Our Team

Doctors discussing treatment with thyroid patient
Dr. Matthew Taylor (left) and Timothy Smith, a physician assistant, are part of OHSU's team of specialists who care for thyroid cancer patients. Dr. Taylor is a medical oncologist, an expert in using chemotherapy and other medications to treat cancer.

The OHSU Knight Cancer Institute’s thyroid specialists bring extensive expertise to caring for patients with thyroid and parathyroid tumors. We offer you:

  • Team-based care: Doctors from different specialties and specialized nurses work together to give you the best treatment possible.
  • Experience and innovation: Our surgeons, endocrinologists (doctors who treat hormone conditions) and medical oncologists are among the Northwest’s most experienced. They treat hundreds of patients a year.
  • Complete care: We provide full follow-up care. This might include monitoring exams, hormone-replacement therapy or other services.
  • The latest research: With access to Oregon’s only endocrine tumor database, our doctors and scientists work to better understand your cancer and to improve diagnosis and treatment methods.
Surgery and surgical oncology

Maisie L. Shindo, M.D., F.A.C.S.Maisie L. Shindo, M.D., F.A.C.S., is the surgical director of OHSU’s Thyroid and Parathyroid Center. She is a head and neck cancer surgeon with expertise in thyroid tumors and nodules, and parathyroid tumors. She has gained national recognition for her work in thyroid cancer surgery and minimally invasive parathyroid surgery. She completed a fellowship in head and neck oncology at Northwestern University Hospital.


Ryan J. Li, M.D.Ryan J. Li, M.D. is a surgeon with expertise in thyroid and parathyroid conditions, including a deep interest in treating aggressive thyroid cancers. He offers exceptional experience in minimally invasive parathyroid surgery and in microvascular reconstructive surgery. He also has expertise in a robotic technique for neck surgery. He completed a fellowship in microvascular reconstruction at Stanford University.


James Lim, M.D.James Lim, M.D., is a surgical oncologist whose expertise includes thyroid, parathyroid, adrenal and neuroendocrine diseases. He is highly trained in minimally invasive techniques. Dr. Lim completed a fellowship in endocrine surgery at Columbia University Medical Center.


Lourdes Quintanilla-Dieck, M.D.Lourdes Quintanilla-Dieck, M.D., is a pediatric otolaryngologist who focuses on treating thyroid and parathyroid cancers in children and adults, and voice disorders in children. She also performs ultrasounds and ultrasound-guided thyroid biopsies. Dr. Quintanilla-Dieck completed a fellowship in pediatric otolaryngology at Vanderbilt University.


Peter E. Andersen, M.D., F.A.C.S.Peter E. Andersen, M.D., F.A.C.S., is a head and neck surgeon. He is also an expert in nonsurgical treatments such as chemotherapy and radiation, and in reconstructive and rehabilitation techniques. Dr. Anderson completed a fellowship in head and neck surgery and oncology at Memorial Sloan Kettering Cancer Center.


Daniel Robert Clayburgh, M.D., Ph.D., F.A.C.S.Daniel Robert Clayburgh, M.D., Ph.D., F.A.C.S., is a head and neck surgeon. His expertise includes thyroid and parathyroid surgery, otolaryngology (ear, nose and throat) and minimally invasive skull base surgery. He is an expert in a type of robotic neck surgery. Dr. Clayburgh completed a fellowship in advanced head and neck surgical oncology at the University of Pittsburgh.


Dana Madison, M.D., Ph.D.Dana Madison, M.D., Ph.D., is the medical director of OHSU’s Thyroid and Parathyroid Center. He is an endocrinologist who monitors and treats thyroid cancer. His research interests include the molecular workings of how tumors spread. Dr. Madison completed a fellowship in endocrinology at OHSU.


Mary H. Samuels , M.D.Mary H. Samuels, M.D. is an endocrinologist whose clinical and research interests include pituitary tumors, thyroid disorders, thyroid cancer and diabetes. After receiving her medical degree from Harvard Medical School, Dr. Samuels completed her residency and a fellowship in endocrinology at the University of Colorado.


Dr. Kathryn Schuff, M.D., M.C.R.Kathryn Schuff, M.D., M.C.R., is an endocrinologist who specializes in thyroid cancer and diabetes. Her research is aimed at improving the diagnosis and treatment of pituitary and thyroid tumors, Cushing syndrome and pituitary hormone deficiencies. Dr. Schuff heads OHSU’s Institutional Review Board, which monitors and approves biomedical and behavioral research involving people. She completed a fellowship in endocrinology at OHSU.


Olga  Senashova , M.D.Olga Senashova, M.D., is an endocrinologist with expertise in thyroid cancer. She completed a fellowship in endocrinology, diabetes and metabolism at OHSU.

Medical oncology

Matthew Taylor, M.D.Matthew Taylor, M.D., is a medical oncologist, a doctor who treats cancer with medications. He specializes in advanced thyroid cancer and melanoma. Dr. Taylor serves as program director of the Knight Cancer Institute's Phase 1 clinical trials. He completed a fellowship in hematology and medical oncology at OHSU.

Radiation oncology

John M. Holland, M.D.John M. Holland, M.D., is a radiation oncologist, a doctor who treats cancer with radiation therapy. Dr. Holland, who focuses on head, neck and thoracic tumors, completed his residency at the University of California-San Francisco.

Ear, nose and throat (otolaryngology)

Voice and speech (laryngology)

Dr. Paul W. Flint, M.D.Paul W. Flint, M.D., is a laryngologist, a type of otolaryngologist who specializes in voice and speech disorders. He also focuses on head and neck cancer. His research interests include gene therapy for voice box (larynx) paralysis to help nerves regenerate, and the use of micro-robotics in voice box surgery. Dr. Flint completed a fellowship at Guy’s Hospital in London.


Dr. Joshua Schindler, M.D.Joshua Schindler, M.D., is a laryngologist, an otolaryngologist who specializes in voice and speech disorders. His clinical and research interests include voice, swallowing and breathing disorders, and vocal cord cancers and disorders. Dr. Schindler completed a fellowship in head and neck surgery at Johns Hopkins University.

Other specialties


David Sauer, M.D.


Natalie Smith, L.P.N.