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About Us
About Us
About Us
Our Team is a select group of experienced chemists and professionals 
that hold themselves and others to the highest quality and scientific standards. 
Our staff comes with extensive backgrounds working at both other cannabis labs
 and across many other scientific industries. 
Pacific Star Labs takes pride in only hiring the most competent team members,
providing first-class training, and professional development opportunities. 
By valuing quality over quantity, 
Pacific Star Labs offers not only premier lab testing services, 
but also exceptional customer service above-and-beyond the industry norm.

Our Team
David Winternheimer, PhD, PPM -- General Manager

David has founded and advised more than 8 start-ups over the past decade in business development leadership positions, enabling many of them to achieve profitability and/or exit opportunities in their first years of operation. In addition to deep experience in sales/marketing, he also provides technical expertise to the team. David received his PhD in organic chemistry from UCLA and his Postdoctoral Professional Masters in Bioscience Management (PPM) from the Keck Graduate Institute of Applied Life Sciences.

James Borgese, BS -- Lead Scientist & Lab Manager

James is one of the first chemists to have worked in heavy metal (ICP-MS) analysis in cannabis. As lead scientist, he is responsible for much of Pacific Star Labs’ method development/validation and continues to contribute to method optimization. James attended UC Berkeley and received his BS in chemical engineering from CSU Long Beach.

Sheryl Silverman, BS -- Microbiology & Quality Managers

Sheryl has over a decade of experience in research using PCR with a background in molecular genetics. She also has over 5 years of experience in managing ISO quality systems. As both microbiology and quality managers, she oversees microbial contamination testing and the full quality management system. Sheryl received her BA in chemistry with a minor in biology from Arcadia University. 

Tomas Garrett, BS, MBA -- Chemist

Tomas is an analytical chemist with years of chromatography experience in investigative analysis, cannabis testing, and food science. With a drive toward business development, Tomas earned his Executive MBA from UW-Milwaukee to combine his passion for science, with business in mind. He is committed to utilizing his unique background to improve the quality and efficiency of the cannabis testing industry.

Tomas Garrett -- Chemist

Tomas is an analytical chemist with years of chromatography experience in investigative analysis, cannabis testing, and food science. With a drive toward business development, Tomas earned his Executive MBA from UW-Milwaukee to combine his passion for science, with business in mind. He is committed to utilizing his unique background to improve the quality and efficiency of the cannabis testing industry.

Lucia Hernandez, BS --  Microbiologist & Lab Technician

Lucia is well versed in ISO 17025 processes through her tenure working at Eurofins, a leading environmental testing lab in the USA. She supports the team from sample accession through analytical batch preparation. She received her BS in biology from CSULA.
Linda Chan, BS -- Lab Technician & Analyst

Linda has over two years of experience in research using aseptic cell culture techniques for MTT assays and glutathione quantification with a background in cancer metabolism. As a lab technician, she prepares samples for analysis, optimizes workflow, and identifies bottlenecks in sample preparation. Linda received her BS in Chemistry from CSUN.

Megan Doss, BS -- Quality Coordinator & Analyst

As an engineer with a background in aerospace, Megan draws from her years of experience with Operations and Quality Control. Having earned her degree at CSU Long Beach in chemical engineering, Megan is a proud SoCal Local bringing a fresh perspective to the cannabis industry.

Ajay Mistry, BS -- Lab Technician & Client Liaison

With over 5 years of small business background, Ajay supports the team in a multitude of ways. From assisting with laboratory work to customer service, Ajay helps oversee and coordinate efforts between all departments. He strives to provide exceptional customer service and has an exceptional passion for this industry.

Anatoly Chlenov, PhD -- Head of Business Development

Anatoly has a diverse experience as a cannabis sales and business development manager, laboratory instrumentation salesman, a process chemist, and a scientist. He holds a PhD in Organic Chemistry from Princeton University and an MS in Analytical Chemistry from Seton Hall University. He had an honor to work with Robert Grubbs at Caltech, a 2003 winner of the Nobel Prize in Chemistry. Anatoly has 10 years experience in sales, business development, and sales management. 

Aaron Green, PhD -- Business Development Director

Aaron manages business development activities at PSL, bringing 15+ years of experience in both chemistry and sales/marketing. Aaron received his PhD in chemistry from UCLA.
Gabriel Wilson -- Field Operations & Client Liaison

Gabe Wilson has over a decade of experience in customer service, communication, and building long term customer relationships. As an integral member of the client-facing team, he is responsible for conducting field operations (sampling) and customer service activities. 

RJ Fenske -- Director of Marketing

RJ is an engagement specialist focused on people’s core needs, emotions and behavioral decisions. He brings an extensive background in digital media marketing and strategic development to improve user engagement across all mediums. He builds and nurtures the complex cross-functional groups through an ever evolving digital landscape. With a diverse background ranging from the entertainment industry, big pharma, biotech startups and health & wellness. He is devoted to enhancing global collaboration to empower better user experiences and accelerate the development of products that serve people's true needs.
Kat Wilson -- Operations Manager

Kat is an experienced administrator and office manager, helping several new companies establish themselves over the past decade. Kat supports all departments across the organization to ensure the company operates at optimal efficiency at all times.

About Us
Our Team is a select group of experienced chemists and professionals 
that hold themselves and others to the highest quality and scientific standards. 
Our staff comes with extensive backgrounds working at both other cannabis labs
 and across many other scientific industries. 
Pacific Star Labs takes pride in only hiring the most competent team members,
providing first-class training, and professional development opportunities. 
By valuing quality over quantity, 
Pacific Star Labs offers not only premier lab testing services, 
but also exceptional customer service above-and-beyond the industry norm.

Our Team
David Winternheimer, PhD, PPM -- General Manager

David has founded and advised more than 8 start-ups over the past decade in business development leadership positions, enabling many of them to achieve profitability and/or exit opportunities in their first years of operation. In addition to deep experience in sales/marketing, he also provides technical expertise to the team. David received his PhD in organic chemistry from UCLA and his Postdoctoral Professional Masters in Bioscience Management (PPM) from the Keck Graduate Institute of Applied Life Sciences.
James Borgese, BS -- Lead Scientist & Lab Manager

James is one of the first chemists to have worked in heavy metal (ICP-MS) analysis in cannabis. As lead scientist, he is responsible for much of Pacific Star Labs’ method development/validation and continues to contribute to method optimization. James attended UC Berkeley and received his BS in chemical engineering from CSU Long Beach.

Sheryl Silverman, BS -- Microbiology & Quality Managers

Sheryl has over a decade of experience in research using PCR with a background in molecular genetics. She also has over 5 years of experience in managing ISO quality systems. As both microbiology and quality managers, she oversees microbial contamination testing and the full quality management system. Sheryl received her BA in chemistry with a minor in biology from Arcadia University. 

Tomas Garrett, BS, MBA -- Chemist

Tomas is an analytical chemist with years of chromatography experience in investigative analysis, cannabis testing, and food science. With a drive toward business development, Tomas earned his Executive MBA from UW-Milwaukee to combine his passion for science, with business in mind. He is committed to utilizing his unique background to improve the quality and efficiency of the cannabis testing industry.

Lucia Hernandez, BS -- Microbiologist & Lab Technician

Lucia is well versed in ISO 17025 processes through her tenure working at Eurofins, a leading environmental testing lab in the USA. She supports the team from sample accession through analytical batch preparation. She received her BS in biology from CSULA.
Linda Chan, BS -- Lab Technician

Linda has over two years of experience in research using aseptic cell culture techniques for MTT assays and glutathione quantification with a background in cancer metabolism. As a lab technician, she prepares samples for analysis, optimizes workflow, and identifies bottlenecks in sample preparation. Linda received her BS in Chemistry from CSUN.

Megan Doss, BS -- Quality Coordinator & Analyst

As an engineer with a background in aerospace, Megan draws from her years of experience with Operations and Quality Control. Having earned her degree at CSU Long Beach in chemical engineering, Megan is a proud SoCal Local bringing a fresh perspective to the cannabis industry.

Ajay Mistry, BS -- Lab Technician & Client Liaison

With over 5 years of small business background, Ajay supports the team in a multitude of ways. From assisting with laboratory work to customer service, Ajay helps oversee and coordinate efforts between all departments. He strives to provide exceptional customer service and has an exceptional passion for this industry.

Anatoly Chlenov, PhD -- Head of Business Development

Anatoly has a diverse experience as a cannabis sales and business development manager, laboratory instrumentation salesman, a process chemist, and a scientist. He holds a PhD in Organic Chemistry from Princeton University and an MS in Analytical Chemistry from Seton Hall University. He had an honor to work with Robert Grubbs at Caltech, a 2003 winner of the Nobel Prize in Chemistry. Anatoly has 10 years experience in sales, business development, and sales management. 

Aaron Green, PhD -- Business Development Director

Aaron manages business development activities at PSL, bringing 15+ years of experience in both chemistry and sales/marketing. Aaron received his PhD in chemistry from UCLA.
Gabriel Wilson -- Field Operations & Client Liaison

Gabe Wilson has over a decade of experience in customer service, communication, and building long term customer relationships. As an integral member of the client-facing team, he is responsible for conducting field operations (sampling) and customer service activities. 

RJ Fenske -- Director of Marketing

RJ is an engagement specialist focused on people’s core needs, emotions and behavioral decisions. He brings an extensive background in digital media marketing and strategic development to improve user engagement across all mediums. He builds and nurtures the complex cross-functional groups through an ever evolving digital landscape. With a diverse background ranging from the entertainment industry, big pharma, biotech startups and health & wellness. He is devoted to enhancing global collaboration to empower better user experiences and accelerate the development of products that serve people's true needs.
Kat Wilson -- Operations Manager

Kat is an experienced administrator and office manager, helping several new companies establish themselves over the past decade. Kat supports all departments across the organization to ensure the company operates at optimal efficiency at all times.

Pacific Star Labs

621 W Rosecrans Ave, Suite #104
Gardena, CA  90248

(310) 408-0965

Accreditation No. 107244
Certificate No. L20-207
International Standard ISO/IEC 17025:2017

Pacific Star Labs

621 W Rosecrans Ave, Suite #104
Gardena, CA  90248

(310) 408-0965

Accreditation No. 107244
Certificate No. L20-207
International Standard ISO/IEC 17025:2017