Pediatrix Medical Group Executive and Leadership Team

June, 2026

Leadership Overview

Pediatrix Medical Group has 10 executives leading key functions including finance, information technology, regional operations, medical oversight, and legal affairs.

Driven by a commitment to coordinated, compassionate care, Pediatrix Medical Group delivers clinically excellent services to women, babies, and children across the continuum of care, bolstering high-quality, evidence-based practices through significant investments in research, education, quality improvement, and safety initiatives.

Leadership Roles at Pediatrix Medical Group

  • Executive Vice President & Chief Financial Officer & Treasurer - Kasandra Rossi
  • Group Regional President, Pediatrix Medical - Carlos Perez
  • Division President, Operations (East) - Nicholas Glaser
  • President - Joseph Calabro
  • Division President (West) - Kevin Pitzer
  • President - Peter Winocur
  • Senior Vice President, Chief Information Officer - Cheryl VanPatten
  • Division Chief Medical Officer, Western - Erik Johnson
  • Division Chief Medical Officer, Central (South) - Michael Dwyer
  • Vice President, Senior Deputy General Counsel and Deputy Chief Administrative Officer - Michael Santana
  • Kasandra Rossi - Executive Vice President & Chief Financial Officer & Treasurer

    Kasandra Rossi, the Executive Vice President & Chief Financial Officer & Treasurer at Pediatrix Medical Group, directs all financial operations and treasury functions. Rossi oversees the company's fiscal strategy, ensuring robust financial health and sustainable growth across its extensive network of physician services. This leadership role involves managing capital allocation, optimizing revenue cycles, and maintaining strong relationships with financial institutions. Rossi's oversight extends to budgeting, forecasting, and financial reporting, critical for supporting Pediatrix's commitment to research, education, and quality improvement initiatives. The financial acumen provided by Kasandra Rossi is essential for navigating the complex healthcare landscape and upholding the organization's mission of delivering coordinated, compassionate, and clinically excellent care to women, babies, and children. Rossi's strategic financial management underpins the company's ability to invest in safety initiatives and expand its reach in hospital settings and office-based practices.
    Kasandra Rossi

    Carlos Perez - Group Regional President, Pediatrix Medical

    Carlos Perez, the Group Regional President, Pediatrix Medical at Pediatrix Medical Group, drives operational performance and strategic growth across multiple geographic regions. Perez oversees the execution of the company's clinical and business objectives, ensuring alignment with Pediatrix's mission of providing coordinated, compassionate, and clinically excellent care. This leadership position involves managing regional leadership teams, optimizing resource allocation, and fostering a culture of quality improvement and patient safety. Perez's purview includes ensuring that affiliated clinicians deliver high-quality, evidence-based services in both hospital settings and office-based practices. The operational leadership of Carlos Perez is crucial for expanding the group's reach and impact, supporting specialties from obstetrics and neonatology to pediatric subspecialties and primary care clinics. Perez's focus on regional excellence directly contributes to Pediatrix's sustained investment in research and education, solidifying its role as a leading national provider.

    Nicholas Glaser - Division President, Operations (East)

    Nicholas Glaser, the Division President, Operations (East) at Pediatrix Medical Group, directs operational strategies and execution across the eastern division. Glaser ensures the seamless delivery of physician services, upholding Pediatrix's commitment to coordinated, compassionate, and clinically excellent care. This leadership role involves optimizing operational workflows, managing regional resources, and fostering a culture of continuous improvement and patient safety within hospital settings and office-based practices. Glaser's oversight supports a wide range of specialties, from maternal-fetal medicine and neonatology to pediatric primary and urgent care clinics. The operational focus of Nicholas Glaser is integral to Pediatrix's ability to invest in research, education, and quality initiatives. By driving efficiency and effectiveness in the East, Glaser directly contributes to the company's mission of providing high-quality, evidence-based care to women, babies, and children nationwide.

    Joseph Calabro - President

    Joseph Calabro, the President at Pediatrix Medical Group, drives the overall strategic direction and operational execution of the organization. Calabro leads efforts to ensure the delivery of coordinated, compassionate, and clinically excellent services nationwide, reinforcing Pediatrix's position as a leading provider of physician services. This executive role involves overseeing all aspects of the company's operations, from hospital-based care to office-based practices, and ensuring alignment with the mission of serving women, babies, and children. Calabro's leadership guides significant investments in research, education, quality improvement, and safety initiatives, fostering a culture of continuous advancement. The strategic vision of Joseph Calabro is critical for navigating the evolving healthcare landscape and maintaining high-quality, evidence-based care across all specialties, including obstetrics, neonatology, and pediatric subspecialties.

    Kevin Pitzer - Division President (West)

    Kevin Pitzer, the Division President (West) at Pediatrix Medical Group, directs operational strategies and growth initiatives across the western United States. Pitzer is responsible for ensuring the consistent delivery of coordinated, compassionate, and clinically excellent services, upholding Pediatrix's high standards for evidence-based care. This leadership position involves managing regional operations, optimizing resource deployment, and fostering a culture of quality improvement and patient safety within hospital settings and office-based practices. Pitzer's oversight supports a broad spectrum of pediatric and obstetrical specialties. The operational expertise of Kevin Pitzer is vital for Pediatrix's ongoing commitment to research, education, and safety initiatives. By driving operational excellence in the West, Pitzer directly contributes to the company's mission of providing superior care to women, babies, and children, reinforcing its national leadership.

    Peter Winocur - President

    Peter Winocur, the President at Pediatrix Medical Group, spearheads the strategic vision and operational execution for key areas of the organization. Winocur is dedicated to advancing Pediatrix's mission of providing coordinated, compassionate, and clinically excellent services across the continuum of care. This leadership role involves overseeing critical functions that ensure high-quality, evidence-based care is delivered consistently in hospital settings and office-based practices, supporting specialties from obstetrics to pediatric subspecialties. Winocur's focus includes driving initiatives that enhance patient outcomes, support research and education, and promote safety. The leadership of Peter Winocur is instrumental in maintaining Pediatrix's position as a leading provider, ensuring that affiliated clinicians are equipped to deliver exceptional care to women, babies, and children nationwide.

    Cheryl VanPatten - Senior Vice President, Chief Information Officer

    Cheryl VanPatten, the Senior Vice President, Chief Information Officer at Pediatrix Medical Group, architects the organization's technology strategy and digital infrastructure. VanPatten leads the information technology department, ensuring seamless integration of systems that support clinical excellence and operational efficiency across all service lines. This involves overseeing the development and implementation of secure, scalable IT solutions that enhance patient care coordination, from hospital settings to office-based practices. VanPatten's responsibilities include managing data security, optimizing electronic health records, and driving innovation in health informatics. The strategic direction provided by Cheryl VanPatten is vital for Pediatrix's significant investments in research, education, quality improvement, and safety initiatives. By ensuring robust technological capabilities, VanPatten directly supports the delivery of compassionate and clinically excellent services to women, babies, and children, reinforcing the company's position as a leading provider of physician services nationwide.

    Erik Johnson - Division Chief Medical Officer, Western

    Erik Johnson, the Division Chief Medical Officer, Western at Pediatrix Medical Group, provides critical medical leadership and strategic oversight for the western division. Johnson champions the delivery of coordinated, compassionate, and clinically excellent services, ensuring adherence to high-quality, evidence-based care standards across all specialties. This role involves guiding clinical teams in hospital settings and office-based practices, focusing on areas such as obstetrics, neonatology, and pediatric subspecialties. Johnson's responsibilities include driving quality improvement and safety initiatives, directly supporting Pediatrix's commitment to research and education. The medical expertise of Erik Johnson is essential for maintaining the integrity of care delivery and fostering innovation within the western region. Johnson's leadership ensures that patients receive the best possible outcomes, reinforcing Pediatrix's reputation as a leading provider dedicated to the well-being of women, babies, and children.

    Michael Dwyer - Division Chief Medical Officer, Central (South)

    Michael Dwyer, the Division Chief Medical Officer, Central (South) at Pediatrix Medical Group, provides essential medical leadership and clinical guidance for the central and southern regions. Dwyer is dedicated to ensuring the delivery of coordinated, compassionate, and clinically excellent services, championing high-quality, evidence-based care across all pediatric and obstetrical specialties. This role involves collaborating with clinical teams to implement best practices in hospital settings and office-based practices, focusing on areas like neonatology and pediatric subspecialties. Dwyer's responsibilities include advancing quality improvement and safety initiatives, aligning with Pediatrix's significant investments in research and education. The medical direction provided by Michael Dwyer is fundamental to maintaining superior patient care standards and fostering advancements in the field. Dwyer's commitment ensures that the central and southern divisions uphold Pediatrix's mission for women, babies, and children.

    Michael Santana - Vice President, Senior Deputy General Counsel and Deputy Chief Administrative Officer

    Michael Santana, the Vice President, Senior Deputy General Counsel and Deputy Chief Administrative Officer at Pediatrix Medical Group, provides critical legal and administrative guidance. Santana oversees the legal affairs and administrative functions, ensuring compliance with all regulatory requirements and upholding the company's commitment to ethical operations. This role involves managing legal risks, advising on corporate governance, and supporting administrative processes that facilitate the delivery of coordinated, compassionate, and clinically excellent services. Santana's responsibilities extend to ensuring that all operations, from hospital settings to office-based practices, adhere to the highest standards of quality and safety. The legal and administrative acumen of Michael Santana is essential for supporting Pediatrix's investments in research, education, and quality improvement, safeguarding the company's mission to provide high-quality care to women, babies, and children.

    Explore Leadership Teams in Hospitals & Physicians Clinics

    Frequently Asked Questions Regarding Pediatrix Medical Group Top Executives and Leadership Team

    Who leads Pediatrix Medical Group?
    Pediatrix Medical Group is led by Kasandra Rossi (Executive Vice President & Chief Financial Officer & Treasurer), along with executives such as Carlos Perez (Group Regional President, Pediatrix Medical) and Nicholas Glaser (Division President, Operations (East)).
    Who is part of Pediatrix Medical Group’s executive team?
    The executive team of Pediatrix Medical Group includes leaders such as Kasandra Rossi (Executive Vice President & Chief Financial Officer & Treasurer), Carlos Perez (Group Regional President, Pediatrix Medical), Nicholas Glaser (Division President, Operations (East)) and other senior executives.
    How many executives does Pediatrix Medical Group have?
    Pediatrix Medical Group has 10 executives leading key business areas.
    What roles are included in Pediatrix Medical Group’s leadership team?
    The leadership team of Pediatrix Medical Group includes roles such as Executive Vice President & Chief Financial Officer & Treasurer, Group Regional President, Pediatrix Medical, Division President, Operations (East), President, Division President (West).