Our Staff

Our specialists in poison information are experienced nurses and pharmacists with backgrounds in mother-child care, emergency, critical care, as well as intensive care. Many of our specialists have completed a certification program created by the American Association of Poison Control Centers.

Our center has 16 board-certified medical toxicologists and 4 toxicology fellows who provide medical backup to the call center staff.

The Oregon Poison Center staff uses their experience, training, an extensive library of medical toxicology literature, as well as computerized resources including: POISINDEX®, Tomes®, Tomes Plus® and Identidex®.

Please visit our Poison Prevention Education page to learn more about our public education, outreach and community-based efforts.

Administrative Staff

Department Director

Charisse Pizarro-Osilla, R.N., M.S., CSPI

Medical Director

Associate Medical Director

Nurse Manager

Anne Duncan, RN, CSPI

Community Outreach Educator

Jennifer Eskridge, M.P.H., MCHES®

Administrative Coordinator

Rachel Nelson

A poison specialist takes a call in in the poison center call room at OHSU
A poison specialist takes a call in the poison center call room

Clinical Staff


Amy, R.N., CSPI

Beth, R.N., CSPI

Brian, R.N., SPI

Destiny, R.N., CSPI

Hope, R.N., CSPI

Jessica, R.N., SPI

Kiersten, R.N., CSPI

Leslie, R.N., CSPI

Lisa, R.N., CSPI

Liz, R.N., SPI

Loren, R.N., CSPI

Mallory, R.N., CSPI

Marc, R.N., SPI

Mary, R.N., CSPI

Mercedes, R.N., CSPI

Miguel, R.N., CSPI

Mike U., R.N., SPI

Rachel, R.N., CSPI

Roberta, R.N., CSPI

Salwa, R.N., CSPI

Samantha, R.N., CSPI

Shelbi, R.N., SPI

Tammy, R.N., CSPI


Allen, Pharm.D., SPI

Faye, Pharm.D., CSPI

Jaci, Pharm.D., CSPI

Mike L., Pharm.D., CSPI

Tuan, Pharm.D., CSPI

Second-year fellows

Emma Cassidy, M.D.

Samy Chettat, M.D.

First-year fellows

Colleen Cowdery, M.D.

H. Keahi M. Horowitz, M.D.