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Contact


Contact

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Contact


Contact

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

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

Click team member below for bio and respective coverage area.

 

Chris Ryan

John Manuel

 
 

Aaron Tibbitts

Anette Perez

Christine Hofer

 

Leo Marin

Marci Michel

Nadine Roth

Nate McNeill

Wes Duke

Will Eagleson

 

Easton Rindy

Nancy Zenon Alvarez

 

Questions? Contact us via form below

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Chris Ryan


Chris Ryan

Chris Ryan


Chris Ryan

 
 

President

Chris leads ambitiously 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, and spending quality time with his wife Amanda and their children Lincoln, Oliver, and Vivienne. 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

 
 

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 Isabelle. 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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Aaron Tibbitts


Aaron Tibbitts

Aaron Tibbitts


Aaron Tibbitts

 

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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Anette Perez


Anette Perez

Anette Perez


Anette Perez

Sales Representative

After 9 years as a Clinical Perfusionist with vast experience in Minimally Invasive Heart Surgery, Anette joined Shamrock Surgical to pursue a new opportunity in Sales supporting the Gulf Coast

Anette earned her undergraduate degree in Biology from Florida International University in Miami, FL with a second bachelor's degree in Cardiovascular Perfusion from Barry University. She enjoyed her experience as a clinician in a fast paced environment, but is excited for a new challenge supporting a territory of clinicians from a new vantage point..

Anette enjoys her free time with her french bulldog Gucci and travel abroad.

 
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Christine Hofer


Christine Hofer

Christine Hofer


Christine Hofer

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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Leo Marin


Leo Marin

Leo Marin


Leo Marin

Sales Representative

Leo has been a cardiac surgical device sales professional in the Sacramento area for 14 years. His passion to support technology to advance clinical practices is strong and he enjoys complex problem solving with his customers. These traits, combined with his warm personal approach, have earned Leo broad appreciation, trust, and respect.

Leo attended California State University in Sacramento on a Division 1 soccer scholarship as a goalkeeper. He graduated in 2003, double majoring in Finance and Risk Management & Insurance. 

In his free time, you will likely catch Leo with his wife Amber and their two daughters, Marley and Lyla. Whether coaching the girls in soccer or over a family meal, you are sure to find the Marins full of love and laughter. 

 
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Marci Michel


Marci Michel

Marci Michel


Marci Michel

Sales Representative

Marci’s was introduced to cardiac patient care via the cath lab before pivoting to perfusion. She had a successful career as a clinical perfusionist pumping cases, opening heart programs, and taking on increasing roles of responsibility all the way up to VP of Operations for a national perfusion company. She moved over to industry where she had successful tenures with LivaNova and Medtronic. She joined Shamrock in the summer of 2023 ready to leverage her experience and relationships to support CVORs with critical capital instruments and exciting new implantable technology in Helios CardiaMend.

Marci earned undergraduate degrees in Health Occupations Education from the University of Iowa and Perfusion Technology from the University of Texas, Texas Heart Institute. While working full-time, she pursued two graduate degrees from the University of St. Francis in Health Services Administration (MHA) and Business Administration (MBA).

In her personal time, Marci enjoys quality time with her husband and her two grown children. She has a huge passion for horses, working on their Texas ranch and actively participates in reining and ranch cowhorse shows.

 
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Nadine Roth


Nadine Roth

Nadine Roth


Nadine Roth

Sales Representative

Nadine began her professional career as a Physician Assistant working in Cardiothoracic Surgery in Lexington, Kentucky.  She was recruited into the world of medical sales in 2005 and hasn’t looked back since!  Fast forward: she has been a top-producing medical device sales professional in the cardiac arena in the greater Pacific Northwest for the past 12 years. Friendly and enthusiastic, she is a natural teacher whose underlying passion is providing best-in-class therapies that improve patients’ lives. 

Nadine earned her undergraduate degree in Zoology from Brigham Young University in Provo, UT, followed by a Master’s Degree in Physician Assistant Studies from Arcadia University in Glenside, Pennsylvania.  

She and her husband Ron are the proud parents of a 2 ½ year old German Shorthaired Pointer, Pepper.  They all enjoy long trail runs, home-cooked meals and snuggling in front of a roaring fire.  

 
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Nate McNeill


Nate McNeill

Nate McNeill


Nate McNeill

Sales Representative

Nate provides a high level of support to his customers through strong communication, responsiveness, and work ethic. Prior to Shamrock, Nate had five years of successful medical sales experience in the craniofacial trauma sector. He takes challenges head on to drive solutions for CVOR teams to achieve the greatest level of patient care. Prior to sales, he had success in customer analytics, corporate accounts, and finance.    

Nate graduated with a Bachelors of Science in Economics from Arizona State University in 2010. In his free time, he enjoys fishing, golf, live music, traveling, and motorsports. 

 
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Wes Duke


Wes Duke

Wes Duke


Wes Duke

Midwest Sales Director

Wes brings over 15 years of medical device & OR experience to Shamrock and the Midwest area.  He thrives on engaging with customers to deliver strategic solutions.

Prior to joining Shamrock, Wes enjoyed 10 years at Intuitive Surgical where he successfully built and led multiple sales and clinical marketing teams across the US. His formative years in cardiac surgery and perfusion technologies were with Medtronic in the Pacific Northwest from 2007-2012.

Wes graduated from Gustavus Adolphus College in Minnesota with a degree in Honors Philosophy & Biology. He also obtained a formal culinary & wine degree in Florence, Italy while working in Tuscany.

Wes and his wife, Katie, are proud parents of three children and live in Kansas City. In his free time, you will find him sharing his passion for food and hospitality with others.

 
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Nancy Alvarez


Nancy Alvarez

Nancy Alvarez


Nancy Alvarez

Sales Support

Nancy joined Shamrock in the summer of 2021 to support reps in the field with quotes, inventory, and a variety of other responsibilities. She studied at the University of California Davis and graduated with a degree in Sociology. While new to her career in the medical device industry, she is excited to continue learning from all the talented individuals around her.

In her free time, you'll find Nancy traveling, doing cross-fit, hiking, backpacking, or spending time with family.

 
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Will Eagleson


Will Eagleson

Will Eagleson


Will Eagleson

Service Contract Coordinator

Will joined Shamrock in early 2022 to support Service Contract coordination across our western geography. As the son of a nurse and an electrician, he enjoys both the clinical and biomedical application of instruments. He studied Managerial Finance and Accounting at the University of North Dakota and as a people oriented person, he is driven to provide top tier customer service. He is eager to start his career in the medical device industry and feels fortunate to be surrounded by such great people.

In his free time, you will likely find Will outdoors whether it be hunting, fishing, golfing or spending time by the lake.