Intermountain Embryonics was started by veterinarians Hoyt Rees and Rebecca Holmbeck in June of 2017. Both have worked as veterinarians in the Magic Valley for several years and are deeply rooted in the success of the area's animal agriculture industry. Now that IVF technology has become affordable and efficient, it is Intermountain Embryonic's goal to help beef and dairy producers capitalize on this technology. Through rapid genetic improvement that embryo use can provide, producers can increase production rates, improve animal health traits, and increase feed efficiency.

Genetically superior animals can produce more with less. This helps to make animal agriculture more sustainable and more profitable, while reducing stress on the environment and feeding more people. 

Hoyt Rees DVM

Hoyt is the field services director and an owner of Intermountain Embryonics. Prior to opening Intermountain Embryonics, he worked as a large animal practitioner in the Magic Valley in Idaho for 3 years. Hoyt’s passion for innovation and bovine theriogenology have been influential in the growth and success of the business.

Hoyt is from a farming community in Illinois and moved to Idaho with his wife, Rebecca, after they graduated from veterinary school in 2014.  He attended Lake Forest College where he earned a bachelor’s degree in biology and then went on to earn his Doctor of Veterinary Medicine at the University of Illinois. He is certified with the American Embryo Transfer Association.

Field Director


Velia Nelsen

Velia Nelsen was born in Santa Maria, CA and moved to Jerome, ID in 2003. She attended Jerome High School and graduated in 2008. Velia has always had a passion for animals, so she pursued a career in the veterinary field after graduation and has worked as a veterinary technician for 7 years before joining Intermountain Embryonics as an Embryologist. 

In 2013, she married her high school sweetheart, Matt Nelsen, and they live in Murtaugh.  Velia completed her bovine embryo in-vitro production training in 2017.  She is an integral part of the lab at Intermountain Embryonics.  She also helps with cow-side procedures in the field.

 Velia and her husband welcomed a new baby girl, Emilia in 2019. They have two lovable dogs, Dodger and Dewey. She enjoys anything outdoors or fitness related activities. 



Rebecc Holmbeck, DVM

Rebecca is the laboratory director and an owner of Intermountain Embryonics.  She oversees the in-vitro production of embryos and is the main client account manager. Her attention to detail and dedication ensures the lab delivers great results. She will also be heading up the development of the small ruminant branch of the business in 2021.

Rebecca grew up in a rural community in Illinois.  She served 4 years in the US Army before returning to Illinois to earn her bachelor’s in Animal Science. She completed her Doctor of Veterinary Medicine degree at the University of Illinois in 2014.  Rebecca earned her veterinary acupuncture certification in 2013 and certification in Veterinary Spinal Manipulation Therapy in 2016. She uses these complementary therapies to enhance the health and fertility of some of our donor animals as well as treating dogs and horses.

Lab Director


Eric Evans recently joined the Intermountain Embryonics team as our Genetic Consultant and Program Coordinator. Eric will primarily be responsible for designing custom IVF programs on our client’s farms based on specific needs on their operation. He has successfully utilized embryos and IVF on his dairy for many years and brings a plethora of knowledge and experience to our team.

Eric grew up in upstate New York, where he started his career in the dairy industry on his family dairy, Evans Family Farm. Since then, Eric has gained experience with managing an A.I. business, running a mobile hoof trimming truck, dairy herd management, and owning a mineral business in Idaho.

Eric, his wife Misty, and their children currently reside on the family dairy in Buhl, Idaho, Evans Dairy. Their herd is a nationally known registered Holstein and Jersey cow dairy that successfully utilizes IVF to genetically advance their herd. Eric is a self-proclaimed genetic junkie, so he breeds and shows registered Rottweilers and dairy cows as a hobby with his kids. Eric and Misty also have their own cheese-making business in the Magic Valley.  

Genetic Consultant 



476 Cheney Dr W

Twin Falls, ID 83301