When you
hear the word



When you
hear the word



OHC Cancer Specialists

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With more than 50 cancer providers, OHC has the most experienced team of cancer experts in the region.

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OHC’s cancer and blood disorders specialists are nationally recognized for their expertise.

Search by Location

OHC provides many locations conveniently located throughout the region.

There is nothing fair about cancer.

At OHC, our renowned cancer experts attack your cancer using the most advanced approaches and therapies, while our nationally recognized clinical research team constantly searches for the newest, most promising treatments.

What condition have you been diagnosed with

We are the region’s leading experts in the treatment of adult cancers and complex blood disorders.

Cancer Treatments and Services

OHC offers the latest medical, gynecologic and radiation treatments to aggressively attack your cancer or blood disorder.

Clinical Trials

OHC’s nationally-recognized clinical trials team is passionately engaged in bringing innovative treatments to patients.

Patient Testimonials

“When making that hard and difficult decision of whom you want to manage your treatment for cancer - I highly recommend that you seriously consider using Dr. Mark Johns for your care. Dr. Johns has that rare combination of complete knowledge of what to do- from years of work in oncology, but he also has that special right personality, to gracefully and positively guide you through your cancer treatment. His staff is amazing and so thoroughly supportive of you. If you have a choice -choose OHC. When asked how did it all go-my answer is simple-Dr. Johns saved my life. I am now cancer free. Dr. Johns and his team at OHC are the people you want to take you through this most difficult time. There are no better. You will be so happy you chose them.”

- A.S., February 2021

To read more patient testimonials, please visit our doctors' profile pages.

A patient's story about his surprising source of support.

Video Story Library

OHC Treatment Suite Nurse Honored with Florence Nightingale Award Nomination

April 14, 2021

OHC’s own Sarah Banfill, a treatment suite nurse at our West location and resident of Bridgetown, Ohio, was recently...

Local Artist Has New Lease on Life After Beating Cancer

April 9, 2021

Marilee Klosterman never thought in 2021 she’d be present to be the featured artist in a gallery showing. In spring of...