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Doctors & Staff

Meet our friendly and knowledgeable doctors and staff who make Deer Park Vision Source the leading provider of vision care in Deer Park.

Michael De Rosier O.D.

Dr. DeRosier is an active member of VOSH. VOSH stands for Volunteer Optometric Services to Humanity. This is an international organization that is striving to eliminate avoidable blindness in our world today. VOSH/International signed a declaration with the World Council of Optometry and the World Health Organization in 2001 to achieve this by 2020. Each year, VOSH chapters average between 80 and 90 missions serving in excess of 100,000 people.

Dr. DeRosier began serving with VOSH in 1986. He previously sat on the VOSH NW Board and was president of the chapter. Today he sits on the International Board and chairs the Technology Transfer Program (TTP). TTP accepts optometric equipment donations. They take this equipment, ensure that it works well, refurbish it, and then send it to clinics and schools in developing countries. Their goal is to educate future optometrists in developing countries and to give them the tools necessary to establish a good practice. This program was founded in 2006.

As a member of VOSH, Dr. DeRosier has had the opportunity to travel on several eye missions over the years. He has been to Honduras, Nicaragua, Guatemala, and Samoa. For each mission, a team of 16-22 people travel to a developing country and do eye exams. If a patient needs glasses, the doctors give them donated glasses that are similar to their prescription. Our practice is always accepting gently used prescription glasses for these missions.

Jeremy Marcuson O.D.

Jeremy is a native of the Spokane area. He attended Washington State University, graduating with a degree in Biochemistry. He earned his Doctorate of Optometry in 2004 at Pacific University College of Optometry. Following graduation, Dr. Marcuson completed a year-long residency program at the Spokane VA Medical Center. He joined Dr. DeRosier in July of 2005

Each year, the Optometric Physicians of Washington selects a Doctor of Optometry of the Year and a Young Doctor of Optometry of the Year.  Dr. Marcuson was awarded the Young Doctor of Optometry of the Year award for the year 2007-2008. He currently serves as the co-chair of the  Optometric Physicians of Washington education committee.  Today, Dr. Marcuson is active and past president of Deer Park Rotary. In his free time, he likes to go fishing in Alaska. He and his family live in the Deer Park area.

Nate Biancardi O.D.

Nate was raised just north of Deer Park in Chewelah. He attended Washington State University and graduated in 2015 with a degree in Biology. He then moved to Arizona and completed his Doctor of Optometry degree at Arizona College of Optometry. While at AZCOPT Nate completed training in practices around the Phoenix area and Chicago that was centered around ocular disease.

Nate is a member of the Optometric Physicians of Washington and the American Optometric Association. While in Optometry school Nate was a member of the honors fraternity, Beta Sigma Kappa. In his free time, Nate likes to hike, play basketball, watch sports, and travel. Nate and his wife Sami currently live in the Spokane area.

Front desk


Shauna was born and raised in the Spokane area. She graduated in 2014 and worked as a homecare aid for a few years where she developed a love for the medical field, in 2018 she started work as a medical receptionist and has stuck with it since. She loves being able to get to know the patients and strives to help in any way she can so patients enjoy their visit from the time they walk in the door to the time they leave.
When she is not working she enjoys getting outdoors to hike with her husband Caleb, serving at her church, reading, traveling, and cuddling with her dog.


Isabella Hansen is a 2020 Mt. Spokane graduate, where she excelled on the MSHS debate team in state and national championships.
She has lived in Deer Park her whole life and enjoys volunteering in her community, especially vacation Bible school in the summer and working with kids.

Some of her favorite things to do are, reading, fishing, camping and attending as many outdoor musical festivals with her family as possible.

Isabella enjoys working in customer service and getting to interact with the people in her community.



Malia is a graduate from Deer Park High school. She has been a part of the Deer Park community for most of her life. She is our Head Optician and always eager to expand her knowledge.
In her free time, she likes partaking in overseas mission trips, as well as other activities with her church, and traveling with her husband.


Sam had lived in Deer Park her entire life and loves living and working in the community. She graduated from Deer Park High School in 2004. She has a passion for learning new things and enjoys the teamwork atmosphere Deer Park Vision Source provides.
In her free time, Sam likes to spend her time camping, crafting, taking pictures with one of her many cameras, and being with her family. Anything outdoors! Her family has lived in Deer Park and the surrounding area since 1961.



Ida Trower is a long-time resident of Elk, Washington. She started her career as a Para Educator for the local School District and was there for 17 years before returning to school herself. She joined Deer Park Vision Source a little over a year ago.
Working at Deer Park Vision Source has been an rewarding and fulfilling career change for her. She enjoys the variety of responsibilities, the staff and meeting patients.

When Ida is not working, she enjoys taking cruises to warm destinations, working outside, and spending time with her Kids & Grandkids.


Debbi Davis has lived in the Pacific Northwest her entire life and enjoys the area so much. She has a variety of experience from jobs and volunteer work. She had the opportunity to make a career change and joined Deer Park Vision Source in 2018.

Working at Deer Park Vision Source has been a very fulfilling career change for her. She enjoys the variety of responsibilities, challenges and meeting patients.

When Debbi is not working, she enjoys music/concerts, 4-wheeling, kayaking and relaxing at the lake.



Katryna has lived in the Spokane area her whole life. She graduated in 2018, and soon after went back to school to get her EMT License. She served as a volunteer EMT for 9 months and then moved on to working Full Time with us as our Testing Technician. Since being hired, she has been cross trained in the optical department, front desk, and marketing. She loves learning new things every day and getting to serve the community.
When Katryna is not at work, she loves serving at her church with her husband Christian, traveling, working on home projects, and playing the drums.



Joanna is a born and raised resident of Deer Park. She graduated from Deer Park Home Link in 2015 and the community has always been an important part of her life. She has a passion for learning new things and making people the priority, which has made being a technician at Vision Source a wonderful next step in her career.

In her free time, Joanna likes to spend her time camping, traveling, and playing her guitar. Anything outdoors!


Risa is a long-time resident of Elk, Washington. She began her career in retail management and worked for 18 years in the field of finance. She had the opportunity to make a career change and joined Deer Park Vision Source three and a half years ago. She trained directly under Dr. Marcuson and is now a well- qualified optometric technician. Working at Deer Park Vision Source has been a very rewarding career change for her. She has the opportunity to work with a great group of people and two terrific doctors who really care about their patients and their employees.

When Risa is not working, she’s playing outside! She loves snowmobiling, boating, fishing, and ATVing.


Sarah is an Eastern Washington University Graduate, and Alpha Omicron Pi Alumni. She aspires to attend the University of Houston College of Optometry and specialize in Pediatrics.

She is excited to expand her knowledge in the optometry field, while serving the Deer Park community.

When Sarah is not working, she competes in billiard tournaments across the country. Sarah and her daughter, Aurora, reside in North Spokane.