma of Head, Face, and Neck
Testicular Cancer
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Urinary Tract Cancer
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Acquired Red Cell Aplasia
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Antiphospholipid Syndrome (APS)
Breast Carcinoma
Cancer of Cerebral Meninges
Cervical Cancer
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Colon Cancer
Cutaneous T-Cell Lymphoma
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Ductal Carcinoma in Situ
Duodenal Cancer
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Factor II Deficiency
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Factor XIII Deficiency
Fallopian Tube Cancer
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Follicular Lymphoma Grade 2
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Immune Thrombocytopenia
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Leukemia
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Leukocytopenia
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Lymphocytopenia
Lymphocytosis
Lymphoma
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Macroglobulinemia (incl. Waldenstrom's )
Male Breast Carcinoma
Malignant Mediastinal Tumor
Malignant Pleura Secondary
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Marginal Zone Lymphoma
Mast Cell Diseases
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Multiple Sclerosis (MS)
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Myelodysplastic Syndromes
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Nerve Sheath Tumors
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Nodular Sclerosis Hodgkins Lymphoma
Penile Cancer
Penile Carcinoma
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Pleural Cancer
Polycythemia Rubra Vera
Refractory Anemia without Sideroblasts
Salivary Gland Cancer
Squamous Cell Carcinoma of Skin
Stomach Cancer
Thalassemia
Throat Cancer (Hypopharyngeal)
Tonsil Cancer
Urethra Cancer
Vertebral Column Tumors
Vitamin B Deficiency
von Willebrand Disease
Biopsy of Breast
Cancer Treatment
Chemotherapy
Liver Biopsy
Thoracentesis
Check your insurance
    Close Icon
    Please double-check when making an appointment.

    View All Accepted Carriers

    • Accepts most major Health Plans. Please contact our office for details.
    • Aetna
    • Anthem
    • Anthem Blue Cross Blue Shield
    • Blue Cross Blue Shield
    • Buckeye Community Health Plan
    • CareFirst Blue Cross Blue Shield
    • Cigna
    • First Health
    • Health Net
    • Humana
    • Kaiser Permanente
    • Medicaid
    • Medicare
    • Midwest Health Plan
    • MultiPlan
    • Rocky Mountain Health Plans
    • Tricare
    • United Healthcare

    * Please verify this information when scheduling an appointment.

    Ratings & Reviews
    Reviews are displayed in date order and collected from patients who have agreed to reporting accurate and fair reviews. Providers with no reviews may have a new FindCare profile, or no submitted reviews on FindCare yet.

    Learn more about how FindCare's ratings and reviews work

    4.9
    Average provider rating
    Based on 125 ratings
    Patient Ratings (125)
    5 Star
    (120)
    4 Star
    (2)
    3 Star
    (1)
    2 Star
    (1)
    1 Star
    (1)
    Leave a review

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    Dr. Barnett's Office & Staff

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    • Total wait time (waiting & exam rooms)

    Experience with Dr. Barnett

    • Level of trust in provider's decisions
    • How well provider explains medical condition(s)
    • How well provider listens and answers questions
    • Hpends appropriate amount of time with patients

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    About Dr. John Barnett, MD

    Specialties*
    • Medical Oncology

    • *Healthline does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.
    Specialties*
    Years of Experience
    • 24 years of experience
    Years of Experience
    Years of experience represents how long a provider has been practicing in their field since graduating from medical school. Not all providers will have this information available.

    Languages Spoken
    • English
    Languages Spoken
    NPI Number
    • 1952341273
    NPI Number
    A National Provider Identifier (NPI) is a unique 10-digit identifier issued by the government to healthcare providers.

    Education & Certifications

    Residency
    • Brown University / Rhode Islan
    Residency
    Medical Education
    • Southern Illinois University School of Medicine
    Medical Education
    Board Certifications
    • Hematology and Medical Oncology
    Board Certifications
    What’s a board certification and why is it important that my provider has one?

    A board certification represents a provider’s dedication to ongoing training in one or more specialties, including the completion of intensive exams. While not all specialties have board certifications, if your provider does have one they’ve taken the extra step to master their specialty and to keep up with the latest advancements in their field.

    Frequently Asked Questions

    Dr. John Barnett, MD is accepting new patients on Healthline FindCare. You can check to see if Dr. Barnett is offering online scheduling or call the provider’s office for more information.

    Dr. Barnett has indicated that they do offer telehealth services. Please call the provider’s office at for more information.

    125 patients have reviewed Dr. Barnett. The overall rating for this provider is 4.9. You can read verified reviews and ratings and leave your own review based on your experience with Dr. Barnett.

    Whether a person prefers to schedule an appointment online or over the phone with Dr. Barnett, there are benefits to both methods. A person calling to schedule an with Dr. Barnett appointment can ask questions about the practice, provider availability, conditions treated, procedures performed, and if their insurance carrier is accepted. While online scheduling is quicker, easier, allows one to view a wide range of appointment times, and may provide the ability to sync with a personal calendar.

    Telehealth Options
    This provider has not specified a telehealth appointment method. Would you still like to make an appointment with Dr. Barnett, or would you like to choose another provider and have an online appointment right now?
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    Call now to make an appointment
    (303) 684-1900

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