To amend the Internal Revenue Code of 1986 to provide for the treatment of certain direct primary care service arrangements and periodic provider fees.

Primary Care Enhancement Act of 2017 This bill amends the Internal Revenue Code to: (1) permit an individual to pay primary care service arrangement costs from a health savings account; and (2) allow an eligible taxpayer enrolled in a high-deductible health plan to take a tax deduction for cash paid into a health savings account, even if the taxpayer is simultaneously enrolled in a primary care service arrangement. Under a "primary care service arrangement," an individual is provided coverage restricted to primary care services in exchange for a fixed periodic fee or payment for such services. For the purposes of certain tax-deductible expenses for medical care, the bill expands the definition of "medical care" to include periodic provider fees paid to a primary care physician for a defined set of medical services provided on an as-needed basis.