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MOSAIC Medicine
About Us
Welcome to MOSAIC Medicine, your trusted holistic medicine clinic in Rapid City, SD, serving the surrounding areas with personalized, integrative care. Our holistic medicine practitioners create a customized “mosaic” for every patient—blending evidence-informed therapies with whole-person support to help you feel your best from the inside out.
We specialize in women’s health, hormone balancing, gut health optimization, and weight loss management services designed to fit your life. Whether you’re looking for sustainable weight loss, structured weight loss management, or advanced options such as peptide injections—including BPC injections and GLP injections—our team partners with you to build a clear, supportive plan focused on your goals, your biology, and your long-term wellness.
Areas Served
Rapid City, SD | Hill City, SD | Spearfish, SD
What We Offer
Our Specialties include:
- Weight Loss Management Services
- Peptide Injections
- BPC Injections
- GLP Injections
Our Services include:
- Holistic Medicine
- Integrative Medicine
- Hormone Balancing Treatments
- Weight Loss
- Gut Health
- Microbiome
- Leaky Gut
- Dysbiosis
- Gerd and Heartburn
- PCOS
- Nutrition Coaching
- Burnout Coaching
- Health Coaching
- Dietitian
- Hormone Replacement Therapy
- Laser Hair Removal
- Laser Facials
- Xeomin
- Microneedling
- Hydrafacials
- Chemical Peels
- Wellbeing Events
- Red Light Therapy
- IPL Facials
- Photo Facials
- Biote Hormone Replacement Therapy
- Individualized hormone therapy
- Individualized care plans focus on women's overall health utilizing a variety of practices including Western, Eastern, Mental Health, Obesity, and Lifestyle treatments
- Libido Treatments
- Hot Flash Management
- Menopause Treatments
- Brain Fog Treatments
- Weightless medicine for eligible treatment
- Peptide Injections
- BPC Injections
- Compounded GOP Injections
- GOP Injections
- Botox
- Biote Pellets
- Facials
- Aesthetician
- Aesthetic Clinic
- Sermorelin Injections
Our Brands include:
Testimonials
On 4/27/2026
Rick Kahler
had this to say:
I appreciate Dr. G’s ability to take the time to deeply listen and prescribe innovative solutions that address my needs.
On 4/10/2026
jenn gonzalez
had this to say:
Alexia is the BEST!! I enjoy my visits with her and always look forward to them! She listens and looks at your whole picture and treats the underlying cause not just the symptoms which seems to be obsolete from Drs these days! She really cares!
On 4/8/2026
Kara White
had this to say:
Dr. Alexia Gillen at Mosaic Medicine is truly incredible. Balancing the demands of grad school and work can really take a toll on my health, and she has been instrumental in helping me navigate those stressors. I especially appreciate her expertise in women’s health and hormone support; she doesn't just look at symptoms, but looks at the whole person to provide thoughtful solutions that are doable. I always leave her office feeling heard, supported, and empowered. We are so lucky to have a practitioner of her caliber here in Rapid City!
On 4/7/2026
Stacie Dietrich
had this to say:
I cannot recommend Dr. Gillen enough! She truly makes you feel heard and takes the time to understand the full picture of your health. Her focus is on getting to the root of the issues rather than just treating symptoms. You can tell she genuinely cares about her patients and is committed to doing everything she can to help you feel your best.
On 4/5/2026
McKenna Alan
had this to say:
Dr. Gillen has been my saving grace in my healing journey. She’s worked on finding the root cause and has been so kind to support me along the way! I am so thankful to her and am grateful for this healing journey!
Contact Us
MOSAIC Medicine
2800 Jackson Blvd Suite 2 Rapid City, SD 57702
Phone: (605) 503-7020
Email: alexia
Where To Find Us
Follow us on YelpPayment Types Accepted
American Express, Personal Checks, Debit Cards, Discover, MasterCard, Visa, Zelle
Our Hours
Holiday Hours May Vary. Please Call For Details.
Monday: 9:30 AM - 5:00 PM
Tuesday: 9:30 AM - 5:00 PM
Wednesday: 9:30 AM - 5:00 PM
Thursday: 9:30 AM - 5:00 PM
Friday: By Appointment Only
Saturday: By Appointment Only
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