Office Hours

Monday – Friday 8:30 – 5:00

For Patients

Welcome to the Oregon Melanoma Center, a full service melanoma clinic. View more for information about insurance, billing, registration forms and other helpful tools.

Preparing for your 1st Appointment

• Be aware of insurance requirements
• Write down any symptoms you’re experiencing
• Make an accurate list of all medications
• Bring a family member or friend along

Welcome to Oregon Melanoma Center

Dr. Trezona is a practicing surgical oncologist in Eugene/Springfield area since 1995. He trained in Houston, Texas with one of the pioneers in melanoma research and continues to practice comprehensive surgical and medical oncology for these 20 years with an emphasis on melanoma care. He has witnessed the rapid increase in melanoma in our country, particularly in Oregon. This has lead to a calling to develop the Oregon Melanoma Center to focus entirely on the evaluation, treatment, education, and ultimately prevention of this devastating disease.

  • Melanoma Surgery
  • Immunotherapy
  • Targeted Therapy
  • Chemotherapy
  • Sarcoma
  • Melanoma
  • Basal Cell Carcinoma
  • Squamous Cell Carcinoma
  • Merkel Cell Carcinoma
  • Metastatic Disease

About Us

melanoma clinic
Dr. Trezona’s warm bedside manner.

    At the OMC we specialize in evaluation and treatment of all skin cancers and we do it with great skill and compassion. Our team has been taking care of people with cancer in a personal and compassionate way for 20 years. Upon arrival at our warm and inviting office our friendly and knowledgeable staff will put you at ease right away. While located in Springfield, we see patients from Southern Oregon, the Willamette Valley, the Oregon Coast, California, and Hawaii.
    Whether suspicion of melanoma or other skin cancer, confirming a diagnosis, requiring melanoma or other skin cancer surgery, utilizing targeted therapies, immunotherapy or chemotherapy, Dr. Trezona and his team bring a commitment to the highest quality of cancer care to patients and their families.

OMC is a warm and inviting clinic where timely appointments are the norm, personalized care is provided in every encounter, and innovative and exceptional treatment is the standard.

Meet OMC

  • Dr. Trezona

    Dr. Tom Trezona

        36 years experience
  • Jaime Steenkolk

    Jaime Steenkolk

       28 years experience
    View All →

Signs and Symptoms of Melanoma


A is for asymmetrical shape. Look for moles with irregular shapes such as 2 very different looking halves.


Look to see if the mole or lesion has an irregular border. These could be borders that are irregular, notched, or scalloped.


Look for changes in color. Look for moles or lesions that have many colors or an uneven distribution of color.


Look for new growth in a mole larger than ¼ inch (about 6 millimeters)


i.e. changing over time. Suspicious symptoms in a mole may include: itching, oozing, bleeding, or a sore that does not heal. Rarely is pain involved.