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Doctors & Staff

Meet the experienced and friendly doctors and staff who make Gaylord Eye Care Center the leading provider of vision care products and services in Gaylord.


Ronald Mead, O.D.

Undergraduate: Central Michigan University, Ferris State University

Doctor of Optometry: Ferris State College of Optometry

Married to Lori, childen: Jason, Kristin, Cameron and Trevor.

Dr. Mead’s professional associations include the Michigan Optometric Association and the American Optometric Association. He serves as a Vision Source Adminstrator for Northern Michigan and the Upper Peninsula. Hobbies include: Golf, computer.


Peter Oppermann, O.D.

Grayling High School graduate with honors.

Bachelors of Vision Science: 1995 Ferris State University with honors.

Doctorate 1998 Michigan College of Optometry with honors.

Dr. Oppermann specializes in the eye health examination of patients of all ages, including the management of complicated eye disease as well as recommendation of all forms of eye wear.

He married and the father of two children, enjoys downhill skiing, hunting, boating, fishing and various other outdoor activities.

Dr. Oppermann is an active member of the Rotary Club of Gaylord, the Michigan Optometric Association and the American Optometric Association. He also serves as an Administrator for Vision Source of Northern Michigan and the Upper Peninsula.


Nathan R. Slezak, O.D.

Bachelor of Science , 2006 Central Michigan University.

Doctorate of Optometry 2010 with Highest Distinction, Michigan College of Optometry

Dr. Slezak specializes in eye health examinations for patients of all ages including pediatrics, macular degeneration, glaucoma, and corneal disease. He currently fits most of our specialty contact lenses.

Dr. Slezak enjoys coaching athletics, hunting, fishing, and spending time with his wife and 3 kids.


Johanna Mauk, O.D.

Undergraduate: Northwestern Michigan College, Bachelor of Science: Ferris State University.

Doctorate of Optometry: Michigan College of Optomety

Dr. Mauk has experience in primary eye care, as well as ocular disease and contact lenses.  She also has pediatric and low vision experience.

Married to Jeff, Dr. Mauk enjoys spending time with family and her Boston Terriers, Iris and Max, trying new recipes and riding both her road and mountain bike.


Lindsey Wynkoop, O.D.

Lindsey Wynkoop, O.D. received her bachelor’s degree in Vision Science from Ferris State University and her doctorate at the Michigan College of Optometry.

She moved to the Fiji Islands in 2012 to pursue a position in educating and training general doctors and nurses from all over the Pacific Island at the Pacific Eye Institute.

Dr. Wynkoop provides comprehensive eye care services including: primary ocular health assessment, glaucoma management, ocular surface disease, pre/post-operative surgical care, and specialty contact lens fitting.

Dr. Wynkoop returned to Michigan in 2017 to join our practice


Robert Slezak, O.D.

Bachelor of Science in Education, 1975 Central Michigan University.

Graduate work in Biology 1976-1980.

Doctorate 1985 (FSU) Michigan College of Optometry – Valedictorian of his graduating class.

Dr. Slezak specializes in eye health examinations for patients of all ages, including complicated eye diseases. He also recommends all forms of eye wear.

He is married to Mary, has two sons, Ryan and Nathan and a growing number of grandchildren. He is an avid fly fisherman and golfer. He taught high school for 6 years before becoming an optometrist.

Dr. Slezak is a member of the Kiwanis Club of Gaylord. His professional associations include the Michigan Optometric Association and the American Optometric Association. He serves as an Administrator for Vision Source of Northern Michigan and the Upper Peninsula.


Kami Knopp, CPOA

Office Manager for Gaylord Eye Care Center

Kami began working for Bellaire Eye Center / Gaylord Eye Care Center / Eyes on Main in 1991. She is a Certified Paraoptometric Assistant and the Office Manager for Gaylord Eye Care Center.

Kami is a “Jill” of all trades, assisting where needed.

Kami has extensive training on all levels of preliminary testing, including slit lamp evaluation of contact lenses, topography, optical coherence tomography (OCT), visual evoked potential (VEP) and retinal photography. She also does intra-ocular pressures, corneal measurements, visual fields and visual acuities.

She is married with three children. She enjoys reading and bowling.


Tammy Warren, CPO

Tammy began working for Gaylord Eye Care Center in 1999. Her duties include the our phone and call center, front desk and reception area, as well as technician. She greets patients as they arrive, assists in preparing records, answering the telephone and checking insurances. She also schedules appointments and handles referral scheduling. Tammy’s duties also include monthly statements and account receivables.

Tammy is married with two children and grandchildren. She enjoys spending time with family and friends, bowling, knitting and cross-stitch.  Tammy is also our resident baker.  She is responsible for most of our birthday treats.


Teresa Abbott, ABOC

Teresa has worked for Gaylord Eye Care Center since 1993.  She became a board certified optician in 2000.  Teresa works in helping our patients to select their personal eyewear and instructs new contact lens wears on how to insert and remove their contact lenses, as well as how to properly care for them.

Teresa’s other duties include dispensing glasses, adjusting and repairing eyewear.

When not working Teresa enjoys spending time with her husband Chris, large family and traveling.  She is Nana to many beautiful grandchildren!


Sandy Mammoser, ABOC

Sandy has worked at Gaylord Eye Care Center since 2007. She has been an American Board of Opticians Certified Optician since 1996. Her duties include assisting in frame selections, adjustments of eyewear, repairs and ordering of all frames, lenses and contacts. She also dispenses glasses, lenses and contact lenses. Prior to moving to Gaylord she worked as an Optician at an optometric office in the state of Virginia.

Sandy is married to Tom and together they have one daughter. She enjoys gardening and singing.


John Puroll

John has worked for Gaylord Eye Care Center since 1995 as our surfacing lab manager, but has many more years of experience in surfacing and edging lenses. Because of this, John has a vast knowledge of lenses and optics. He handles the process of surfacing the power of lenses, as well as edging and repairs. John has been known to take a “beyond repair” frame and make it wearable until the new frame and lenses are ready for a patient.

John is married with two daughters. He enjoys playing basketball, golfing and hunting.


Marj Webster, CPO

While Marj joined the Gaylord Eye Care Center staff in 2011, she comes to us with 40+ years of experience in ophthalmology/optometry. Marj is an optician and has a background in ophthalmic assisting. Her  responsibilities can range from assisting in the eyewear selection, contact lens training for the new wearer, as well as ordering and dispensing eyewear. Most days, however Marj is on the phone managing our ever hectic schedule.

After  25 year of residing in Florida, Marj relocated to northern Michigan and is active in remodeling, including woodworking. She enjoys being out-of-doors. We do try to keep her off the roof as much as possible!


Lisa Burns, CPO

Lisa joined our team from the office of Dr. Frank Rosenbaum where she was their primary biller.  She has a varied optical background that includes working in the optical, front desk, billing and pretesting.  Currently she is transitioning into a role as co-biller.

Lisa is married with four children.  She sees a lot of wild life on her daily commute to work and loves her cup of coffee!


Cassie Taylor, ABOC

Cassie joined our team from the office of Dr. Peter Fedor.  She is working as an optician, but also has the training to do special testing. Cassie completed training at Ferris State University for Opticians. Cassie has an amazing passion for learning and always willing to do more!  Her smile and cheerful attitude make working with her a bonus.

Cassie is a graduate of GHS and the University of Phoenix.  She and her husband have two children, Thomas and Madelyn.


Mariah McLeod, CPO

Mariah joined the Gaylord Eye Care Center team with an extensive background in the ophthalmology. She also has worked as a nursing assistant. She is also an EMT.  We are pleased to have her with us.  She specializes in patient care prior to seeing the doctor and has training in special testing.

Mariah is a hometown girl.  Born and raised in Gaylord.  In her relaxation time Mariah loves to camp, enjoys fishing and helping out with community, especially Wings over Northern Michigan Airshow every year.

She and her husband have one little kiddo and a big dog!


Photo of EmileeEmilee Nye

Emilee joined Gaylord Eye Care in August of 2018 and is currently working as an Optometric Technician in hopes of becoming certified. She specializes in patient care prior to seeing the doctor. Emilee is also a Certified Nurses Assistant. Born and raised in Gaylord, Michigan, Emilee graduated from Gaylord High school in 2015 and is currently enrolled in North Central Michigan College where she will graduate with her Medical Assistant Certificate in the fall of 2019. Emilee is engaged to her high school sweetheart, and they enjoy kayaking, ice fishing, camping, and spending time with their two dogs, Hemi and Ruger.


Photo of ShastaShasta Kraus

Shasta (Buzzell) Kraus was raised in small-town Gladwin, MI. After high school, she worked at The Medicine Shoppe as a technician and then as a podiatric medical assistant for Dr. Jeffrey Stone D.P.M until 2015. Shasta and her husband Mark (caveman) moved north with their 4 beautiful daughters where she has assisted with coaching basketball and being her kids number 1 fan. As a family, they enjoy boating, fishing, and off road adventures. Shasta and Mark, when not busy running the girls everywhere, enjoy riding their motorcycle with their Scooter Trash family, target practice on the range, and any spur of the moment adventures.

Shasta started working at both Gaylord Eye Care Center and Bellaire Eye Center in 2018.


Photo of LisaLisa Wurster

Lisa started with Gaylord Eye Care Center in 2018. One of the brightest parts of her life for last 40 years has been to help people see their best! She has worked in all areas of the Optical Industry next to many wonderful people. She moved to the Gaylord area in 2017 to be away from the big city life. Lisa grew up on a farm outside of Findlay, OH. She has 3 loving daughters that have blessed her with 6 wonderful, fun, and active grandchildren. She love snow and outdoor activities, painting, crocheting, sewing, and working with wood. She loves being creative and trying new activities.

She is an Ohio Licensed Dispensing Optician and is working very hard to get her ABO certification reinstated.


Hanna Carl

Hanna started at Gaylord Eye Care Center in October 2019. She has been working in the optical field since she was 17 years old. She has worked in many parts of the office but has found her home as an optician. Hanna completed Medical Assisting School and she is currently working on obtaining her license as a certified optician. She is a native to San Diego, California, but has also lived in North Dakota before moving here to Northern Michigan with her two children, Tanner and Delaney. Hanna loves cooking, baking, camping, swimming, spending time with her two kids and anything outdoors.


Katy Slagel

Katy started at Gaylord Eye Care in August 2019 as an optometric technician. She thoroughly enjoys learning everything she can about optometry and eventually would like to become a certified paraoptometric assistant. She graduated from Gaylord High School with honors in 2014 and currently lives in Vanderbilt, MI. Katy loves to read, spend time with her family, her fiance, and their two dogs in her spare time.


Alicia Howell

Alicia joined Gaylord Eye Care Center in the spring of 2019, and is currently working as an optometric technician and loves it. In the months to come she hopes to become CPO certified. Alicia works not only our Gaylord location but at our Bellaire location as well. Alicia grew up in Gaylord, MI, and graduated from Gaylord High School in 2013. After high school, she moved to East Lansing where she graduated from Douglas J Aveda Institute in 2014 with her cosmetology license. Currently, Alicia lives in Bellaire MI. Her two little brothers and dog, Harper, keep her busy. In her spare time, she enjoys camping, painting, traveling, music, reading, and spending time with her family and friends.


Katlyn Pung

Katlyn started with Gaylord Eye Care in the summer of 2019. She moved from Weidman, MI, where she graduated from Beal City High School in 2018. After graduation, she began working as an optometric tech at a local eye care center. She transferred her experience to GECC after moving to Johannesburg with her boyfriend. Katlen is a certified nurses assistant. She also works part time at a retirement facility, and loves spending time with her residents. She is currently studying nursing, with hopes to becoming a nurse practitioner. In her spare time, she enjoys taking trips to see her family, her cats and dogs back home. She loves shopping.


Theresa Haske

Theresa began her career with Gaylord Eye Care Center in 2013 where she multi-tasked many positions at our front desk while sporting the title of “Director of first impression”. Theresa left our office for a short period to do some traveling, sightseeing and quality bonding time with her two out of state grandchildren.

She recently returned to Gaylord Eye Care Center under a new title as Manager. She is very excited to be part of an amazing team. while working beside each employee. Theresa cheers them on encouraging them to excel to the best of their ability.

Theresa was born and raised in Mt. Pleasant MI. After graduating from High School, Theresa married her husband of 34 years, Steve. Due to her husband being in the military they traveled to many different places before settling in Gaylord, MI where they raised their two children Sara Lyn and Zachariah. She enjoys spending time with two Grandbabies, reading and gardening.


Katie Kirk

Katie joined Gaylord Eye Care in the Fall of 2019, where she works as a receptionist. Katie was born and raised in Gaylord MI. She graduated from Gaylord High School in 2012. Katie loves working with people, and she always knew that helping people was her calling. She hopes to further her education and become a Certified Paraoptometric Technician. Katie currently lives in Gaylord with her four-year-old daughter Anahlynn. She enjoys spending time with friends and family, going to the beach, riding dirt bikes, and anything that’s outdoors.