Our Staff 2018-03-28T14:03:25+00:00

William D. Preston, M.D.

Born: Denver, Colorado.
Grew up: Raymond, Alberta, Canada.
Universities: University of Lethbridge; Lethbridge, Alberta, Canada. University of Alberta; Edmonton, Alberta, Canada.
Degrees: Bachelor of Medical Science 1973 – University of Alberta
Medical Doctor 1975 – University of Alberta
Internship: Edmonton General Hospital 1975-1976
Practice Locations: Medicine Hat, Alberta, Canada 1976-1979 Orem, Utah 1979-present
Other: Medical Director for Geneva Steel 1983- 2002
Hospital Appointments: Utah Valley Regional Medical Center, 1979-present
Orem Community Hospital, 1982-present
Timpanogos Regional Hospital, 1998-present
Past Medical Service: President of the Staff at Orem Community Hospital.
Member of the Combined Boards of Orem Community & UVRMC
Chairman of the Family Practice Department UVRMC
Member of the State of Utah’s Physician Assistant Licensing Board
Past Civic Service: Member of the Orem City Library Board
Memberships: Utah State Medical Association
Utah County Medical Association
Personal: Married, 5 children, and proud grandfather of 19

Shelley Day, APRN, CFNP

Born and Raised: Orem, Utah
Degrees: Bachelor of Science – Brigham Young University
Masters of Science in Nursing, APRN – University of Utah
Practice Locations: UVRMC labor & delivery 2000-2001
IHC Homecare 2001-2002
Cherry Tree Family Practice – June 2002 to present
Certifications: Certified Family Nurse Practitioner since 2002
Memberships: Utah Nurses Association
Utah Nurse Practitioners
American Nurses Association
Personal: Married, 4 Boys


Chelsea G. Marshall PA-C

Born: Phoenix, Arizona
Raised: Carson City, Nevada
Universities: Brigham Young University
Pacific University of Oregon
Practice Locations: Cherry Tree Family Practice
Memberships: American Academy of Physician Assistants
Utah Academy of Physician Assistants
Personal: Married, 3 children




Shawn Gibbs PA-C

Born: Provo, Utah
Degrees: B.S. in Exercise Science from Brigham Young University
Masters of Physician Assistant Studies from Touro University in Nevada
Practice Location: Cherry Tree Family Practice from November 2011-Present
Certifications: Certified Physician Assistant
Personal: Married, with two boys & two girls. In his off time, Shawn can be found in the outdoors, doing something active; or maybe writing music.



Chad Duford PA-C

Chad Duford is a certified physician assistant specializing in family medicine. Chad is originally from West Jordan, UT. He completed his Bachelor of Science in Exercise Science from Brigham Young University in Provo, Utah.  He then earned his Master of Science in Physician Assistant Studies from Touro University in Henderson, Nevada.  As a physician assistant, Chad has experience working in Primary Care as a state employee and as an Urgent Care Provider for the University of Utah.  He also has experience in Physical Medicine and Rehabilitation, specifically working in pain management. Chad joined Cherry Tree Family Practice in February, 2016 and cares for both new and returning patients.  When not working, Chad enjoys spending time with family, playing sports, enjoying the outdoors, and volunteering in his community and church.


Jefferson Allen PA-C

Born and Raised: Orem, Utah
Degrees: Bachelor of Science in Biology – Utah Valley University
Masters of Physician Assistant Studies – Touro University in Nevada
Practice Locations: Cherry Tree Family Practice – December  2016 to present
Certifications: Certified Physician Assistant
Personal: Married,  with one boy.  Loves to spend time in the mountains snowmobiling or on a lake wakeboarding.


Other Staff


Allie Anderson – Receptionist

Becky Draney – Billing & Referrals

Samantha Kundis – Part-time Receptionist

Jen Johnson – Part-time Receptionist


Angie Zabriskie – Medical Assistant



Tasha Tipton – Medical Assistant


Meghan Espanet – Medical Assistant


Taylor Freestone – Medical Assistant


Kristin Valerio – Medical Assistant


Kasey Dutson – Medical Assistant


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