Search

See All Oncologists in Longmont, CO

Dr. J Mark Barnett, MD

Medical Oncology* Age 53
Dr. J Mark Barnett, MD
4.9 (136 Ratings)

Offers telehealth

Share
icon-circle-check
Link Copied!
Profile link copied to clipboard!
Dr. J Mark Barnett, MD is a Medical Oncology Specialist in Longmont, CO.
Dr. J Mark Barnett, MD
4.9 (136 Ratings)
Share
icon-circle-check
Link Copied!
Profile link copied to clipboard!

Dr. J Mark Barnett, MD

Medical Oncology* Age 53
Longmont, CO
Accepting new patients
24 years of experience

Offers telehealth

Dr. J Mark Barnett, MD is a Medical Oncology Specialist in Longmont, CO.

About

Dr. J Mark Barnett, MD is a Medical Oncology Specialist in Longmont, CO and has 24 years experience. They graduated from Southern Illinois University School of Medicine in 2000 and completed a residency at Brown University / Rhode Islan.They currently practice at Rocky Mountain Cancer Centers - Longmont and are 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. At present, Dr. Barnett received an average rating of 4.9/5 from patients and has been reviewed 136 times. Their office accepts new patients and telehealth appointments. Dr. Barnett is board certified in Hematology and accepts multiple insurance plans.

Offers Telehealth

This provider offers telehealth appointments. Call the office to schedule.

Explains Conditions Well

Patients said this doctor explains conditions well.

Trustworthy

Patients said this doctor is trustworthy.

Friendly Staff

Patients said the staff was friendly.

Easy Scheduling

Patients said scheduling was easy.

Experience Check

Enter a condition or procedure
Retroperitoneum Cancer
Lung Cancer
Bone Cancer
Retroperitoneum Cancer
Lung Cancer
Bone Cancer
Anal and Rectal Cancer
Anemia
  • View other providers who treat Anemia
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
  • View other providers who treat Melanoma
Metastatic Respiratory System Cancer
Myeloma
  • View other providers who treat Myeloma
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
Thrombocytosis
Thyroid Cancer
Tongue Cancer
Upper Digestive Tract Cancer
Urinary Tract Cancer
Uterine Cancer
Venous Embolism and Thrombosis
Vitamin B12 Anemia
Vitamin B12 Deficiency
Acquired Hemolytic Anemia
Acquired Red Cell Aplasia
Acute Leukemia
Acute Myeloid Leukemia
Adrenal Gland Cancer
Amyloidosis
Anal Cancer
Antiphospholipid Syndrome (APS)
Breast Carcinoma
Cancer of Cerebral Meninges
Cervical Cancer
Chronic Myelomonocytic Leukemia
Colon Cancer
Cutaneous T-Cell Lymphoma
Diffuse Follicle Center Lymphoma
Ductal Carcinoma in Situ
Duodenal Cancer
Endocrine Gland Cancer
Eye Cancer
Factor II Deficiency
Factor V Deficiency
Factor VII Deficiency
Factor X Deficiency
Factor XII Deficiency
Factor XIII Deficiency
Fallopian Tube Cancer
Follicular Lymphoma Grade 1
Follicular Lymphoma Grade 2
Gallbladder Cancer
Gum Cancer
Hemophilia
Hodgkin's Disease
Hypogammaglobulinemia
Hypothalamus Cancer
Illeum Cancer
Immune Thrombocytopenia
Jejunum Cancer
Laryngeal Cancer
Leukemia
  • View other providers who treat Leukemia
Leukocytopenia
Leukocytosis
Lymphocytic-Rich Hodgkins Lymphoma
Lymphocytopenia
Lymphocytosis
Lymphoma
  • View other providers who treat Lymphoma
Macroglobulinemia (incl. Waldenstrom's )
Male Breast Carcinoma
Malignant Mediastinal Tumor
Malignant Pleura Secondary
Mantle Cell Lymphoma
Marginal Zone Lymphoma
Mast Cell Diseases
Meningiomas
Metastatic Breast Cancer
Multiple Sclerosis (MS)
Mycosis Fungoides
Myelodysplastic Syndromes
Neoplasm of Gastrointestinal Tract
Nerve Sheath Tumors
Nodular Lymphocyte-Predominant Hodgkin Lymphoma
Nodular Sclerosis Hodgkins Lymphoma
Penile Cancer
Penile Carcinoma
Peripheral T-Cell Lymphoma
Pleura Cancer
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

Insurance Accepted

* Please verify this information when scheduling an appointment.
  • Aetna HMO
    Choice Plus POS II
    Whole Health Colorado Front Range
  • Balanced Pathway-CO EPO
    Balanced Pathway-CO HMO
    Balanced-CO PPO
    Blue Priority-CO HMO
    Blue Priority-CO PPO
    Bronze Colorado PPO
    Bronze Pathway (Pathway / Individual)-CO HMO
    Bronze Pathway (Pathway / Small Grp)-CO HMO
    Bronze Pathway w/HSA-CO EPO
    Bronze Pathway X (Pathway / Individual)-CO HMO
    Bronze Pathway-CO EPO
    Catastrophic (Individual)-CO PPO
    Catastrophic Pathway (Pathway / Individual)-CO HMO
    Catastrophic Pathway X (Pathway / Individual)-CO HMO
    CO Pathway (Select Network)-CO
    Colorado College-CO
    Colorado HMO
    Colorado POS
    Colorado PPO
    CSU Fort Collins-CO
    CU Health Plan - Extended-CO
    CU Health Plan - High Deductible/HSA Compatible-CO
    CU Health Plan - Medicare-CO
    Gold Colorado PPO
    Gold Pathway (Pathway / Individual)-CO HMO
    Gold Pathway (Pathway / Small Grp)-CO HMO
    Gold Pathway w/HSA-CO EPO
    Gold Pathway X (Pathway / Individual)-CO HMO
    Gold Pathway-CO EPO
    Healthy Blue Priority 1-CO HMO
    Healthy Blue Priority with HSA 1-CO
    Healthy Support 1-CO PPO
    Healthy Support with HSA 1-CO PPO
    Indemnity (Traditional)-CO
    Lumenos plans-CO
    Lumenos-CO PPO
    MediBlue Plus-CO HMO
    National (BlueCard Basic) PPO
    National (BlueCard) PPO
    Non-HMO- HSA, HRA and HIA+-CO
    Pathway PPO/EPO-CO
    Pathway-CO HMO
    Platinum Pathway (Pathway / Small Grp)-CO HMO
    Platinum Pathway-CO EPO
    Platinum-CO PPO
    Silver Pathway (Pathway / Individual)-CO HMO
    Silver Pathway (Pathway / Small Grp)-CO HMO
    Silver Pathway w/HSA-CO EPO
    Silver Pathway X (Pathway / Individual)-CO HMO
    Silver Pathway-CO EPO
    Silver-CO PPO
    Traditional Network-CO
    University of Colorado Extended PPO
    University of Colorado High Deductible PPO
    University of Colorado Medicare-CO
    WellChoice - C (Select Network)-CO
    WellChoice - C-CO
    WellChoice - H (Select Network)-CO
    WellChoice - H-CO
    WellChoice - U (Select Network)-CO
    WellChoice - U-CO
  • Anthem Blue Cross Blue Shield PPO
  • Blue Card PPO
  • Medicare
  • HealthyBlue 2.0
    HealthyBlue Advantage
  • Cigna HMO
    Cigna PPO
    LocalPlus
    Open Access Plus
  • First Health (Coventry Health Care)
    First Health (Coventry Health Care) PPO
  • Tricare
  • Choice Care PPO
  • Medicaid
  • MultiPlan PPO
  • Basic Plan

Locations

  1. 1 Rocky Mountain Cancer Centers - Longmont
    1760 E Ken Pratt Blvd Ste 302, Longmont, CO 80504

Patient Satisfaction

Likelihood to recommend Dr. Barnett
4.9
Based on 136 Reviews
5 Stars (131)
4 Stars (2)
3 Stars (1)
2 Stars (1)
1 Star (1)

Leave a review

How likely are you to recommend Dr. Barnett?

(Select your rating)
Patient Reviews
May 12, 2024
Dr and staff are honest, caring & comforting - under my circumstances I can't think of anythingthey haven't done for me.
— May 12, 2024
See more reviews on Healthgrades
Photo: Dr. J Mark Barnett, MD
How would you rate your experience with Dr. J Mark Barnett, MD?
  • Likelihood of recommending Dr. Barnett to family and friends

Dr. Barnett's Office & Staff

  • Ease of scheduling urgent appointments
  • Office environment, cleanliness, comfort, etc.
  • Staff friendliness and courteousness
  • 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

Tell Us About Yourself

  • Your gender:
  • Your age group:
  • Number of office visits you've had in the last 2 years:

Finish Here

  • How would you like to confirm your survey information?
    Standard text messaging and data rates may apply.
Thank you for sharing your feedback about Dr. J Mark Barnett, MD.
Claim Your Profile
Are you Dr. J Mark Barnett, MD?
Respond to reviews, add information, and reach more patients. Claiming is free and only takes a minute.

Claim my profile
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?
Find provider online now
Call now to make an appointment
(303) 684-1900

About Me

Specialties*
Medical Oncology
Hematology & Oncology
Hematology
Oncology
Specialties*
  • *Sharecare does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.
Education

Education

Medical Education
  • Southern Illinois University School of Medicine
    2000
Medical Education

Board Certifications

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.

Residency

Residency Hospital
  • Brown University / Rhode Islan
Residency Hospital
Common Questions and Answers
Responses are sourced directly from patients.
Does Dr. Barnett communicate via email?
15 users said yes.
Yes
(15)
No
(2)
Does Dr. Barnett offer telehealth services or virtual visits?
11 users said yes.
Yes
(11)
No
(4)
Does Dr. Barnett offer an online patient portal?
24 users said yes.
Yes
(24)
No
(1)
Does Dr. Barnett have free onsite parking?
30 users said yes.
Yes
(30)
No
(0)
Does Dr. Barnett offer weekend visits?
No users said yes.
Yes
(0)
No
(11)
Does Dr. Barnett offer evening visits?
2 users said yes.
Yes
(2)
No
(7)
Does Dr. Barnett specialize in working with children or adolescents?
No responses yet.
Yes
(0)
No
(0)
Does Dr. Barnett specialize in working with seniors?
No responses yet.
Yes
(0)
No
(0)
Does Dr. Barnett specialize in couples therapy?
No responses yet.
Yes
(0)
No
(0)
Does Dr. Barnett specialize in working with LGBTQ+ community?
No responses yet.
Yes
(0)
No
(0)
Does Dr. Barnett accept insurance?
No responses yet.
Yes
(0)
No
(0)

Frequently Asked Questions

Find contact information here to make an appointment.

A list of accepted insurance providers is available on the Sharecare insurance check. It is always a good idea to verify your insurance when making an appointment.

New patients are generally accepted by Dr. J Mark Barnett, MD. To arrange an appointment, call the number on Dr. Barnett's profile.

Dr. J Mark Barnett, MD 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.

Yes, Dr. J Mark Barnett, MD holds board certification in Hematology and Medical Oncology.

Hospital Affiliations

  • Avista Adventist Hospital

    100 Health Park Dr, Louisville, CO

  • Foothills Hospital

    4747 Arapahoe Ave, Boulder, CO

  • Good Samaritan Medical Center

    200 Exempla Cir, Lafayette, CO

  • Longmont United Hospital

    1950 Mountain View Ave, Longmont, CO

  • North Suburban Medical Center

    9191 Grant St, Thornton, CO

  • St. Anthony Hospital

    11600 W 2nd Pl, Lakewood, CO

  • St. Anthony North Hospital

    14300 Orchard Pkwy, Westminster, CO

  • Lutheran Medical Center

    8300 W 38th Ave, Wheat Ridge, CO

  • UCHealth Longs Peak Hospital

    1750 E Ken Pratt Blvd, Longmont, CO