"La economía del narcotrafico", Escuela Naval de los Cadetes Almirante Padilla, Cartagena, April 2025.
"Health providers' payment schemes with precision medicine", Digital Health Workshop, hosted at TBS-TSE, Toulouse, April 2024, PUC, Seminar, Santiago, June 2024, LAGV conderence, Marseille, July 2025.
“Genetic Testing with Attraction to Chance: from Pooling to Separating Contracts” , the CEAR/MRIC Behavioral Insurance Workshop 2022, Munich, December 2022, Toulouse Business School (Teprem) seminar, Toulouse, March 2023, ENS Paris-Saclay, December 2023.
"Two-sided market structures in the provision of health care: An overview", keynote lecture at the Euopean Health Economics Workshop, hosted at the University of Paderborn, June 2022.
"How medical services reimbursement schemes affect access and health expenditure: Evidence from the Colombian Healthcare System", CEDE Seminar, Bogota, May 2022.
"Optimal Unemployment Insurance and Informality", in The Economics of Informality Conference 2020, hosted by the University of Rosario, Bogotá, November 2020.
"Plataformas digitales y mercados relevantes", Mesa 3 del Foro Retos de la Competencia en el Entorno Digital, Organizado por IFT, México (virtual), November 2020.
"Políticas en salud y COVID-19", Webinar organised by University of Los Andes, October, 2020.
"Impacto de la concentración del mercado móvil en Colombia sobre la Competitividad", Workshop sobre Telefonía móvil hosted by University of Los Andes (CEDE), September, 2020.
"Fallas de mercado y fallas de Estado en el sistema de salud colombiano", Ecocaribe, Universidad del Norte, Barranquilla, November, 2019.
"Genetic tests and epigenetic: When prevention may rescue cross-subsidies in health insurance markets", York University seminar, May, 2018, EHEW hosted by the University of Verona, May 2019, and Cede Seminar, University of Los Andes, October, 2019, ESSEC (Paris), December, 2019.
"Out-of pockets in the Colombian Healthcare system", Fundación Santa Fé, May, 2018.
"Price-cap in colombian drugs market: an impact evaluation", with Arturo Harker and Daniela Zuluaga, Colombian Health Ministry (Bogota), October, 2017, CEDE seminar, University of Los Andes, November, 2017, ACEMI congress, Bogota, November 2018, LACEA, Montevideo, May 2023.
"Controlling Sellers Who Provide Advice: Regulation and Competition", EHEW hosted at the University of Oslo, May 2017, LAGV conference hosted by AMSE (Aix-en-Provence), June 2017, Cede seminar, University of Los Andes, September 2017, Seminar at the University of Rosario, September 2017, UQAM seminar (Montreal), October, 2017, UNAB seminar, Bucaramanga, October 2017, seminar at the University of Javeriana, Bogota, October, 2017.
"Personalized medicine, genetic testing and health insurance" in Simposio de la Medicina Traslacional a la Medicina Personalizada, Universidad del Rosario, Bogotá, December 2016.
"Adverse selection versus risk discrimination with genetic testing: An experimental approach", Workshop Les Journées de la Chaire Santé, hosted at University Paris Dauphine, March 2016, EHEW hosted by Hamburg University, May 2016, Jornadas de Industrial Organización, Universidad de Mallorca, September, 2016, CEDE seminar, University of Los Andes, September, 2016, Seminar University of Rosario, Bogota, November 2016.
"Health Care Insurance Payment Policy When the patient and the Physician may collude", Workshop hosted at Paris School of Economics, April 2015, EHEW hosted at Toulouse School of Economics, May 2015, LAGV conference hosted at Aix Marseille School of Economics, June 2015.
"Inequality, Segregation and Fiscal Decentralization", University of Los Andes, CEDE seminar, March, 2012; Universidad Javeriana, Bogotá, April 2015, Gretha seminar, University of Bordeaux, May, 2017.
"Unemployment Insurance in Presence of Informal Sector, Latin American Workshop in Labor Markets and the Informal Sector", ITAM, September 2014.
"Pagos por desempeño en el sistema de salud Colombiano", Fedesarrollo, with Blanca Florez, Camila Franco, Abel Gonzalez and Jose Luis Ortiz, Bogotá, September, 2014; Colombian Ministry of Finance, April, 2015.
"Genetic testing and health insurance market: an overview", 2nd congress of ITMO, Personalized Medicine, Paris, 2013, December.
"Regulation of the health care systems", Health Economics Symposium, Sao Paulo, 2013, August.
"Health Insurance and Diversity of Treatment: A Policy Mix Perspective", Health Economics Symposium, Sao Paulo , 2013, August.
"Como regular los precios de los medicamentos en Colombia," Colombian Health Ministry Seminar, 2013, August.
"Competition in the nursing home market: a two-sided market approach", PET conference, Lisbon, 2013 July.
"Unemployment insurance and informal sector", Getulio Vargas Foundation seminar, Sao Paulo, 2013 June.
"El sistema de salud colombiano - Reforma y Propuesta", Afadeco Valledupar, March 2013; Fedesarrollo Seminar, April 2013; Seminar at the University Sergio Arboleda, April 2013; Seminar at the University of Rosario, September 2013 .
"Genetic testing with primary prevention and moral hazard", Workshop on the Economics of Personalized Medecine, University of Autonoma, Barcelona, 2012 December, EHEW-University of Lyon II, 2013 May.
"Optimal unemployment insurance in presence of informality", Banco de la Republica (Bogotá), October 2011 Fedesarrollo (Bogotá), CEDE Seminar Los Andes University (Bogotá), 2011 November; and Toulouse School of Economics, 2011 December.
"Competition in two-sided markets and providers’ remuneration schemes under common network externalities", University of ICESI (Cali), 2011 April; Toulouse School of Economics, 2011 January; and University of Javierana (Bogotá), 2011 October, Health Economics Workshop, National University of Santiago, 2012 March, JOLATE, University of Los Andes, 2012 October, University of Dauphine, Paris, 2012 December.
"Informality and optimal public policy", PET 2010, Istanbul.
"Two-sided Competition with Common Network Externalities", Crese Seminar Besancon, May 2009; Rosario Seminar Bogota, October 2009; AHEC Conference Boston, October 2009; CEDE Seminar University of Los Andes Bogota, November 2009, University of Rennes 1, December 2009, Fedesarrollo, March 2010.
"Location and Quality in Health Care Markets", LACEA, Rio de Janeiro, November 2008; LAGV conference 2010, Marseille.
"Regulación del sector de la salud: Algunas reflexiones", Seminario Fundación Santafe, April 2007, Bogota, Seminario Universidad Javeriana, June 2007.
"El sistema de salud Colombiano a través los ojos de un economista europeo", Semana Francesa, University of Externado, Bogota, September 2006, FORO University of Rosario, November 2006.
"Competition between Health Plans: A Two-Sided Market Approach", presented in Leuven (Belgium), Workshop in Health Economics, February 2006, presented in Konstanz (Germany), May 2006 and Budapest, ECHE Congress, July 2006, University of Rosario (Bogota), November 2006, University of Los Andes (Bogota), November 2006, Banco de la Republica (Bogota), June 2007.
"Pharmaceutical innovation, reference pricing and therapeutic classes", presented in the University of Los Andes, Bogotá, April 2006, the University of Rosario, Bogotá, April 2006 and The University of Externado, Bogota, August 2006.
"Le système de santé français : une organisation complexe", Seminary Universidad de Rosario, Bogota, March 2005.
"Ex post Moral Hazard, Supply Induced Demand and Optimal Health Insurance Contract", with R. Lesur, Journées Louis-André Gérad-Varet, Marseille, Juin 2004, Delta Seminar, Paris, October 2004, Laser Seminar, Montpellier, December 2004, University of Bologna, January 2005, Séminaire Etape, University of Paris I, January 2005, EGRIE Congress, Barcelona, September 2006 .
"Contrat d’assurance maladie et risque moral ex ante : peut-on s’affranchir d’une franchise ? ", with R. Lesur (Direction de la Prévision), Congrès du Sesame, Caen, September 2003 and Congrès de l’Afse, Paris, September 2003.
"Competition between MCOs and Conventional Insurers: Segmentation Effect, Vertical Restraints and Welfare Consequences", with Edmond Baranes, Séminaire du Gate, Université de Lyon II, January 2003 and Séminaire de l’Université Libre de Bruxelles, February 2003, Saet Conference, Rhodos, July 2003, Earie Congress, Helsinki, August 2003, Séminaire du Lameta, Université de Montpellier, December 2003, Universidad de Los Andes, Bogota, February 2005, Universidad de Chile, Santiago, February 2005, Universidad de Rosario, Bogota, March 2005.
"Estimation de l’efficience des dépenses de santé à l’échelon départemental par la méthode DEA", with Sylvain Pichetti, Colloque de l’Applied Econometrics Association, Santé et Régionalisation, October 2002, Ajaccio.
"Le risque moral ex post est-il si néfaste", with A. Couffinhal and M. Grignon, Congrès Calass, September 2002, Tolède.
"Assurance maladie et comportement d’autoprotection", Séminaire de la Mire, June 2002.
"Comportements de prévention et risque maladie", Université Catholique de Lille, Séminaire Labores, June 2002.
"Risque de reclassification et comportement de risque moral sur les marchés d'assurance maladie : la première inefficacité peut-elle éliminer la seconde ? ", 28TH Seminar of the European Group of Risk and Insurance Economists, Strasbourg, September 2001, Journées des Doctorants en Economie de la Santé (JDES), Octobre 2001, Paris, Séminaire du Legos, Paris Dauphine, April 2002 and Journées de Microéconomie Appliquées, Rennes, June 2002.
"Tarification à la pathologie et paiement à l'acte dans le secteur de la médecine ambulatoire", Congrès de l'AFSE, September 2001, Paris.
"Health Insurance, Competition and Auction", (avec Pierre-Henri Morand), présenté aux Journées de Microéconomie Appliquée, Nancy, June 2001 and Colloque des Economistes de la santé, July 2002, Paris.
"Régulation du secteur de la médecine ambulatoire et tarification à la pathologie", présenté au Colloque du Sesame (Séminaires d’Etudes et de Statistiques Appliquées à la Modélisation en Economie), Dijon, September 2000.
"Assurance maladie et concurrence", Journées des Doctorants en Economie de la Santé (JDES), Marseille, September 2000.
"Estimation de l’efficience des dépenses de santé à l’échelon régional par la méthode DEA", (avec Sylvain Pichetti), Journées de l’AFSE, May 2000 and Séminaire GATE, June 2002.
"Analyse des phénomènes de risque moral ex ante sur les marchés d’assurance maladie", Colloque du Sesame (Séminaires d’Etudes et de Statistiques Appliquées à la Modélisation en Economie), Saint-Etienne, September 1999.
"Concurrence par comparaison et collusion", with Sylvain Pichetti, Congrès de l’AFSE, Paris, September 1999.
"Réglementation de l'assurance maladie et concurrence par comparaison", with Sylvain Pichetti Veime Colloque d’Economie Publique, Brest, June 1999.