Meet Our Staff

Meet Our Team of Veterinarians in Aurora, CO & the Veterinary Staff of Mile High Animal Hospital of Aurora

Dr. Ilan Waskow and the veterinarians and staff at Mile High Animal Hospital of Aurora offer Aurora, Parker, Centennial and the greater metro Denver, Colorado metro area the most up-to-date veterinary care available. Our tight-knit team of veterinarians and veterinary care staff have been hand-picked for their expertise, love of animals, and commitment to personalized attention and care for our wonderful clients and their beloved pets. We encourage you to read the biographies of Dr. Waskow and the entire Mile High Animal Hospital veterinary team who stand ready to care for your pets.

Aurora, CO Veterinarians

Ilan Waskow, DVM

Dr. Ilan Waskow was graduated with Honors from Goucher College in Baltimore with degrees in English and Biochemistry in 1991. In 1995, he was awarded his DVM by Oregon State University and began his veterinary career practicing on the East coast. After a visit to the state in 1998, Dr. Waskow fell in love with Colorado. He and his wife Meg founded Mile High Animal Hospital of Aurora in 2002, and the practice has been serving Aurora, the Saddle Rock neighborhood, and surrounding communities ever since. They have 2 children, Aaron and Emily, and share their home with 2 dogs, Kaylee and Castle, and Martha, an affectionate cat. Dr. Waskow has a special interest in behavior, dentistry, radiology, and client education.

Dr. Leslie Dunham | Mile High Animal Hospital of Aurora

Leslie Dunham, DVM

Dr. Dunham is originally from Seoul, Korea, but grew up in Eugene, Oregon. She received her bachelor’s degree in biology and pre-med from Seattle University. After noticing that she was volunteering at the zoo and taking extra courses in animal physiology and behavior throughout undergraduate school, she realized that her true passion was in veterinary medicine. She received her DVM from Oregon State University in 2013 and worked in small animal medicine for 2 years in Portland, Oregon. In October of 2015, she followed her heart’s desire for bigger and better mountains and moved to Colorado. She is an avid rock climber and hiker and also enjoys biking, running, scrapbooking, and traveling. Her special interests are in feline medicine and behavior, pain management, and surgery. She currently shares her home with Penny, a friendly and vocal cat who she found abandoned in Portland, and rescued.

Sarah Timmerman, DVM, CCRT

Dr. Timmerman was born in St. Louis, Missouri but raised here in Highlands Ranch, Colorado. She returned to her Missouri roots and received a bachelors degree in animal science from the University of Missouri-Columbia followed by her DVM from the same institution in 2014. Drawn back to the mountains and dry air of Colorado, she practiced small animal medicine for 2 years in Northglenn, Colorado following her graduation. In the spring she completed the process to be certified as a canine rehabilitation therapist, a discipline she had found a passion for during veterinary school. She has two cattle dog mixes at home, Dynia and Zucca, that keep her on her toes and whom she loves to take out hiking/walking to explore all that Colorado has to offer.

Tanner Johnson, DVM

Dr. Johnson was born in South Carolina, but raised in the sunshine state.  He went to the University of Florida for both his undergraduate degree and doctorate, which was finished in May 2016.  Go Gators!  Between the beautiful scenery, kind people, and call of adventure, he was drawn to Colorado and moved shortly after graduation.

Dr. Johnson has special interests in small animal soft tissue surgery, dermatology, behavior, and dentistry.  He even received a honorary certificate in dentistry.

Dr. Johnson loves reading, skiing, biking, and good company.  He’s even learning violin (but it’s a slow work in progress).  He lives in Aurora with his two pups Terra, a chocolate labrador, and Dante, a labrador mix.

Hospital Administrator

Veterinary Hospital Administrator | Mile High Animal Hospital of Aurora

Jamie Davis, CVPM

Jamie has been working in veterinary medicine since high school and has extensive experience in the veterinary hospital operations. After completing her bachelor’s degree in Animal Science, Jamie was working towards becoming a veterinarian when she fell in love with veterinary hospital management. Since 2013, Jamie has been working as our veterinary hospital manager. In 2008, she earned the distinction of Certified Veterinary Practice Manager (CVPM) through the Veterinary Hospital Managers Association. Jamie shares her home with her husband George and three daughters, Josey, Georgia, and Gianna. Her animal kids consist of two felines (Uno and Jackson) and two boxers (Abby and Abel). In her spare time, Jamie enjoys time with her family and working out.

Veterinary Nurses

Certified Veterinary Technicians | Mile High Animal Hospital of Aurora

Dawn Denison, CVT

Dawn attended Bel-Rea Institute and received her AAS in Veterinary Technology in 2003. She has been a Certified Veterinary Technician with the state of Colorado since 2003. During the course of her career, Dawn has worked in emergency veterinary medicine, exotic animal care, and small animal orthopedic surgery. Dawn enjoys working in the surgical ward, as well as the daily tasks of treatment. Dawn hales from Maryland, is married, and has two daughters. She and her family have several dogs, three horses, and a passion for exotic birds and reptiles. Dawn and her family enjoy horseback riding and hiking with their dogs.

Chelsea Tincoff, CVT

Chelsea is a Colorado native. She grew up in a household with 3 dogs, 3 cats, 3 ferrets, a mouse, 2 guinea pigs and 2 lizards. Naturally she decided at a young age to work with animals.  In December 2012 she was graduated from Bel-Rea Institute with a degree in Veterinary Technology. Chelsea has 2 fur babies: Tiger a 16 year old tabby and Kato a 1.5 year lab mix.  In Chelsea’s spare time she enjoys everything Colorado has to offer, from camping and skiing to fishing, dog parks and just being outdoors.

Certified Veterinary Technicians | Mile High Animal Hospital of Aurora

Mark Borchers, CVT

Mark is a Montana native who, in a previous life, earned a Computer Science degree from Montana State and worked in the technology field.  Twenty-five years later, he decided he liked animals so much he became a Vet Tech.  He earned a degree from Bel-Rea Institute of Animal Technology in 2012, and is thrilled to be spending his days with pet parents and helping pets become healthy and happy.  Mark is Fear Free certified and looks forward to making sure that every visit is stress and fear free.  He shares his castle with his cat, Queen Penelope (Penny to her loyal subjects).

Certified Veterinary Technicians | Mile High Animal Hospital of Aurora

Katy Gould, CVT

Katy grew up in a small town in northern Michigan and has always had a passion for animals. After high school, Katy attended a local community college in Michigan before moving to Colorado to study at Bel-Rea Institute of Animal Technology. Katy was graduated from Bel-Rea in June 2015 and shortly after earned her certified veterinary technician credentials. Katy likes to spend her time with her fiance and their three dogs, Ralphie (a Chuhuahua), Zola (an Aussie mix) and Harlow (new german shepherd puppy). She also enjoys movies, reading, and anything outdoors in the summer.

Certified Veterinary Technicians | Mile High Animal Hospital of Aurora

Courtney Sisson, CVT

Courtney is a Colorado native, and she has always had a passion for animals of all shapes and sizes. She attended Moorpark College’s Exotic Animal Training and Management Program. Through this program, she interned at the Wildlife Waystation, where she literally worked with lions and tigers and bears. She then graduated from the Pima Medical Institute in Phoenix, Arizona before returning to Colorado in 2012. In her spare time, Courtney loves spending time outdoors, and with her Greyhound-mix Benjamin, Brussels Griffon mix Maverick; and her cat, Lucy.

Client Care Coordinators

Mike Rickert, Director of Client Care

Mike grew up in the small town of Ketchikan, Alaska and shortly after high school moved to Colorado, where he graduated from Westwood College with a degree in Information Technology in 2003. He has always had an affinity for animals and has been working in the veterinary field for the last 11 years. At home he currently has two dogs: a black lab named KC and an Australian shepherd named Frodo. Mike is an avid sports fan and roots for all local teams, but is a huge Broncos fan (both Denver and Boise State). In his spare time, he enjoys cooking, playing board games with friends and family, and catching up on the latest movies. His daughter Peyton is his pride and joy

Rachel Thatcher

Rachel moved to Colorado from Grass Lake Michigan after marrying her high school sweetheart who is a US Airman.  Rachel grew up on a horse farm with goats, sheep and chickens and was a member of 4-H and the president of her FFA (Future Farmers of America) club.  She also grew up showing horses in competitive circuits.  Rachel worked at the Humane Society of Huron Valley (a no-kill shelter) in Michigan before making the move out west.  She is currently pursuing a bachelor’s degree in geriatric nutrition and enjoys reading and napping in her spare time.  She shares her home with a 3 month old Husky named Kona and a mini pig named Garcia.

Ashley Bagaporo

Ashley grew up knowing all the while that animals are her true passion. She volunteered at horse rescues when she was in elementary school, joined her school’s snake club in middle school, and began to collect pets of all shapes and sizes in high school. Ashley currently has a horse, two dogs, three cats, five snakes, a monitor lizard, a gecko, and a chameleon. Ashley and her newly wedded husband Daniel plan on growing their critter household in the years to come. In her free time, Ashley loves to paint on canvases and on the walls of their home, bake goodies for humans and animals alike, and play videogames against her husband.

Christine Hartley

Christine is a native of Houston, Texas, where she lived most of her life until relocating to the beautiful state of Colorado in 2015. She always had a dream of working with animals, which fueled her desire to seek employment at an animal care facility right out of high school.  Christine began her career in veterinary medicine in 2004, working as a kennel attendant at a prestigious Veterinary Hospital in Houston. Although she loved working hands-on with the patients, she soon realized her true passion was helping pet parents on the administrative side of the business. She began work as a receptionist, and has since enjoyed over seven rewarding years helping both people and their pets! Christine spends most of her time with her eight year old son Hendrix. She also loves to read (non-fiction), write poetry, and as of late has developed an affinity for crafting her own jewelry out of things you can get at the hardware store. Her home is shared by her two spoiled-rotten miniature dachshunds: Nutter Butter (a male red smooth coat) and Indy (a male dapple).

Melissa McCallum

Picture and bio coming soon!

Veterinary Assistants

Jelisa Taylor

Picture and Bio coming soon!