Tamara Killion advises health insurers, service providers, consultants, and trade associations on health and welfare compliance, government enforcement actions, and legislative and regulatory initiatives.

Her practice includes all aspects of the Affordable Care Act (ACA) including insurance market reforms, qualified health plan standards, Exchange/Marketplace rules, section 1557’s nondiscrimination provision, the employer responsibility requirement, and the ACA’s other tax provisions.

Before joining Groom, Tammy clerked for the Honorable Carlos F. Lucero of the Tenth Circuit Court of Appeals and then joined the U.S. Department of Labor as an attorney in the Office of the Solicitor’s Honors Program. After working at the Department of Labor, she continued representing employers and plans in ERISA fiduciary litigation and employment class action litigation with a large national firm.

At Groom, Tammy served as a member of the firm’s Executive Committee. Her practice also includes counseling large employers on the establishment and operation of their health care and other welfare plan programs, including ACA compliance, plan design, claims administration, compliance with ERISA’s fiduciary responsibility provisions, and HIPAA requirements.

Outside of her work for clients, Tammy is a frequent speaker on topics related to the ACA and the health insurance market.

Previous Experience

  • United States Department of Labor Honors Program


  • Honorable Carlos Lucero, Tenth Circuit Court of Appeals

Honors & Distinctions

  • Listed, The Legal 500 US, Healthcare: Health Insurers (2017)
  • Rising Star, Super Lawyers, Employee Benefits and Health Care (2013-2015)

I want to provide our clients with a map to enable them to get where they want to go.


Related Resources

COVID-19, Publications


Groom Publication



Groom Benefits Brief



Groom Benefits Brief



Groom Benefits Brief