Dr. J. Mark Barnett

5.0 ( 14 reviews )

Staff

Punctuality

Helpfulness

Knowledge

Office Hours
  • Monday 07:30 AM - 04:30 PM
  • Tuesday 07:30 AM - 04:30 PM
  • Wednesday 07:30 AM - 04:30 PM
  • Thursday 07:30 AM - 04:30 PM
  • Friday 07:30 AM - 04:30 PM
  • Saturday Closed
  • Sunday Closed
  • Rate This Doctor

    Ratings for Dr. J. Mark Barnett

    5
    Staff
    5
    Punctuality
    5
    Helpfulness
    5
    Knowledge

    Dr. Barnett is always very professional and makes me very comfortable in his care. He is caring and always explains what's going on with all tests and treatments so I can understand. He is a great doctor.

    Submitted Nov. 18, 2022

    5
    Staff
    5
    Punctuality
    5
    Helpfulness
    5
    Knowledge

    Dr.Barnett is direct . He makes me feel like I am his number 1 priority. I am confident that I am receiving the the best up to date care under his supervision!

    Submitted Nov. 11, 2022

    5
    Staff
    5
    Punctuality
    5
    Helpfulness
    5
    Knowledge

    A very caring doctor. He listens to me and always takes the time to be 100% at my appointment. He sees me as a person, not just another case. I wouldn’t see anyone else.

    Submitted Nov. 11, 2022

    5
    Staff
    5
    Punctuality
    5
    Helpfulness
    5
    Knowledge

    He has been treating me for 2 years and when a prescription stops doing its job he searches for another to fight my illness. He is so enthusiastic about finding the one that will help me

    Submitted Nov. 10, 2022

    5
    Staff
    5
    Punctuality
    5
    Helpfulness
    5
    Knowledge

    Been patient of his for 10 years. Always enjoy our visits He’s managed to keep me upright all these years despite this nasty cancer. I’ve placed my life in his hands and felt very comfortable doing so.

    Submitted Nov. 4, 2022

    5
    Staff
    5
    Punctuality
    5
    Helpfulness
    5
    Knowledge

    Dr Barnett is great!I can't ask for any better. He makes me feel that I am in good hands. Very trustworthy.

    Submitted Nov. 3, 2022

    5
    Staff
    5
    Punctuality
    5
    Helpfulness
    5
    Knowledge

    He is straight forward , listens to what you say and is knowledgeable as an oncologist.

    Submitted Nov. 2, 2022

    5
    Staff
    4
    Punctuality
    5
    Helpfulness
    5
    Knowledge

    Mark is a leader in his field and will do whatevere he has in his power to serve his patients. Note here he is not a one man show. All the staff at the clinic have been more than simply care givers. They work as a team and all of thos I have dealt with display the same traits as does Mark. Thank you so Very Much..

    Submitted Oct. 30, 2022

    5
    Staff
    5
    Punctuality
    5
    Helpfulness
    5
    Knowledge

    Dr. Barnett is very personable and we've appreciated his informative consultations.

    Submitted Oct. 29, 2022

    5
    Staff
    5
    Punctuality
    5
    Helpfulness
    5
    Knowledge

    I enjoy Dr. Barnett. He’s an excellent dr and his bedside manner is one of a kind! So nice and concerning and always has expertise advice. His staff is superior. They all take good care of their patients!

    Submitted Oct. 25, 2022


    Dr. J. Mark Barnett's Credentials

    Accepting New Patients

    Yes, this doctor is accepting new patients

    Biography

    J. Mark Barnett, MD, is a board-certified medical oncologist with Rocky Mountain Cancer Centers, providing comprehensive cancer care in the Longmont area. Dr. Barnett attended medical school at Southern Illinois University School of Medicine in Edwardsville, IL. His specialties are Medical Oncology, Breast Cancer, Gastrointestinal Cancer, Genitourinary Cancers and Lymphoma. Dr. Barnett is part of a team of over 50 physicians at RMCC providing advanced cancer care in communities across the state. He collaborates with specialists in all areas of cancer diagnostics and treatment including medical oncology, radiation therapy, surgery, immunotherapy, genetic testing, clinical trials and supportive care to offer patients a coordinated and comprehensive care plan. As an additional strength, RMCC is part of The US Oncology Network, one of the nation's largest networks of integrated community-based oncology practices dedicated to advancing high-quality, evidence-based patient care.

    Education

    • Southern Illinois Univ School of Medicine (Grad. 2000)

    Other Specialties

    Areas of Expertise

    • Extra Corporeal Shockwave Therapy
    • Multiple Sclerosis (ms)
    • Leukemia
    • Multiple Myeloma
    • Prostate Cancer
    • Immunodeficiency
    • Lymphoma
    • Colon Cancer
    • Breast Cancer
    • Anal Cancer
    • Anemia