VANGUARD HEALTH SOLUTIONS - Key Persons


Alexandra Raspanti

Job Titles:
  • Clinical Integration Coordinator
Alexandra Raspanti helps primary care practices enrolled in our Clinically Integrated Network, the Vanguard Partner Network, improve care and outcomes and reduce costs. She ensures standards across group are communicated, implemented, followed, and updated regularly. Alexandra also serves as a medical neighborhood liaison between the practice and specialists. She holds a Master's in Healthcare Administration from Seton Hall University and a Bachelor's in Health Science from Sacred Heart University.

Daimion Haughton


Dr. Peter Carrazzone

Job Titles:
  • Member of the Board
  • President of Vanguard Medical Group

Dr. Sarah Wistreich

Job Titles:
  • Medical Director
  • Member of the Board

Dr. Thomas McCarrick

Dr. Thomas McCarrick has been practicing in geriatrics and family medicine for more than three decades. For the past 12 years, he has focused on population health strategies in primary care, growing his population health team from 1 to 7. Dr. McCarrick has built strong relationships with payers and other providers in New Jersey to promote value-based care initiatives. His goal is to always put the patient first and create programs that will benefit the overall health and wellness of the community.

Katherine Fowler - CEO

Job Titles:
  • Chief Executive Officer
Katherine Fowler has more than 20 years of experience in healthcare management and holds an MHA from Virginia Commonwealth University and a Graduate Certificate in Population Health from Thomas Jefferson University. Her goal is to connect the independent practice community with cost-effective tools and strategies that bring results. She strives to create value and alignment between patients and providers with new care models and strategies. The result is a connected community of talented individuals sharing best practices and providing extraordinary care throughout New Jersey.

Lisa Hall

Job Titles:
  • Vice President of Human Resources
Lisa Hall has 20 years of progressive leadership expertise in the pharmaceutical and medical industries. Her robust background in organizational development, strategic leadership coaching, training, and employee relations is pivotal to employee engagement, retention, and satisfaction, as well as culture transformation. She has led committees to transform an organization's culture and develop creative ideas to get employees engaged. Her extensive success in talent acquisition has helped organizations source successful long-term candidates.

Nalie Kernizan

Nalie Kernizan provides comprehensive medication management to practice leaders. Her goal is to improve the control of chronic conditions and reduce healthcare expenditures. She educates medical assistants on how to properly review medications with patients and counsels providers on disease-specific treatment options. She has successfully helped reduce hemoglobin A1c by 2% in patients with uncontrolled diabetes through medication recommendations and helped achieve four stars in our medication adherence measures in two Medicare Advantage contracts.

Peter Rutherford - CFO

Job Titles:
  • Chief Financial Officer
Peter Rutherford has more than 25 years of healthcare experience in finance, strategy, and administration. In his previous roles, he founded and was the CEO of an IPA-based global capitation risk contractor in New Jersey. Peter has extensive knowledge in the fields of medical billing and collections, medical records software implementation, actuarial consulting, and physician management. He enjoys working with organizations to develop strategies that deliver value and improve how practices manage their finances, review payer contracts, and reduce workflow inefficiencies in billing and collections.

Saloni Joshi

Job Titles:
  • Clinical Data Analyst