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Mackenzie Gill

Actuarial Manager
Windsor, CT, US
Main +1 860 687 0100 | Office +1 860 687 0176

Mackenzie Gill is an actuarial manager in the Hartford office of Milliman. She joined the firm in 2020.

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Experience

Mackenzie assists with a variety of projects for both public and private sector clients. Her experience includes supporting Medicare Part D and EGWP plan pricing and strategy. Mackenzie also has experience modeling monthly financial projections and projecting the impact of changes to the Medicare Part B and Medicare Part D programs.

Mackenzie currently serves as a point of contact for Hartford Health’s recruiting efforts.

Publications

Read their latest work

Article

Relationship of medication adherence and inpatient and emergency department utilization in Medicaid

26 May 2026 - by Jake K. Klaisner, Mackenzie Gill, Briana Botros, Ryan LeRoy
Medicaid beneficiaries with respiratory or mental health conditions who adhere to their prescribed medication regimens show fewer inpatient and emergency department visits.
Article

MOOP there it is: In 2025, Part D beneficiaries are spending $1,200 on average to satisfy the $2,000 out-of-pocket maximum.

02 October 2025 - by Madeleine Feller, Mackenzie Gill, Kevin Pierce
Despite higher demand for high-cost specialty medications, significant changes in Medicare Part D design have yielded lower out-of-pocket costs for members.
Article

2025 financial impacts for Part D Employer Group Waiver Plans (EGWPs)

22 January 2024 - by Andrea Sheldon, Mackenzie Gill
This whitepaper explores the financial impact of the benefit redesign and trends on EGWPs, estimating potential net premium increases for selected benefit designs.
Article

Medicare Part B premium dynamics explained

23 December 2021 - by Kevin Pierce, Mackenzie Gill
Calculating Medicare Part B premiums seems simple enough, but their relationship with Social Security payments and income can make the task a bit more complicated.