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Our team

David Leitner

Managing Senior Director

David’s healthcare industry experience spans over 25 years and includes several senior commercial management positions. David has gained Canadian and global experience in many therapeutic areas, including CNS/Neuroscience, Endocrinology, Cardiovascular, ID, Women’s Health, Pain and Inflammation, Gastroenterology as well as specialty, biologics, SEBs and rare diseases.  He has worked for several leading pharmaceutical companies, including Eli Lilly, Roche, Wyeth and for the past 10+ years with CSL/Innomar Strategies.  As the Lead of CSL, David’s strategic insight and innovative approach is helping clients achieve successful implementation of strategies to address product launches, new indications, reimbursement challenges and lifecycle management issues.

Michelle Chambers

Director, Client Operations

Michelle Chambers has over twenty-five years’ experience in the pharmaceutical and healthcare industry. Michelle’s experience includes both brand marketing and project management. She has worked extensively on both the client and agency side for product launches and communication programs. Michelle manages the regulatory approval processes for CSL’s patient assistance programs, coordinates client deliverables, develops card program patient and HCP materials and manages accounts for several CSL clients.

Stewart Steven

Senior Manager, Strategic Services

Stewart comes to CSL with a strong background in sales, marketing and information technology, having successfully worked across a number of pharmaceutical companies, both directly and in vendor roles. He has proven leadership in identifying opportunities, building and maintaining strong customer relationships, and has the perseverance to overcome challenges and see it through. His passion, consistent focus and service, ensure customer satisfaction. A career in selling and commercial operations combine to create an approach based on prioritization, keeping it simple and effective implementation.

Anisa Variava

Senior Manager, Strategic Services

Anisa is a pharmacy technician with over nine years of experience in the healthcare and claims adjudication industries. Her experience in the pharmacy sector and her knowledge from the drug benefits industry has helped her develop, launch and manage dozens of patient assistance programs including co-pay assistance, bridge to reimbursement, e-samples, and LOE. Anisa has analyzed, designed, and serviced multiple programs for Cameron Stewart LifeScience clients. Her focus CSL is developing client related card programs and account management.

Silke Aisenpreis

Manager, Strategic Services

Silke has over twenty years’ experience in the healthcare and pharmaceutical industry.  Silke’s experience includes sales operations, analytics and marketing for both brand and generic companies.  Silke is also a pharmacy assistant and has spent over 25 years in retail pharmacy.  Her knowledge of both retail pharmacy and pharmaceutical industry experience will allow her to provide customized insights and build effective solutions.

Rachel Ennis

Program Operation Manager

Rachel has over twenty years’ experience in the insurance and pharmaceutical industry. Rachel’s experience includes sales and account management for insurance and adjudication companies. Rachel is also a certified pharmacy technician and has spent over 25 years in retail and hospital pharmacy. Her knowledge and experience in insurance and the pharmaceutical industry will help her to support the operation side of the card and payment platforms.

Shreya Ramesh

Manager, Client Operations

Shreya is an agile and business-driven healthcare professional with a demonstrated history of working in the pharmaceutical and healthcare industry. Shreya’s specialties include management of client deliverables and accounts, project/product management and launches, regulatory approval processes and national retail pharmacy support and adjudication. Her analytical and critical thinking methods to problem solve help improve operational efficiencies, team productivity, and help create innovative, technology-enabled solutions to polish healthcare delivery.

Vanja Radisa

Operations Associate –IPP

Vanja comes to CSL with 15 years of pharmaceutical experience including retail, long-term care, specialty, PCCA compounding and consulting. Vanja graduated from Mohawk College with a pharmacy technician diploma. She first got her start in pharmacy as a technician where she helped process and prepare prescriptions as well as working as a liaison between patient’s and insurance companies. As a consulting technician Vanja was in charge of training and processes for all nurses and staff at long-term care facilities along with conversions. Throughout Vanja’s 15-year career she has helped others along the way and developed meaningful relationships.

Work with us

As an industry leader, Cameron Stewart LifeScience (CSL) provides comprehensive payment assistance solutions to the pharmaceutical industry throughout the product lifecycle.