Dr. Alexia Gillen, DO

Functional medicine physician, Rapid City, SD

Mosaic Medicine

Dr. Gillen is a family physician and the founder of Mosaic Medicine.

2800 Jackson Blvd, Ste 2, Rapid City, SD 57702
At a glance
Board certification
Family physician
Experience
In practice since 2006

Facts on this page last checked October 2026. How we check doctors

About Dr. Gillen

Dr. Gillen is a board-certified family physician and the founder of Mosaic Medicine. Since 2006, she has worked as a physician and leader in clinics and health systems in Rapid City and the Black Hills. Her career has included executive roles as Medical Director and Medical Information Officer, and she practiced primary care and urgent care before Mosaic Medicine.

Mosaic Medicine offers a holistic approach to health and wellbeing and is transitioning to a membership and cash-based model. She believes healthcare can be as individual as the patients it serves. She believes real healing means looking for the root causes of illness with care.

She is a certified life and Enneagram coach. She enjoys travel, dogs, coffee and nature.

Membership and fees

Mosaic Medicine is transitioning to a membership and cash-based model.

Licenses and credentials

Degree
DO
Board certification
Family physician
Other certification
Life and Enneagram coach
NPI
1538353586
Former name
Alexia Georgas

Hospital and practice affiliations

Founder of Mosaic Medicine
Held executive roles as Medical Director and Medical Information Officer

Location

2800 Jackson Blvd, Ste 2, Rapid City, SD 57702
Mosaic Medicine practice page
Directions

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Questions patients ask

Is Dr. Gillen board certified?

Dr. Gillen is a board-certified family physician.

What did Dr. Gillen do before Mosaic Medicine?

She practiced family medicine primary care and urgent care. She also held leadership roles as Medical Director and Medical Information Officer.

Where is Dr. Gillen's office?

Dr. Gillen practices at Mosaic Medicine.

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