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Mark Halladay

1999-2000 Harkness Fellow Chief Executive New Possibilities National Health Service (NHS) Trust Essex

Harkness Project Title: A Comparative Study of Services for People with Developmental Disabilities

Mentor: Harold S. Luft, Ph.D.

Placement: University of California, San Francisco P.

Biography at time of Harkness Fellowship: Mark Halladay, a 1999-2000 Commonwealth Fund Harkness Fellow in Health Care Policy, is chief executive of New Possibilities National Health Service (NHS) Trust in Essex, which is the UK's largest NHS Provider of care to people with learning disabilities. He has led the development and delivery of services in general hospital, mental health and learning disability services. He is also a fellow of the University of Essex's Health and Social Service Institute and a member of the National Confederation of Health Authorities and the Trust's Learning Disability Policy Group. His research interests in organizational behavior and theories of effective management.


Project: Halladay’s project aimed to: identify, describe and compare current models of organizing and funding services for people with developmental disabilities in the U.K. and California; compare the delivery of care for people with developmental disabilities with that of general health care; and identify the current and future challenges in meeting the needs of developmentally disabled people.  He undertook a literature review, analyzed state and federal policies, and conducted interviews and field visits with key service regulators, providers, purchasers, users and their representatives.


Career Activity Since Fellowship


  • Chief Executive, Suffolk Mental Health Partnership NHS Trust, 2004
  • Chief Executive, Chelmsford Primary Care Trust, 2002

Current Position: Chief Executive, Suffolk Mental Health Partnership NHS Trust, Suffolk House, St. Clements Hospital. (Updated 1/2014)


E-Mail: [email protected]

Selected Publications:

Halladay PM, Bero L. "Implementing evidence based practice in health care," Public Money and Management 2000 Oct; 20(4):43–50.

Harrington C, Tonner C, Wellin V, Kitchener M, Kaskie B, Halladay PM, Crawford C, Ganchoff C, Newcomer R. "The Role of Medi-Cal in California's Long-Term Care System," Presented to the Department of Social and Behavioral Sciences, University of California, San Francisco, July 2000.