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Get to know your nSequence® support team by checking out their bios below and feel free to contact the person closest to you.
About Us > Sales Support
Director of Sales, nSequence and Guided Surgery
Contact Terri
Terri graduated from Mercyhurst University with a bachelor's degree in Mathematics, Spanish and Education. She started her career in B2B sales almost 20 years ago, then in 2008, decided to take a step out of that world to launch her dental career as a Territory Sales Manager for Straumann. Terri was promoted to Regional Sales Director for the Allegheny region in 2011. In 2016, she was offered a position as the Director of Sales, North America for Solvay Dental 360, a division under Solvay Specialty Polymers. During her time at Solvay, she helped to condition and build the market to support the launch of the new milling disc that was specifically designed for the digital RPD.
In 2017, Terri was offered the position as Director of Sales for nSequence and Guided Surgery at National Dentex. Terri resides in Cleveland, Ohio with her husband and two children. In her free time, she enjoys working out, is an avid runner, and is a big fan of the Cleveland Indians and Cleveland Cavaliers.
Dugan Flinn
Minnesota and Iowa – NDX nSequence Sales Specialist
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Dugan has worked in the dental laboratory industry for nearly 20 years in various roles, including as a technician, laboratory manager and laboratory owner. He serves the Minnesota and Iowa areas.
Lesley Halas
New England – NDX nSequence Clinical Sales Specialist
Lesley is a top-performing, award-winning sales professional with 18 years of sales experience. She started her dental sales career in 2011 with Patterson Dental. Her dental career journey continued with BioHorizons (for over 6 years) as the New York City Territory Manager where she worked side-by-side with top surgeons on implant cases from treatment planning to surgery. Lesley has an extensive sales background focused on providing solutions to help improve the patient experience. She has a proven record of helping her customers grow their practices.
Lesley lives in Jersey City, NJ. In her free time, she enjoys kickboxing, yoga, attending concerts, volunteer work and travel.
Dave Ohler
Midwest – NDX nSequence Clinical Sales Specialist
Dave graduated from Kent State with a BS in chemistry. He spent several years working in pharmaceutical sales for GSK, and spent the last 11 years as an Executive Surgical Territory Manager for Straumann. Dave is also a regenerative product expert. He lives in Columbus, Ohio with his wife Pam and daughter Lauren. In his free time, Dave enjoys hunting and working out.
Russo Valenzuela
Southwest – NDX nSequence Clinical Sales Specialist
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Born and raised in Texas, Russo graduated from the University of North Texas with a BBA degree – the emphasis on sales and marketing. He spent the early part of his career in Austin, TX, working for Philips Oral Healthcare as a territory manager. In 2004, Russo was fortunate to land an opportunity with Astra Tech selling implants, and he was able to grow the Houston market. For the past 16 years, Russo has worked with many residents, dental labs and clinicians throughout central and southern Texas.
Currently living in downtown Houston, Russo has three teenagers and resides with his wife, Natalie. His hobbies include traveling, wine collecting, enjoying live music and golfing.
Krystle Walstrom
NDX nSequence Commercial Operations Specialist
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Krystle graduated in 2006 as a certified dental assistant. She worked as an orthodontic dental assistant before beginning her position as a Technical Customer Service Representative with Zimmer Biomet in 2010. She liaised with clinicians and laboratories on a technical level in regards to ordering, preparation and chairside assistance.
In 2014, she was promoted to Lead Representative for the Bellatek Department, and she also helped get the Encode Empowered Laboratory Program off the ground. She resides in Palm Beach Gardens, FL with her husband and daughter. In her free time she enjoys crafting and boating.
Hallie Wyrick
Southeast – NDX nSequence Clinical Sales Specialist
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Hallie is a talented top performer with 20 years of sales experience. She started her sales career at Merck & Co and jumped into the dental world in 2004. She has worked as a Clinical Territory Manager for Dentsply Sirona, Straumann and Nobel Biocare as well as an Implant Consultant for Palmetto Oral Surgery. Hallie has affected thousands of smile makeovers from single tooth to full mouth guided reconstruction. Her experience in multiple markets has allowed her the opportunity to train residents and grow dental practices while forming strong relationships in the dental community from Maryland to Florida.
She resides in Amelia Island, Florida, with her active-duty military husband and her three children. In her free time, she enjoys yoga, paddle boarding and traveling to fulfill her "foodie" reputation.
Danny Yao
West Area – NDX nSequence Clinical Sales Specialist
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Danny is an award-winning sales executive with 15 years of sales experience. He comes to NDX nSequence with nine years of dental sales experience, calling on both private practices and institutional accounts. Prior to that, Danny had stints in pharmaceuticals, biologics, medical devices and software. Having visited thousands of dental offices in his career and having observed thousands of various procedures, Danny is uniquely experienced to share his insight on the business and marketing side of dentistry.
Danny's educational background includes a B.S. in Biology from UCLA and a MBA from the Paul Merage School of Business at UC Irvine. In his spare time, Danny loves to coach his kids in their sports, smoke meat and explore the world.
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