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We support cardiac operating rooms in the western United States with best in class technologies.

Our coverage area includes Alaska, Arizona, Arkansas, California (South, North, Bay Area), Colorado, HawaiiIdaho, Iowa, Kansas, MinnesotaMissouri, Montana, Nevada, Nebraska, New Mexico, North Dakota, Oklahoma, Oregon, South Dakota, Utah, Washington, & Wyoming.

Click team member below for bio and respective coverage area.

Chris Ryan

Chris Ryan

John Manuel

John Manuel

Brianne Sylvia

Brianne Sylvia

Patrick Hillis

Patrick Hillis

Aaron Tibbitts

Aaron Tibbitts

Christine Thibaut

Christine Thibaut

Alex Siervo

Alex Siervo

Questions? Contact us via form below

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Chris Ryan


Chris Ryan

Chris Ryan


Chris Ryan

 

President

Chris strikes a balance of ambition and achievement. He leads with a clear vision and will roll up his sleeves alongside others to help make it happen. He is committed to providing exceptional support to customers through innovation and hard work. Prior to Shamrock, Chris spent 9 years with Medtronic, starting with Corporate Pricing & Contracts in Minneapolis before moving to Sacramento, trading his cube walls for Sales life on the road in early 2007. Chris graduated from Gustavus Adolphus College in Saint Peter, Minnesota, Majoring in Financial Economics and Minoring in Biology. He went on to receive his MBA from the Carlson School of Management evening program at the University of Minnesota with a Concentration in Finance.

In his free time, Chris enjoys roasting coffee, travel, snowboarding, and spending quality time with his wife Amanda and son Lincoln. He is proud of his North Dakota roots and feels blessed to be surrounded by so many talented people.

 
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John Manuel


John Manuel

John Manuel


John Manuel

 

Territory

Alaska

Montana

Seattle Area

Vice President

John is a natural combining his intense customer focus with his innate drive and his personable approach. He thrives around people and delivers unparalleled value and smiles to all around him. Following his dreams, John took a stab at the country music scene in Nashville before moving on to a professional career with Eli Lilly & Co in 2003. He joined Medtronic in 2006 and headed west to Seattle in early 2007. In 2010, he partnered with Chris to form Shamrock to take customer support to new heights.John graduated from North Carolina Central University in Durham, double Majoring in English and Political Science, while Minoring in Spanish. He went on to receive a Masters of Communication from Middle Tennessee State University in Murfreesboro.

In his free time, you will likely find John laughing and playing with his wife Kristine and their children Malone, Ella, and Isabella. Despite being all over the country, his extended family remains close and he continues to find inspiration and wisdom from his mother Beverly.

 
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Brianne Sylvia


Brianne Sylvia

Brianne Sylvia


Brianne Sylvia

 

Office Manager

Brianne has a diverse range of talents to support a high-paced sales team and to manage the functional areas of Shamrock from Human Resources to Finance, Sales Support, and more. Her positivity and hard work ethic are greatly appreciated by the entire team as she empowers everyone to spend more time in the field with customers. Brianne studied Kinesiology at Long Beach and earned her Master in Healthcare Administration at Walden University. Her ability to multi-task and switch gears rapidly make her a critical asset to the entire Shamrock team.

Brianne enjoys time with her husband Justin and is an exceptional mom to her four children, including their beautiful baby Cassidy. In a moment of spare time you will find her gardening, visiting her parent’s vineyard, or volunteering in the community.

 
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Patrick Hillis


Patrick Hillis

Patrick Hillis


Patrick Hillis

 

Territory

Oregon

Washington

Sales Representative

Patrick has many talents that make him a successful medical sales professional. His strategic and critical thinking help him to understand the big picture while his hard work and competitiveness help him to perform at a very high level supporting his customers. Patrick earned his undergraduate degree in Communications from the Northwest University in Kirkland, Washington while on athletic scholarship for his abilities on the basketball court. He then went on to volunteer his time with non-profit organizations in South Africa, before relocating to Ireland to earn his Masters of Business Administration.

In his free time, Patrick enjoys fatherhood with his son Myles and daughter Fiona, while still finding time for sports, film, reading historical fiction and drinking good coffee with his wife Teresa.

 
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Aaron Tibbitts


Aaron Tibbitts

Aaron Tibbitts


Aaron Tibbitts

 

Territory

Utah

Idaho

Colorado

Las Vegas

Sales Representative

Aaron sets an unparalleled standard for integrity, discipline, and customer support. He joined Shamrock in 2012 following years of successful pharmaceutical sales, beginning with Merck and progressing into more specialized roles. Aaron rose to the challenge to push his skillset into the fast paced cardiac operating room. With his great attentiveness to customer needs, Aaron has adapted well to become a trusted resource in his territory. Aaron earned his Bachelor of Science degree from the University of Utah in Salt Lake, majoring in Communications.

In his spare time, Aaron enjoys spending quality time with his wife, Wendy and their five children.

 
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Christine Thibaut


Christine Thibaut

Christine Thibaut


Christine Thibaut

 

Territory

San Francisco Bay Area, California

Sales Representative

Christine’s clinical expertise and supportive nature make her a valued resource to customers and peers alike. After 11 years as a Perfusionist, she welcomed the opportunity with Shamrock to support a broader range of stakeholders, while maintaining her core focus on patient outcomes.

Christine earned her undergraduate degree in Biology from Newman University in Wichita, Kansas followed with a certificate in Perfusion Technology from the Texas Heart Institute.  She has multiple clinical certifications including Clinical Certified Perfusionist, Clinical Autotransfusionist, and Perioperative Blood Management Technologist. She earned her Master’s degree in Organizational Leadership from Regis University in Denver, Colorado.

In her free time, Christine enjoys staying active, travel, and skiing. 

 
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Alex Siervo


Alex Siervo

Alex Siervo


Alex Siervo

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Territory

  • Arkansas
  • Iowa
  • Kansas
  • Minnesota
  • Missouri
  • Nebraska
  • New Mexico
  • North Dakota
  • Oklahoma
  • South Dakota
  • Wyoming

Alex brings a wealth of technical expertise and field experience to Shamrock Surgical making him am immediate resource for his customers. 

Prior to Shamrock, Alex was a Technical Specialist for several years for LivaNova. Before that, he worked for Cardinal Health as a Clinical Information Systems Sales Consultant. His expertise and knowledge as a clinical informatics liaison focused on the delivery of effective development, implementation and maintenance of medical devices and clinical information systems within the field of surgery.

Alex earned his undergraduate degree in MIS and Global Business from the University of Mobile. He went on to complete an MBA at FIU’s Chapman Graduate School of Business in Miami, FL with a specialization in healthcare innovation and technology from Duke University.  He has continued his education through specialized courses in Digital Communications and Multimedia at the University of Colorado Boulder.

Colorado is home for Alex where he enjoys all the outdoor activities the state has to offer with his wife and golden retriever. He also enjoys traveling abroad, especially Central and South America as he is fluent in Spanish.