Oregon Medical Providers

The following medical providers have experience treating families with hereditary colon cancer syndromes. ​We cannot make recommendations about specific physicians, attest to the credentials of these providers, nor do we evaluate their competency to practice. Furthermore, their inclusion on this website, or any referral to a provider from the Hereditary Colon Cancer Foundation, should not be considered an endorsement of any type. 


If you do not see​ providers ​near you, we can still help. Click​ HERE for names of​ genetic​ counselors who offer phone and web-based counseling. Or, if you give us some information about yourself and/or your family member(s), and tell us where you are located, we will do our best to find someone near you. Click HERE to contact us.

If you are a ​provider, experienced in treating patients with Hereditary Colon Cancer Syndromes, click ​HERE to register.



Cancer Risk Assessment and Genetic Testing (503) 245-6516

Nancy Ledbetter, RN, CNS, APNG, AOCNS


Compass Oncology (503) 297-7403

Lucy Langer, MD, Medical Oncologist

Becky Clark, Genetic Counselor MS CGC

Lisa Clark, FNP, AOCNP, APNG


Oregon Health & Science University (503) 494-9300

Brianne Baier, Genetic Counselor

Megan Chirpich, Oncology Genetic Counselor

Kelly Hamman, MS, Certified Genetic Counselor

Daniel O. Herzig, MD, Surgeon

Sancy Leachman, MD, PhD, Chair of the Department of Dermatology

Charles Lopez, MD, PhD, Medical Oncologist

Jone Sampson, MD, Clinical Geneticist

V. Liana Tsikitis, MD, MCR, FACS, FASCRS, Surgeon

Gina M. Vaccaro, MD, Medical Oncologist

Wojciech Wiszniewski, MD, PhD, Clinical Geneticist