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Peter started his career with his own office supply and printing business in the early 1970s. He developed excellent relationships with his clients, including a doctor who persuaded him to leave his company for the relatively new world of vitamins and supplements. In 1974, he entered the industry as a regional sales representative for NutriDyn, nutrition-based supplements.

Peter and his wife Kathleen founded Nutritional Specialties, Inc in 1978 and quickly became the largest distributor for Seroyal Brands based in Concord CA., and Reckeweg Homeopathics of Germany. NSI left Seroyal Brands after it was sold to ICN Pharmaceuticals in 1990. That was when they created the Professional Health Products, PHP, brand.

Peter was motivated by the desire to formulate and produce high-quality supplements for the doctors and healthcare practitioners he had partnered with for the last 15 years. NSI has always been positioned for growth and innovation. That’s why NSI was one of the first companies to import and offer New Zealand glands and tissues. Peter guided the expansion of PHP from a handful of products sold in the United States to nearly 400 with additional sales in Canada, Australia, England, New Zealand, South Korea, and more.

In constant pursuit of wanting to help others, the MethylGenetic Nutrition® line of products was created, allowing genetics/epigenetics to play an essential role in your patients' precise nutritional needs. With more than 70 products, MethylGenetic Nutrition® is the most comprehensive line of genetic/epigenetic formulas on the market.

In 2018, Peter and Kathy purchased the manufacturer of their supplements, Randal Optimal Nutrients, Inc., With Peter’s guidance, NSI, and RON will continue to grow and drive cutting-edge nutritional innovation that makes a difference in people’s lives.

Heather Lord - VP of Sales & Operations

A graduate of La Roche University, with a Degree in Psychology, with an emphasis on Animal Science and Psychology. Heather started her career at Nationwide Insurance where she inspected homes for insurability. From there she was recruited to Royal Canin Veterinary Diets, an M&M Mars Company.


It was at Royal Canin that Heather’s career in the healthcare industry began. During her seven+ year tenure, she rose to Sr. District Manager, providing the crucial link between veterinarians and superior nutrition for disease-state dogs and cats. From there, Heather entered the tech world at Athenahealth, the largest third-party biller in the Us, where she managed a sales team and more than 200 distribution partners across 13 states. Her team played a critical role in the field, introducing and selling cloud-based healthcare solutions to licensed healthcare practitioners.

She joined her family’s business in 2018 with nearly 20 years of sales, marketing, and business development experience. She’s often found at conferences, trade shows, and seminars, acting as the face of Nutritional Specialties Inc./PHP®. She also is the acting VP of Operations for Randal Optimal Nutrients, Inc., the sister company of NSI.  


Her current priorities include; sales and sales management, website and software enhancements, product rebranding, formularies, marketing, and new product development.

Darek Dubieszko - VP Production

After graduating with a degree in Food Production from the Agricultural University of Poznan, in his native Poland, Darek moved to the United States to continue his studies at Ohio State University. In 2005, he relocated to Santa Rosa, CA where he began working for General Hydroponics, a division of Hawthorne Gardening Company.

As head of the Research & Development department, Darek oversaw product formulation and managed rigorous Quality Assurance processes, ensuring top-tier products for the global market. 

His vast experience and adept knowledge earned him a quick promotion to Operations Manager, where he effectively orchestrated high-volume manufacturing and warehouse operations.

He joined Randal in 2021 as VP of Operations and Production and brings over two decades of operations, quality, and production experience to the team.

A contagious sense of optimism guide Derek both in the workplace and while enjoying the outdoors with his wife and beloved dog, Tank. Always eager for adventure, on weekends, he can be found free-diving or spearfishing in the Pacific Ocean.

Kat Muir - Director of Quality

Kat graduated from California State University, Chico with a degree in Microbiology. She got her first taste of quality assurance working in the dairy industry at Sierra Nevada Cheese Co.


There she started out as a Laboratory Supervisor and worked her way up to Quality Manager, where she focused on implementation and improvements to operations, quality, and safety. She then moved on to the oil industry at Adams Oils where she gained expertise in product research and development, and sensory evaluation with special work on infant formulas.
She joined Randal in 2020, serving as the Director of Quality, bringing her years of experience in product development and quality management where she continues to ensure high-quality products are produced.

An avid cook, outdoor enthusiast, and dog mom to a Corgi named Loki, Kat brings a sense of curiosity, a nurturing attitude, and a keen attention to detail to Randal and is dedicated to making sure our quality is second to none.

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