Brad Senstra is the Chief Executive Officer at ReproTech. He works collaboratively with ReproTech’s talented team to ensure the Company consistently delivers first-class service, safety, and reliability in long-term cryostorage. Prior to joining ReproTech, Mr. Senstra served as Executive Director of Seattle Reproductive Medicine (“SRM”). During his tenure, Mr. Senstra oversaw all clinic functions and guided SRM to become one of the largest fertility programs on the west coast. He also contributed significantly to the creation of My Egg Bank, one of the largest national donor egg banks and elevated patient retention and customer service. Mr. Senstra is a noted thought leader in reproductive medicine and has presented at numerous American Society for Reproductive Medicine meetings and events over the past 16 years. He also served on the Association of Reproductive Managers Board from 2014-2017. Mr. Senstra earned a Masters of Health Administration from the University of Washington and a B.S. in Industrial Engineering from North Dakota State University.

W. Brent Hazelrigg, MS President Emeritus

Brent is a partner in ReproTech and serves as President Emeritus. Brent has more than 30 years of human sperm and embryo cryopreservation experience and two degrees from the University of Missouri, including a Master of Science in Reproductive Biology. Brent completed his graduate research with an innovative study of freezing and thawing techniques for embryos.

Before joining ReproTech in 2004, Brent served as the Division Chief Operating Officer and on the Genetics & IVF Institute Board of Directors, a fully integrated, comprehensive fertility and genetics services company. Brent is an active member of the American Society for Reproductive Medicine, the American Association of Bioanalysts, the International Society for Biological and Environmental Repositories, and the American Association of Tissue Banks (AATB). Brent has served as the Chairperson of both the Living Donor Council and Reproductive Council, as well as serving two terms on the AATB Board of Governors. Additionally, he has served on the following AATB committees; Accreditation, Standards, Ethics/Bylaws, Membership, and Programs. Brent is also a partner in Frank/Hazelrigg Cattle Company LLC, a family-owned and operated beef genetics business in Missouri. In his spare time, he is a coach with the Columbia Wrestling Club, a youth wrestling club in central Missouri. He also serves on the boards of the Missouri Wrestling Foundation and Lizzy's Walk of Faith Foundation.

Dr. Hwang received her medical degree from New York Medical College. After completing her residency in urology at the University of Virginia, she went on to complete a fellowship in male reproductive medicine and surgery at Baylor College of Medicine in 2011. After seven years at the Warren Alpert Medical School of Brown University as a clinician and research scientist specializing in men’s reproductive and sexual health, Dr. Hwang joined UPMC and the University of Pittsburgh as an associate professor of urology; director of male reproductive health; and associate professor in the Department of Obstetrics, Gynecology, and Reproductive Sciences. She is one of a small number of specialists in the country who are pursuing the surgeon-scientist career path in the area of male reproductive health and is an active member of the American Association of Tissue Banks and the American Society for Reproductive Medicine.  Dr. Hwang’s clinical interests include male infertility and male sexual dysfunction. Her research focuses on new biomarkers of sperm health, new treatment modalities for Peyronie’s Disease, and male fertility preservation in all ages.

Joy A. Zardecki, BS Senior Vice President of Business Development and Administration

Joy serves as ReproTech's Senior Vice President of Business Development and Administration. Joy holds a Bachelor's degree in Elementary Education from Misericordia University in Pennsylvania. After teaching for a few years, Joy pursued a business path that led to customer service management in the telecom and cryobanking industries.

Joy came to ReproTech in 2009 with more than six years of experience in the cryobank and fertility service industry, including senior management positions in sperm banking, donor sperm, and donor egg programs. She is currently responsible for business development, marketing, and administration. In her spare time, Joy enjoys traveling, hiking, and spending time with her family.

As Vice President of Customer Partnerships, Julie leads pre/post-sales partnerships between IVF clinics and ReproTech. Julie brings over 30+ years of experience in the fertility field to ReproTech and has a proven track record of managing successful sales teams as well as expertise in launching new product lines. Julie is an expert marketing and sales professional. She has a well-known and respected national reputation within the Reproductive Endocrinology community most recently serving as Strategic Account Director at Freedom Fertility/Cigna, and prior to Freedom, VP of Client Services at Univfy, VP of Marketing and Sales at Premier IVF, Director of Client Services at IntegraMed, Western Regional Director at Ferring Pharmaceuticals and Strategic Business Expansion Consultant/Product Manager/Clinical Science Liaison at EMD Serono. Julie holds a Master’s in Marketing from Webster University and a Bachelor of Science in Design Management from the University of Missouri.

Amy Erickson Hagen, MS, TS (ABB) Vice President of Quality Assurance & Innovation

Amy received her Master of Science in Reproductive Physiology from Colorado State University and Bachelor of Science in Animal and Range Science from North Dakota State University. Amy joined ReproTech in 2015 and brings with her over 12 years of project management and regulatory compliance experience in the reproductive industry. Prior to joining ReproTech, Amy served as Corporate Compliance Officer at Genetics & IVF Institute, which includes a sperm bank, egg bank, and infertility practice, where she created and implemented policies, procedures, and audit processes to meet regulatory requirements and built robust quality systems. Her past experience ranges from placental IUGR research, an embryologist/andrologist at an IVF clinic to cryobank manager and technical director. Amy has advocated for sperm banking prior to cancer treatment through partnerships with Fertile Hope and LIVESTRONG to offer a national financial aid program for cancer patients to bank sperm and a mail-in sperm banking kit that was recognized in the Wall Street Journal. She brings clinical infertility, third-party reproduction processing, and regulation, as well as project management knowledge to ReproTech. Amy is a member of the American Association of Tissue Banks, where she currently serves on both the Standards Committee, & Programs Committee. Amy also holds membership in the American Society of Reproductive Medicine, International Society for Biological and Environmental Repositories, and RESOLVE, as well as the American Board of Bioanalysts, where she has received the distinguished level of Technical Supervisor. She enjoys spending time with her husband and two children, watching sporting events, and running around to the kids’ activities.

Danika Batastini, BS Vice President of Partner Operations

Danika serves as the Vice President of Partner Operations and has been with ReproTech since 2007. Danika graduated from the University of Nevada at Reno with a Bachelor of Science. Danika worked as the ReproTech Nevada Site Director for several years, then transitioned to vice president in 2019, overseeing all ReproTech site operations.

Heather is ReproTech's Vice President of Site Operations. She has been with ReproTech since 2005, first serving as the Site Director and Client Services Manager at ReproTech Florida and then as Site Director at ReproTech Texas. Heather holds a Bachelor of Science degree in Secondary Education from the University of West Georgia. She began working in the cryobanking industry in 2002 after teaching and coaching high school students for two years. Heather is an active member of the American Association of Tissue Banks and currently serves as Secretary of the Living Donor Council and previously served as a member of the Education Committee. In her spare time, Heather enjoys playing golf, watching college football, and traveling.

Russell Bierbaum, MST Founder

Russ co-founded ReproTech in 1990 and retired as its President in 2013. Russ has more than 40 years of experience in the cryobanking industry beginning in the early 1970s with the world’s first commercial sperm bank and later serving for many years as its Technical Director. Russ has served as Chairperson and Vice-Chairperson of the Reproductive Council and was a member of the Board of Governors of the American Association of Tissue Banks. Russ has also been a member of many of their committees including Accreditation, Program, Finance, and Public Relations, and currently is serving again on the Finance committee. In his role as Vice-Chairperson of the AATB Reproductive Council, Russ was active in drafting revisions to the AATB Standards to ensure compliance with FDA Regulations. Russ holds degrees from Minnesota State University, Mankato, and the University of North Dakota. Prior to working in the cryobanking industry, he taught Physical Science and Chemistry in the Minnesota public schools. An avid Minnesota Gopher fan, he enjoys college football and basketball and spending time Up North fishing, reading, doing projects, or just relaxing.

Rebecca Bierbaum, BS Founder

Becky is one of Reprotech's co-founders, having helped start ReproTech in 1990. She has more than 25 years of experience in the cryobanking industry having served as the Associate Director of the world’s first commercial sperm bank for 20 years. With a BS Degree from Minnesota State University, Mankato, her early career days were spent in the education field has taught elementary education at several Minnesota schools. Besides cheering on the Minnesota Golden Gophers, Becky swims most days at the local Y and is a mystery reader and movie buff.