Leadership
Our Team

Jonathan Spero, M.D
Founder & CEO
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Christina DeJesus MSN, RN, FNP
President & Chief Innovation Officer
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Sofia Lefleur
Director of Client Relations

Tracy Harden, PMD
Director, Meetings & Events Medical Services
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Karen Boyce-Layne
Senior Operations Director, Worksite Health
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Michaela Combs
Population Health Manager
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Physicians
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Jennifer Stoeber, M.D.
Chief Medical Officer

Pieter Esterhay, MD
IHP North America

Kevin Friend, MD
IHP North America

Jason Woo, M.D., M.B.A.
IHP North America

Fidias De Leon, M.D.
IHP North America

Jennifer Johnson, M.D.
IHP North America

Dana Perry, M.D.
IHP North America

Merrick Lipman, M.D.
IHP North America

Howard Yang, M.D.
IHP North America

Dr. Starkys Calvillo Contreras
IHP North America
Dominican Republic

Dr. Edgar Cervantes
IHP North America
Mexico

Dr. Amir Safa
IHP EUROPE
Spain

Dr. Fabio Matamoros Córdoba
IHP North America
Costa Rica

Richard H. Kaszynski, MD, MA, PhD
IHP Asia
Japan

Dr. Maitiu O. Tuathail
IHP Europe
Ireland

Dr. Ola Aly
IHP Africa
Egypt

Dr. Marlon Avalos
IHP North America
Mexico

Edit Gara, MD, PhD
IHP Europe
Hungary
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Medical Team

Joe Harden, PMD

Angie Alburquerque, PMD

Tiffany Beard, PMD

Jason LaPointe, PMD

Tyler Strong, PMD

David Steed, PMD

James Hawkins, PMD

Kim Collins, PMD

Brad Roberts, PMD

Marjorie Williamson, PMD

Erik Jesse, PMD

Melissa McNally, MMSc, BCEM PA-C, NRP

Daniele Shearer, PMD
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Lt. Jason Cheung, PA-C

Jean-Aristide Gahungu, PMD

Brian Nadler, PMD, MS

April Inganna, PMD
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