Join us at
ISPOR Europe 2025
The global healthcare landscape is evolving fast—are you ready to adapt?
Connect with our Evidence Enabled Experts to explore real-world strategies helping Biopharmaceutical and Medtech leaders overcome today’s toughest challenges. Stop by booth #411 to access exclusive content, speak with our team, and see how we empower companies like yours to lead with evidence.
Alison Isherwood
Director and Head of Epidemiology & RWE
Alison is Head of Epidemiology at Clarivate, bringing over 16 years of healthcare and life sciences consultancy experience. She has deep expertise in partnering with senior industry stakeholders to address crucial business questions using diverse datasets and analytical methods. Her main areas of focus are sizing and forecasting patient populations, modelling disease progression, risk-based modelling for female cancers, and diversity planning.
Stacey Chang-Douglass
Director and Head of Health Economics
Stacey is Head of Health Economics at Clarivate, where she oversees the delivery of economic modelling to support HTA submissions, global model development and country adaptations. With 15 years of health economics experience spanning positions in consulting and at NICE, she provides strategic insights and technical guidance on projects across an extensive range of therapy areas. She also serves as a standing member of NICE’s Medical Technologies Advisory Committee, a role she has held since 2022.
Conor McCloskey
Director, Systematic Review
Conor is a Director in the Systematic Review team at Clarivate, where he leads the delivery of evidence synthesis projects. Conor brings deep expertise across a broad range of review types, spanning therapeutic a comprehensive range of therapy and domain areas. In his current role, he oversees all aspects of the literature review process — from design to final delivery — ensuring high-quality, impactful insights for global healthcare clients.
Leticia Barcena
Consultant in Systematic Review
Leticia is a Consultant within Clarivate’s Systematic Review team, with over 10 years of experience managing and executing literature review projects across a broad range of therapeutic areas. She brings expertise in evidence synthesis, having contributed to the development of clinical guidelines and systematic reviews in both academia and consultancy.
Catherine Bottomley
Director, Clinical Outcomes Assessment
Catherine is a Director in the Clinical Outcome Assessment (COA) team at Clarivate, with over 15 years of experience in COA research. She leads global projects focused on the development and validation of patient reported outcomes and other COA measures, with a particular emphasis on qualitative research.
Sarah Knight
Senior Director, Clinical Outcomes Assessment
Sarah is a Senior Director within the Clinical Outcomes Assessment (COA) team, where she leads the development of patient-centered solutions for Pharma and Biotech sponsors. With over 15 years of COA consulting experience, Sarah brings deep expertise across a wide range of therapeutic areas, including dermatology, rare diseases, and oncology. She is highly skilled in both qualitative and quantitative research methodologies, with extensive experience managing and providing strategic insight into projects involving in-depth patient, caregiver and clinician interviews, psychometric evaluation, survey design, and the elicitation of patient preferences and health state utility values.
Shahzad Ali
Director, Global Pricing and Market Access
Shahzad is a Director in Clarivate’s Global Pricing and Market Access team, where he supports leading Pharma and Biotech companies navigate the reimbursement landscape to achieve the optimum price for their assets. With over 10 years of strategic advisory experience spanning innovative access models, integrated evidence planning, and competitive access strategies, his expertise helps clients position their products effectively, anticipate payer expectations, and maximize commercial success across global markets.
Gaelle Marinoni
Senior Director and Head of Global Pricing and Market Access
Gaëlle is Head of Global Pricing & Market Access at Clarivate, where she helps clients address complex pricing and access challenges. With over 15 years of experience in the field, she has held leadership positions at several strategic consultancies and is passionate about working collaboratively and cross-functionally to advance access ambitions.
Richard Massey
Director and Head of Value Communication
Richard is Head of Value Communication at Clarivate, leading the development of evidence dossiers, payer-facing field tools and other materials to support top Pharma and MedTech companies engage stakeholders with clarity and impact. With over 10 years of experience in market access and healthcare communication, he brings together robust medical writing, impactful creative design, and strategic consultancy to help clients achieve their reimbursement goals.
Paul Cowling
Consultant in Value Communication
Paul is a Consultant within Clarivate’s Value Communication team, specialising in the delivery of high-impact materials including AMCP and global value dossiers, value propositions, HTA submissions, and training resources. With over 5 years of experience in market access medical writing, across a broad spectrum of therapy areas and product types, he helps clients translate complex clinical and economic data into clear, persuasive narratives tailored to diverse stakeholder audiences.
Brigitte Moore
Director, Value Communication
Brigitte is a Director in Clarivate’s Value Communication practice. Since joining the team over 17 years ago, Brigitte has delivered a wide variety of global and local market access and writing projects, including AMCP and global value dossiers, HTA submissions, journal articles, technical reports, posters and more. Her disease areas of expertise include, among others, oncology, rare diseases, hip replacement, rheumatoid arthritis, hepatitis, heart failure, metabolic disease, and nutrition.
Ruth Howells
Senior Director and Head of Client Activation, Collaboration and Experience
Ruth is Senior Director and Head of Client Activation, Collaboration and Engagement at Clarivate, where she drives integrated global pricing and market access and HTA strategies to overcome complex client challenges. With over 22 years of experience in health economics and outcomes research, she has held leadership roles spanning HTA, health economics, evidence generation, and strategic consultancy.
Anton Johansson
Senior Key Account Manager
Anton is a Senior Key Account Manager at Clarivate, helping our customers accelerate innovation, mitigate risk, and increase their return on investment through Clarivate’s suite of bespoke and syndicated solutions. With over 7 years of experience managing customer relationships, he has supported organisations of all sizes from across the global life science sector – from early discovery, launch and post-market authorization – achieve their commercial goals.
Carina Bektur
Senior Consultant Health Economics
Carina is a Senior Consultant in the Health Economics team, with over 11 years of experience in client-facing scientific leadership and health economic research. Carina leads and contributes to all aspects of health economic projects including protocol development, model conceptualisation, building de-novo global and local models, and reporting of model results across a wide range of disease areas.
