KSN Advisory — Medical Consulting · Regulatory Affairs

About KSN Advisory

Medical Expertise. Regulatory Clarity.

KSN Advisory is an independent, expert-led advisory company co-owned by Dr Karl-Sander Nool and Dr Mart Veerus. Their complementary backgrounds combine evidence-based medical consulting with medical device regulatory affairs, quality management and EU market access support. Clients work directly with the specialists responsible for their engagement.

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Leadership

The two co-owners

Dr Karl-Sander Nool, physician and co-owner of KSN Advisory

Dr Karl-Sander Nool

Co-Owner & Lead for Medical Consulting

Karl-Sander Nool holds an MD degree from the University of Tartu and has professional experience across primary care, clinical leadership, acute internal medicine, and independent medical consulting.

His career has focused primarily on family medicine and the development of primary care services — alongside patient care, he has developed clinical pathways and internal medical guidelines, taught professionals, and led a multidisciplinary team of physicians and nurses as Clinical Lead at Terviseagentuur. At KSN Advisory, Karl leads the company's independent medical consulting, second-opinion, case-review, and B2B clinical advisory work.

Focus areas

  • Independent medical consulting and second medical opinions
  • Medical case reviews and diagnostic and treatment assessment
  • Primary care, family medicine, and acute internal medicine
  • Clinical decision-making and clinical pathway development
  • Clinical leadership and multidisciplinary team management
  • B2B medical consulting and medical analysis for insurers and organizations

Background

  • MD degree, University of Tartu
  • Clinical Lead at Terviseagentuur — leading a multidisciplinary team of physicians and nurses
  • On-call internal medicine physician — assessing acute and complex medical conditions
  • Development of clinical pathways, internal medical guidelines, and professional healthcare education
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Dr Mart Veerus, co-owner of KSN Advisory

Dr Mart Veerus

Co-Owner & Lead for Medical Device Regulation Consulting

Mart Veerus holds an MD degree from the University of Tartu and has professional experience at the intersection of healthcare, medical devices, regulatory affairs, quality management and digital health.

Following his medical education, Mart developed his professional career in medical device regulation, regulatory affairs, quality management, healthcare technology, and medical device product development. At KSN Advisory, he leads the company's Medical Device Regulatory, Quality Management System and CE marking consulting activities.

Focus areas

  • EU Medical Device Regulation and regulatory affairs
  • CE marking and Class I-IIa medical devices
  • Quality Management System and ISO 13485
  • PRRC responsibilities and internal auditing
  • Medical device product development and digital health
  • EU market access

Background

  • MD degree, University of Tartu
  • Person Responsible for Regulatory Compliance (PRRC) at Five Lives and co-lead in regulatory work supporting the successful acquisition of CE marking for a Class IIa medical device, working closely with Hardian Health, an established MDR consulting firm
  • Professional training as an ISO 13485:2016 Internal Auditor for Medical Device Quality Management System
  • Experienced Product Lead, Quality Management System and Regulatory Affairs Consultant  within the medical device and digital health sector. Roles include - Product Lead at HeBa and currently helping  Estonian Health Insurance Fund with the creation and adoption of a centralized, state managed digital health workspace designed for primary care teams in Estonia (PAI)
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