Meet the Pediatric Critical Care Team

Pediatric Intensivists

We value our staff and make their safety, satisfaction, and empowerment one of our top priorities. Our nurses are provided a blended orientation learning experience featuring online modules, simulations and hands-on unit experience.


Balagangadhar Totapally, MD

Director, Division of Critical Care Medicine
Medical Director, Pediatric Intensive Care Unit
Director, Pediatric Critical Care Fellowship Program

Primary Office: Miami

Clinical Interests: Neonatology, sepsis, resucitation, neurocritical care monitoring


G. Keith Meyer, MD

Medical Director, LifeFlight® Neonatal and Pediatric Transport Services
Medical Director, ECLS/ECMO and Apheresis Services

Primary Office: Miami

Clinical Interests: Pediatric specialty transport, neurological injuries, airway protection, sepsis, systemic inflammatory response, shock


Hugh J Ladd, MD

Assistant Medical Director, ECLS/ECMO Services

Primary Office: Miami



Prithvi Raj Sendi Keshavamurthy, MD

Primary Office: Miami

Clinical Interests: Non-invasive hemodynamic monitoring, Sepsis, Extra Corporeal Life Support (ECMO).



Michael A Leoncio, DO

Primary Office: Miami

Clinical Interests: Mechanical ventilation, extubation readiness


Ramesh C Sachdeva, MD

Senior Vice President and Chief Clinical Officer, Nicklaus Children's Health System

Primary Office: Miami

Additional Office: Miami


Andre Raszynski, MD

Clinical Interests: Mechanical ventilation


Critical Care Nurse Practitioners

Yamile Viera, MSN, RN

Nurse Manager
Pediatric Intensive Care Unit (PICU)

Lian M. Santiago, MSN, RN, CPN

Clinical Specialist
Pediatric Intensive Care Unit (PICU)

Michelle Parmenter, MSN, APRN, FNP-BC

Pediatric Intensive Care Unit (PICU)

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Christina Alonso, BSN, RN

Night Nurse Supervisor
Pediatric Intensive Care Unit (PICU)

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Mirtha Gonzalez, MSN, APRN

Director of Operations
Pediatric Intensive Care Unit (PICU)

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Kristen Lopez, MSN, APRN, FNP-BC

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Xoana Zampieri, BSN, RN, WCC, CPN

Wound Care Specialist

Additional Staff

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Nina Talamas

Clinical Nutritionist

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Gabriella Blyumin, PharmaD, BCPPS

Clinical Pharmacy Specialist

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Karla Filosa, MA Ed, CCLS

Certified Child Life Specialist

Nicklaus Children's Pediatric Specialists
 A physician identified with a Nicklaus Children’s Pediatric Specialists logo is an employee of Nicklaus Children's Health System. All other physicians listed on the website are in private medical practices.