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Meet Our Preceptors and Staff

Adam Olesen

Amanda Bitterman, PharmD, BCGP
Residency Program Director

Hometown: Mountain Home, ID

College of Pharmacy: Washington State University

PGY1: Providence St. Peter Hospital (Olympia, WA)

Learning experiences precepted: Geriatrics, Leadership, Scholarly Activity, Population Health, Service Development, and Service Enhancement

Clinical areas of interest: geriatric medicine and deprescribing

Favorite hobbies: paddle boarding, snowshoeing, and, more recently, baking (thank you, Great British Bake Off)

Exploring Washington: I love that Olympia is about an hour drive to either the ocean or the mountains.

Why I stay with Providence: I have worked with Providence for over 10 years. I feel fortunate to witness and have a role in the interdisciplinary collaboration that occurs in ambulatory care to help care for patients. Also, it doesn’t hurt that I get to work with a team makes me laugh and pushes me to keep learning as a clinical pharmacist!

Sonia Allen, PharmD, BCACP
Clinical Pharmacist

Hometown: Salt Lake City, UT

College of Pharmacy: University of Washington School of Pharmacy

Learning experiences precepted: I have precepted PGY-1, PGY-2, and students.

Clinical areas of interest: Polypharmacy has become an area of interest, identifying opportunities to improve best practice to optimize disease state outcomes.

Favorite hobby: Cooking!

Exploring Washington: Favorite WA place: the Puget sound! Love to be on the water.

Why I stay with Providence: The mission. It aligns with my Catholic faith & values. And my co-workers are the best.

Dustin Clark
Steven A. Elrod, PharmD, BCACP
Faculty Pharmacist

Alumni Class of 2016

Hometown: Kenosha, Wisconsin

College of Pharmacy: Touro College of Pharmacy

PGY1: Mayo Clinic – Ambulatory Care (Rochester, Minnesota)

PGY2: Providence St. Peter Family Medicine (Olympia, WA)

Learning experiences precepted: Family Medicine 1,2,3; Teaching; Precepting

Clinical areas of interest: interprofessional collaboration, social determinants of health, public health, psychiatry, COPD, osteoporosis

Favorite hobbies: cheering on Wisconsin sports, playing basketball, paddleboarding, crocheting, spooning with Tillamook special batch ice cream, puns and word play,running, golfing

Exploring Washington: Love trying out all the new lakes and waterways via paddleboarding. Spending time trying new breweries, and checking out all the cute little towns around Washington!

Why I stay with Providence: It is rare to find a mix of coworkers and colleagues who share similar values on healthcare and education. I have found that here in Chehalis, and appreciate how our team strives for excellence in all aspects of care.


Erik Gunderson, PharmD, BCPS
Clinical Pharmacist

Alumni Class of 2021

Hometown: Oregon, WI

College of Pharmacy: University of Iowa College of Pharmacy

PGY1: University of Kansas – Wichita and Dillons Pharmacy (Wichita, KS)

PGY2: Providence St. Peter Family Medicine (Olympia, WA)

Learning experiences precepted: Family Medicine and Leadership

Clinical areas of interest: Diabetes, psychiatry, asthma, social determinants of health

Favorite hobbies: Hiking, fishing, working out, running with my fur child (mini golden doodle), and rallying with Steven Elrod over Wisconsin sports (Bucks in 6)

Exploring Washington: Exhausting myself trying to find the best fishing hubs around Olympia area and hiking in Olympic National Park! In addition, Mount Rainier is breathtaking around later Spring.

Why I stay with Providence: The interprofessional collaboration is unlike any other program around. You are able to practice at the highest level of your license and make impactful healthcare changes while improving patient’s quality of life.

Anthony (AJ) Haberstroh, PharmD, BCACP
Clinical Pharmacist

Hometown: Pendleton, OR

College of Pharmacy: Pacific University

PGY1: Providence St. Peter Hospital (Olympia, WA)

Learning experiences precepted: Advanced Anticoagulation

Clinical areas of interest: anticoagulation, diabetes

Favorite hobbies: hiking

Exploring Washington: Anywhere in the woods in the Mt. Rainier area

Why I stay with Providence: The mission, values, and vision align with my personal beliefs and all caregivers are focused on taking care of our patients as our first priority.

Dustin Clark
Hannah Haby, PharmD, BCACP
Clinical Pharmacist

Alumni Class of 2019

Hometown: Woodinville, WA

College of Pharmacy: University of Washington

PGY1: Virginia Mason Medical Center (Seattle, WA)

PGY2: Providence St. Peter Family Medicine (Olympia, WA)

Learning experiences precepted: Service Development

Clinical areas of interest: Population health, geriatrics, diabetes

Favorite hobbies: crocheting, staying active

Exploring Washington: There is too much to share! You can get a taste of Washington driving through the Cascade Loop Scenic Byway, a gorgeous 440 mile drive through some of the best spots in Washington. My favorite stop may be the Bavarian village, Leavenworth.

Why I stay with Providence: We provide team-based, patient-centered care, allowing pharmacists to practice at the top of our license.

Dustin Clark
Andrea (Christie) Hall, PharmD
Sr. Manager of Ambulatory Care Pharmacy

Hometown: Houston, Texas

College of Pharmacy: University of Texas

PGY1/2: Pharmacotherapy Medical University of South Carolina (Charleston, SC)

Learning experiences precepted: Leadership and Service Enhancement

Clinical areas of interest: cardiology

Favorite hobbies: hiking, home renovation, and toddler time

Exploring Washington: Olympic Peninsula

Why I stay with Providence: I stay with Providence because they have a tangible and true commitment to serving our community, including the poor and vulnerable.


Shelly Kribs, C-TAGME
GME Program Coordinator

Hometown: I grew up in the Bay Area and spent my secondary education in Sacramento, CA. I also lived in Denver, CO for 11 years; Portland, OR for 3 years; and now Tumwater, WA. I consider all of these places my hometowns as I have family, friends, and memories in each location.

Training: No formal training, but many years working in the hospitality industry and then healthcare. I love helping people!

Favorite hobbies: Jewelry making, painting, walking, spending time with my husband and daughter, DIY house upgrades/fixes, and enjoying nature.

Exploring Washington: There are so many places to explore! I enjoy being able to find so many different types of activities in nearby. You can go for hikes, visit the beach, kayak on the bay, and travel to a major metropolitan city all within close proximity.

Why I stay with Providence: My values align with the mission to help the poor and vulnerable. I also really enjoy the people I work with. Everyone is easy and fun to collaborate with.

Dustin Clark
T. Levi Lancaster, PharmD, BCPS, BCACP
Medical Director, St. Peter Family Medicine

Alumni Class of 2016

Hometown: Trenton, Tennessee

College of Pharmacy: University of Tennessee Health Science Center

PGY1: Providence St. Peter Hospital (Olympia, WA)

PGY2: Providence St. Peter Family Medicine (Olympia, WA)

Learning experiences precepted: Family Medicine, Teaching, Precepting

Clinical areas of interest: diabetes, hyperlipidemia

Favorite hobbies: endless games of fetch and playing with my dog (miniature dachshund), spending time out on the water paddle boarding, and looking up at the night sky to remind myself how small we are in the grand scheme of the universe

Exploring Washington: I love how centrally located Olympia is – it’s less than two hours away from really fun places like Seattle, Portland, Pacific Ocean, and Mount Rainier.

Why I stay with Providence: I strongly believe in the core values of the organization, and I can see these core values put into practice with many of the caregivers I’ve worked with at Providence. I’ve also had the pleasure to create wonderful working relationships with my patients, and the ability to witness their ongoing success is very rewarding.