Team
Meet our team
Borislav Borissov MD, PhD, DMSc
Education
Dr. Borislav Borissov graduated medicine with distinction at the Medical University – Sofia, Bulgaria in 1990.
Specialization
Until 1998, he worked as a consultant at the Department of Anaesthesiology and Intensive Care, as well as a visiting fellow at Hôpital La Pitié-Salpêtrière in Paris and Addenbrooke’s Hospital in Cambridge, UK. The results of his research there have been published in leading world journals. From 1998 to 2004, he was the director of the Bulgarian Drug Agency (BDA).
Experience
Since 2004, Dr. Borissov has been engaged in international drug regulatory consultancy, management of dedicated clinical research sites, and health technology assessment. He was elected Chairman of the Bulgarian Association of Clinical Research (BACR) for the term 2019-2022. He holds a PhD in Medicine (1997), a Master’s degree in Business Administration (2002, City University, Seattle, WA), a degree in Health Management (2015), and a Doctor of Science (DSc.) degree (2018). He has been an associate professor at the Faculty of Public Health, Medical University Sofia, since 2020. Dr. Borissov is an author and co-author of books, scientific monographs, and peer-reviewed articles, which have been cited over 300 times in Scopus and Web of Science (H-index 6).
Emilia Apostolova MPharm, PhD
Education
Emilia Apostolova graduated pharmacy at the Medical University – Sofia, Bulgaria in 1989.
Specialization
From 1993 to 2005, she worked at the Bulgarian Drug Agency (BDA) as an analyst in the laboratory for quality control (1993-1998) and as head of the department in the Marketing Authorisation Directorate (1998-2005). During her tenure at the BDA, she was a member of the Herbal and Homeopathic Medicines Committee at the Ministry of Health (2000-2005).
Experience
Joining Prescriptia in 2005 as project manager for “Chemical-Pharmaceutical Documentation,” Emilia has been engaged in international drug regulatory consultancy and dossier assessment with a focus on quality (Modules 2.3 and 3). Since 2009, Emilia has been registered as a Qualified Person for batch certification and release. She holds a PhD in phytochemical analysis (1993) from the Bulgarian Academy of Sciences. The results of her research have been published in leading scientific journals with an impact factor greater than 6.
Mariana Stoykova MD
Education
Mariana graduated medicine at the Medical University – Sofia, Bulgaria in 1996.
Specialization
From 1997 to 2000, she worked in the pharmaceutical industry as a medical representative. From 2000 to 2010, she worked as a clinical assessor at the Bulgarian Drug Agency (BDA).
Experience
Since 2010, she has been with Prescriptia, focusing on RA strategies, MA dossier evaluation (Modules 4 and 5), clinical trials, health technology assessment, medical writing, and pharmacovigilance. In 2012, after successfully completing the XEVMPD knowledge evaluation, she was registered at EMA as an EU QPPV.
Samuil Valchanov MD, MBA, EU QPPV
Education
He holds a Master of Medicine, a Master of Surgery, and an MBA in Economics from Copenhagen Business School and Macquarie University, Australia (online degree accomplishment).
Specialization
Samuil is a business professional with 20 years of experience in the pharmaceutical industry, joining Prescriptia as a BD Consultant. He has previously held a variety of leadership roles in multinational companies (Rx/Generics), focused on business operations and new launches (Rx & Biosimilars) in oncology, cardiology, nephrology, and bone health. He is also dedicated to compliance and ethics through personal coaching.
Experience
In 2020-2021, Samuil was assigned to the OUS (Out of US) Worldwide Compliance & Business Ethics Monitoring Team at Amgen Inc.
Iveta Georgieva MPharm
Education
Graduated from the Medical University of Varna, Bulgaria, in 2023 with a Master of Pharmacy.
Experience
Iveta joined Prescriptia in 2024 as a Project Assistant in the CMC Unit, focusing on CTD, dossier due diligence, and life cycle management.