Meet the Team

Meet the Team

Our team is here to help you. Our goal is to meet your needs as it pertains to the health and well-being of their pet. Our clients' pets are members of their family, and expect the same quality healthcare as they would for any other member of their family. When your pet comes to St. Michaels Companion Animal Hospital they become a part of our family too.


Katelyn  Dunham<br>DVM photo

Katelyn Dunham

Dr. Katelyn Dunham was born and raised in Denver, CO. After high school, she moved to Washington where she received a B.S. degree at Pacific Lutheran University. She moved back to Colorado and continued her education at Colorado State University. She graduated with a Master of Science in Biomedical Sciences degree and a Doctor of Veterinary Medicine degree. Dr. Dunham is passionate about enhancing client education and patient care by providing top quality medicine. Her specific interests include soft tissue surgery, ophthalmology, neurology, and orthopedics. Dr. Dunham is married and her husband, Jacob, is a local dentist here in Greeley, CO. Together they enjoy skiing, camping, traveling, and spending time with their yellow lab, Ellie.

Morganne Patterson </BR>  DVM  photo

Morganne Patterson

Morganne grew up in Northern Colorado in the small town of Nunn. She obtained both a Bachelors in Biology and a Masters in Biomedical Sciences from Colorado State University before entering their Veterinary Medicine Program. The first several years of her career were spent in Windsor, Colorado. Her special interests include surgery and diagnostic imaging.

Morganne and her husband are blessed with a beautiful daughter named Payton, son Hunter and two furry kids, Pappy (an oversized Papillion) and Blaise (a dilute calico cat). In her free time, Morganne enjoys spending time with her family and pets, visiting the mountains, or doing projects around her house.

Whitnee Patten<br/> DVM photo

Whitnee Patten

Dr Patten was born and raised in Honolulu, Hawaii. After graduating from Punahou School, she left the islands and received her B.S in Animal Science from Colorado State University in 1995. She stayed at Colorado State University and received her D.V.M there in 1999. After practicing in Las Vegas for 3 years, she and her husband, Jason happily moved back to his native Greeley area. Her interests include pain management, internal medicine, dentistry, ultrasound and soft tissue surgery. She and her partner, Dr Susan Patton, opened St Michaels Companion Animal Hospital in September 2007, and she has dedicated herself to the practice since. In her free time, she enjoys spending time with her son, Jaxon, and daughter, Lily, spending time at the lake, fishing and camping. The family shares their home with a beautiful black and tan King Charles Cavalier Spaniel named Megg Nogg.

Our Staff

Brandy Greenhagen<br>Practice Manager photo

Brandy Greenhagen
Practice Manager

Brandy has been with the clinic since it opened in 2007. She lives here in Greeley with her husband and 2 very busy sons. She was born in Colorado, grew up in New Mexico and moved back to Colorado in 1996. She has always worked with animals and has been working in animal health since 1992. She breeds and shows Australian Shepherds in conformation, agility and obedience. She is a huge Denver Bronco and Nebraska Cornhusker fan. When she has time, she loves to bake, ski, camp, fish and travel.

Alex Grimes photo

Alex Grimes

Alex is a veterinary assistant for St. Michael’s Companion Animal Hospital. She was born and raised in Windsor, CO where she still lives with her Siberian cat Kisa and her eleven geckos (2 Leopard geckos, 2 Gargoyle geckos, and 7 Crested geckos). Alex was introduced to her passion of veterinary medicine her freshman year of high school when she joined the high school’s FFA program. In the program, she took veterinary classes through the FFA agriculture program that partnered with Texas A&M to help prepare her for an assistant career in veterinary medicine, in which she had the opportunity to intern at local vet clinics. While in FFA, Alex was also able to accept the national title of FFA Veterinary Medicine Supervised Agricultural Experience and placed in the State FFA Star in Ag Placement: Veterinary Science. Although she is no longer in Windsor’s FFA chapter as an active member Alex still helps to teach and prepare veterinary science students for competitions every year. She is now a student at Colorado State University in which she is studying Agriculture Education and Animal Sciences in hopes to becoming an agriculture education teacher to continue helping students develop skills and find possible careers in agriculture. Her fun hobbies include volunteering at the Colorado Renaissance Festival, doing ballet, yoga, and watching movies. Alex cannot wait to meet and interact with all the awesome clients and pets at St. Michael’s Companion Animal Hospital!

Nikki Roos   photo

Nikki Roos

Nikki was born and raised in Lafayette, California where she lived with a cat, two dogs, and a horse. She moved to Colorado to attend Colorado State University and at the time she did not know what she would like to major in. After taking a physiology class and an anatomy class, she fell in love with veterinary medicine and declared a major in Equine Science. She graduated from CSU with a bachelor’s degree in 2020. Nikki plans to attend Veterinary school in the fall of 2021. In her free time, Nikki enjoys riding her horse, skiing, and traveling. 

Joshua Goldsworth, CVT   photo

Joshua Goldsworth, CVT

Josh graduated from Front Range Community College Veterinary Technician program in May 2014. He went into animal health care because while he was working at the Longmont Humane Society he realized it was the only job he'd held where he could say, "I . . . love . . . this . . . job." It only took him until he was 30 to figure what he wanted to be when he grew up.
He lives with his brother and a tuxedo kitty named Trips who thinks she's queen of earth. When he's not thoroughly enjoying his job at St Michael's Companion Animal Hospital he enjoys reading, video games and television all while lounging on his couch because he fully admits he's kind of a lazy dude.

Alexys Lawson   photo

Alexys Lawson

Lexy was born in St. Augustine, Florida, where she's lived most of her life. She moved to Fort Collins, CO in 2020 to attend Colorado State University, where she is currently working towards her bachelor's degree in Zoology. Lexy has been interested in veterinary medicine since she was a small child and hopes to go on to attend veterinary school in a few years. In her free time she enjoys hiking, reading and spending time with her fiance, Gerry, her German Shepherd, Tesni and her not-so-little black cat, Creature.

St. Michaels Companion Animal Hospital

2914 67th Avenue, Suite #102

Greeley, CO, 80634

For general information, questions, appointment requests, call us at:

Clinic: (970) 330-9400 Fax: (970) 330-9401 Email:


Sunday Closed

Monday 8:00am - 5:00pm

Tuesday 8:00am - 5:00pm

Wednesday 8:00am - 12:00pm

Thursday 8:00am - 5:00pm

Friday 8:00am - 5:00pm

Saturday 8:00am - 12:00pm