Alaska Native Epidemiology Center

ANTHC Alaska Native Epidemiology Center photos of EpiCenter staff

About Us

The Alaska Native Epidemiology Center (EpiCenter) is located within the Alaska Native Tribal Health Consortium's (ANTHC) Community Health Services, in Anchorage, Alaska.

The EpiCenter provides public health and epidemiologic services to tribal health organizations and the tribal communities they serve.

ANTHC provides the highest quality health services for Alaska Native and American Indian people at the Alaska Native Medical Center and across Alaska through training, health education, disease and injury prevention, and rural water and sewer construction.

EpiCenter Staff

Dr. Ellen Provost photo

Ellen Provost, DO, MPH

EpiCenter Director

Dr. Provost has served the Alaska Tribal Health System for over 25 years, and has been Director since 2005. She arrived in Bethel in 1990 to work with YKHC as a Commissioned Officer in the US Public Health Service. She is a physician specializing in Preventive Medicine and Public Health, and has an MS in Biomedical Informatics.

Dr. Carla Britton photo

Carla Britton, PhD

Lead Epidemiologist

Dr. Britton came to the EpiCenter after completing a two year CDC Epidemic Intelligence Service fellowship with the Idaho Department of Health and Welfare. Carla holds an MS in Environmental Health and a PhD in epidemiology from the University of Iowa.

Nanette Star photo

Nanette Star, MPH

Senior Epidemiologist

Ms. Star joined the EpiCenter in 2018. She serves as Program Manager of the Tribal Epidemiology Centers' Public Health Infrastructure grant. A descendant from the Choctaw Nation of Oklahoma, she holds an MPH in Global Health and a Graduate Certificate in Epidemiology.

Sarah Nash photo

Sarah Nash, PhD, MPH

Cancer Surveillance Director

Dr. Nash joined the EpiCenter in 2015. She serves as the Director of the Alaska Native Tumor Registry and the Principal Investigator for the Alaska Surveillance, Epidemiology and End Results (SEER) Program of the National Cancer Institute. She holds a PhD in Biological Sciences, and an MPH.

Dr. Diana Redwood photo

Diana Redwood, PhD

Senior Epidemiologist

Joining ANTHC in 2004, Dr. Redwood conducts research studies on colorectal cancer screening methods and prevention. Diana holds a PhD in public health, an MPH, and an MS in Nutrition.

Erin Peterson photo

Erin Peterson, MPH

Senior Epidemiologist

Ms. Peterson joined the EpiCenter in 2015. She specializes in chronic disease prevention, and manages the Wellness Strategies for Health (WSH) program. Erin holds an MPH from Emory University.

Dr. Kristen Mitchell photo

Kristen Mitchell, DrPH

Senior Program Manager

Dr. Mitchell joined the EpiCenter in 2015 and is currently serving as the Senior Program Manager for the Network Coordinating Center for the Tribal Epidemiology Centers' Public Health Infrastructure Program. Kristen holds a DrPH in Public Health and an MPH.

Taija Revels photo

Taija Revels, MPH

Senior Progam Manager

Ms. Revels joined the EpiCenter in 2017. She manages the national Coordinating Center for GHWIC. She belongs to the Kaagwaataan Lingít clan in southeast Alaska. She holds an MPH from Columbia University, and a CPH.

Tim Collins photo

Tim Collins, MPH, MS


Mr. Collins joined the EpiCenter in 2018 as an epidemiologist supporting substance use-related initiatives. He holds an MPH in biostatistics and epidemiology from the Keck School of Medicine, University of Southern California, and an MS in psychology. He is a member of the Sault Ste. Marie Tribe of Chippewa Indians.

Daisy Karasti photo

Marissa Palmer, MFA, BA

Program Coordinator

Ms. Palmer joined the EpiCenter in 2019 as the Program Coordinator for the State Physical Activity and Nutrition (SPAN) program, which aims to improve access to healthy food and beverage options in Alaska Tribal Health facilities. Marissa holds a BA in English and an MFA in Creative Writing.

Weather Potdevin photo

Weather Potdevin, MA

Program Evaluator

Ms. Potdevin joined the EpiCenter in 2018. She is the Program Evaluator for the Wellness Strategies for Health program and the Tribal Epidemiology Centers' Public Health Infrastructure program. She grew up in Juneau, and is Koyukon Athabascan. Weather holds an MA in Program Evaluation.

Rochelle Greenley photo

Rochelle Greenley, BAS

Program Associate

Ms. Greenley joined the EpiCenter as a Patient Navigator in 2013, and has been with ANTHC since 2004. Rochelle grew up in the Yup'ik village of Togiak. She holds a BAS in Environmental Studies.

Keri Miller photo

Keri Miller, BS, CTR

Tumor Registrar II

Ms. Miller joined the Alaska Native Tumor Registry in 2020. In her role as SEER Program Manager she collects cancer information for Alaska Native people statewide, and oversees the registry's data management system. She holds a BS in Health Promotion and is working towards her Master's in Health Administration.

Garrett Zimpelman photo

Garrett Zimpelman, BA


Mr. Zimpelman joined the EpiCenter in 2016 as a Computer Programmer/Analyst for the Alaska Native Tumor Registry (ANTR). Garrett’s duties include data management, database design and implementation, computer programming, and data analysis.

Daisy Karasti photo

Donna Carlo, BA, CPC-A

Program Associate

Ms. Carlo joined the EpiCenter in 2018. She provides administrative support to the Alaska Native Tumor Registry. Donna is part Athabascan. She has a BA in Psychology, is a Certified Medical Coder (with Apprentice status) thru AAPC, and received her Health Information Management/Coding Specialist certificate in 2009.

Ian Blake photo

Ian Blake, MS


Mr. Blake joined the EpiCenter in 2014, providing statistical and database support to a variety of EpiCenter projects. His background includes healthcare, fisheries, education, and environmental research. Ian holds an MS in Statistics.

Christine Tait photo

Christine Tait, BS

Senior Marketing Media Specialist

Ms. Tait joined the EpiCenter in 2015, bringing more than 20 years of graphic design experience. She provides website, graphic design, photography, illustration, and social media support. Christine holds a BS in Visual Communication/Graphic Design.

Matthew Bailey photo

Matthew Bailey, BFA

Marketing Media Web Specialist

Mr. Bailey joined the EpiCenter in 2015. He provides website and graphic design support for EpiCenter projects including the Network Coordinating Center. Matthew holds a BFA in Visual Communication with a Graphic Design emphasis.

Daisy Karasti photo

Crystal Bruns, BS

Associate Health Statistician

Ms. Bruns joined the EpiCenter in 2019. She provides support for the Tribal Epidemiology Centers' Public Health Infrastructure grant. Crystal holds a BS in Mathematics.

Ann Hansell photo

Ann Hansell

Program Administrator

Ms. Hansell joined the EpiCenter in 2017. She provides administrative support for the EpiCenter. Ann is from the Inupiaq village of Shaktoolik in the Bering Strait region.

Daisy Karasti photo

Daisy Karasti

Program Administrator

Ms. Karasti joined the EpiCenter in 2018. She provides administrative support to the Wellness Strategies for Health program. Daisy is a Tlingit Indian from Sitka, Alaska.

Amie Haakenson photo

Amie Haakenson

Senior Office Specialist

Ms. Haakenson joined the EpiCenter in 2010. Amie provides administrative support for EpiCenter projects.

Annie Okpealuk photo

Annie Okpealuk

Senior Office Specialist

Ms. Okpealuk joined the EpiCenter in 2014. Annie provides administrative support for the Tribal Epidemiology Centers' Public Health Infrastructure grant. Annie is Inupiaq and Athabaskan.

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