Contraline Team

“Great vision without great people is irrelevant.”

Jim Collins

Our Team
View Kevin's bio
Kevin Eisenfrats

Co-Founder and Chief Executive Officer

View Greg's bio
Greg Grover, Ph.D.

Chief Technology Officer

View Robert's bio
Robert Greenleaf

VP of Quality

View Nic's bio
Nic Matsumoto, Ph.D.

Principal Scientist

View Rucha's bio
Rucha Bhat

Research Scientist III

View Tyler's bio
Tyler Chiartas

Product and Quality Engineer

View Lindsey's bio
Lindsey Ott

Project Manager

View Katie's bio
Katie Lloyd

Operations Manager

View Doreen's bio
Doreen Brindise

Office Manager

Interested in joining us?

We are always looking for hard-working, passionate individuals who are excited to bring new contraceptive options to the world. If you enjoy working in small teams and solving difficult problems, you'd be a great fit for Contraline.

We are always looking for hard-working, passionate individuals who are excited to bring new contraceptive options to the world. If you enjoy working in small teams and solving difficult problems, you'd be a great fit for Contraline.

Board of Directors
Tom Thorpe

Tom Thorpe is CEO of Afton Scientific, a cGMP contract manufacturer of sterile drugs and products for use in new drug development and production. Tom has over 30 years of experience in commercial pharmaceutical operations. He is a member of the Board and the Executive Committee of the Pharmaceutical and Bio-Pharmaceutical Outsourcing Association (BPOA) and previously served as Board Chair of the Virginia Biotechnology Association (Virginia Bio). Tom holds a B.S. in Chemical Engineering from the University of Connecticut and an MBA from University of Virginia.

Michael King, PhD

Dr. Michael King is a professor of practice in the Department of Chemical Engineering at the University of VIrginia. Mike had a significant 32-year industrial experience at Merck and Co, Inc. including responsibilities in both the research and manufacturing areas related to the commercialization of new pharmaceuticals and vaccines. He retired as senior VP and advisor to the chairman, president and CEO. He is currently engaged with the Bill and Melinda Gates Foundation in helping de-risk commercialization of a new vaccine technology and previously, was on the Board of Directors of Medivation (acq. by Pfizer).

Kevin Eisenfrats

Kevin Eisenfrats is co-founder and CEO of Contraline. He is an entrepreneur and biomedical engineer who founded Contraline to commercialize the first vas-occlusive male contraceptive. At Contraline, Kevin provides vision, leads business development, commercialization, and intellectual property. He has received numerous awards for the invention behind Contraline and is a Y-Combinator fellow. Kevin received a B.S. in Nanomedicine Engineering from UVA.

Austin Herr

Austin Herr is a Director on Contraline's Board. His background is in Web Development, having receiving a B.S. in Data Modeling and Database Administration, and Masters in Information Technology from Virginia Tech. He also has performed biotech research in Dr. John Herr's lab on the cancer-oocyte antigen SAS1B and is an author on a paper and patent relating to that technology.

Advisory Board
Paul Turek, M.D.

Dr. Paul Turek is an internationally known thought leader in male reproductive medicine. Paul is a fellowship trained, board-certified physician who has received numerous honors and awards for his pioneering work in reproductive urology. Dr. Turek directs The Turek Clinics in San Francisco and Beverly Hills and is an advisor to the NIH, CDC and several biotech startups in Silicon Valley and Los Angeles. Dr. Turek graduated from Yale College, attended medical school at Stanford University, and completed residency training in urology at the University of Pennsylvania. He recently retired as an endowed chair professor of Urology at the University of California San Francisco and now maintains an award winning blog at

Bob Chapin, Ph.D.

Dr. Robert Chapin is an expert in male and female reproductive toxicity. Dr. Chapin served as Senior Research Fellow at Pfizer for 15 years evaluating biomarkers and developing in vitro screening assays for reproductive toxicity. He has first or co-authored 160 scientific papers, book chapters, and reviews. Dr. Chapin was received many awards for his scientific work including from the Society of Toxicology and American Society of Andrology. Dr. Chapin obtained a PhD in Pharmacology from UNC Chapel Hill.

Dr. John Herr, Co-Founder of Contraline
In memoriam


Contraline is deep rooted in Dr. John Herr's essence. Dr. Herr was a visionary, a scientist, and an entrepreneur at the forefront of reproductive medicine. Contraline is continuing his legacy by developing innovating reproductive health products. Learn more about John here.

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