DPC Directory
M.D.

MARK MCCOLL

Internal Medicine

Board certified 20+ years in practice Active NPI · 1659312239 Licensed in TN

About

Dr. Mark B. McColl is an East Tennessee native who grew up in west Knoxville and attended the University of Tennessee, where he felt called to medicine. After earning a Master of Arts in General Theological Studies from Covenant Theological Seminary, he completed his medical degree at the University of Tennessee Health Sciences School College of Medicine. He served on the student honor council and was active in the Christian Medical and Dental Association. Dr. McColl completed a combined Internal Medicine/Pediatrics residency at the University of Kentucky College of Medicine in 2006. In 2012 he began developing a Direct Primary Care (DPC) model, launching Trinity Direct Primary Care in January 2016. In 2019 he founded Pillar Primary Care, PLLC to continue the DPC mission, emphasizing the Four Pillars of Good Health—nutrition, exercise, sleep, and peace—while providing personalized, relationship‑focused care for patients of all ages.

Credentials

Training & certification

Medical school
University of Tennessee Health Sciences School College of Medicine (2002)
Residency
Internal Medicine/Pediatrics - University of Kentucky College of Medicine (Knoxville)
Board certification
American Board of Internal Medicine and American Board of Pediatrics
Designations
Fellow, American College of Physicians (ACP)
Years in practice
20+ years
Specialty
Internal Medicine

Training programs

  • Residency Internal Medicine/Pediatrics · University of Kentucky College of Medicine (Knoxville)
  • Internship Internal Medicine/Pediatrics · University of Kentucky College of Medicine (Knoxville)

Licensing

Licensure & registration

NPI
1659312239 · active
Primary license
Tennessee · MD0000040833

Practice

Where Dr. MCCOLL practices

Professional memberships

  • Direct Primary Care Alliance · Member
  • Association of American Physicians and Surgeons · Member
  • American College of Physicians · Member
  • American Association of Pediatricians · Member
  • National Lipid Association · Member

Community

Dr. McColl enjoys outdoor activities such as hiking, backpacking, kayaking, and camping. He is an active member of Cedar Springs Presbyterian Church and has served in leadership roles with Reformed University Fellowship during college.

DPC experience

Started DPC: January 2016

Patient feedback

Ratings

  • Healthgrades

    17 reviews

    4.1

Data aggregated from publicly available sources including the NPPES Registry, practice websites, and professional directories.