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Dr. Mark Fesler, MD

Dr. Mark Fesler, MD

Age 45 Hematology & Oncology M
(6) 6 reviews

Telehealth available

Accepting New Patients


Dr. Mark Fesler, MD is a Hematology & Oncology Specialist in Chesterfield, MO. Dr. Fesler studied at Saint Louis University / School of Medicine. They currently practice at St. Luke's Center for Cancer Care and are affiliated with St. Luke's Hospital, Labette Health and Ssm Health Saint Louis University Hospital. Dr. Fesler accepts multiple insurance plans.


  • St Louis U, Fellowship Hospital — 2010
  • University of Colorado Health Science Center, Internship Hospital — 2004
  • Saint Louis University / School of Medicine, Medical School — 2003
  • Saint Louis University, Saint Louis, Mo, Medical School — 2003

Insurance Accepted

  • Aetna
  • Anthem
  • Anthem Blue Cross Blue Shield
  • Blue Cross Blue Shield
  • CareFirst Blue Cross Blue Shield
  • Cigna
  • Coventry Health Care
  • First Health
  • HAP Insurance
  • Humana
  • MultiPlan
  • UnitedHealthCare

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These providers are on the medical staff of Mayo
These providers are on the medical staff of Mayo.

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Feb 02, 2023
I was diagnosed with a very large mass of cancer on my Spleen. At St. Lukes Dr. Mark J Fesler recommended a treatment that was relatively new. It was a six month treatment to diffuse large B Cell Lymphoma. After only 3 months the mass had receded by 60 to 70 percent. After the treatment was over my cancer was gone. This was started in about 3-1-2022 and over around 9-1-2022 and as of today I still have no sign of it returning. Dr. Mark Fesler is a Specialist in this field and if you have cancer I highly recommend you seeking his advice. He saved my life and he can do the same for you.
David R Pullen — Feb 02, 2023
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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. Mark Fesler, MD. To arrange an appointment, call the number on Dr. Fesler's profile.

Dr. Fesler frequently treats the following conditions: Lymphosarcoma, Reticulosarcoma, Lymphoma and Large-Cell. See more on Sharecare.

Dr. Mark Fesler, MD is affiliated with St. Luke's Hospital, Labette Health and Ssm Health Saint Louis University Hospital.

Hospital Affiliations

  • St. Luke's Hospital
  • Labette Health
  • Ssm Health Saint Louis University Hospital


  1. St. Luke's Center for Cancer Care

    1. 1
      St. Luke's Center for Cancer Care
      232 S Woods Mill Rd Ste 330, Chesterfield, MO 63017 (314) 205-6737
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(314) 205-6737