“She's up to date on current medical practices, listens attentively, is nonjudgmental and really cares about finding ways to improve your overall health.”
Castle Rock, CO · Virtual
Functional Medicine Doctor in Castle Rock, CO.
Prévant Health is a virtual concierge functional medicine practice caring for adults and families across Colorado — from Castle Rock and Parker to smaller communities around Douglas County. Root-cause medicine, delivered from your living room. A virtual concierge functional medicine practice delivering virtual functional medicine, integrative medicine, and holistic care for Castle Rock patients.
- 5.0★ patient-rated
- Board-certified NP
- Menopause Society Certified
- HSA/FSA eligible
- Virtual visits
Start Here
Free 15-min phone consult
Talk with Erin about functional medicine for Castle Rock, CO patients.
Direct access to your dedicated Provider
Same-week virtual visits, no rushed appointments
Direct provider messaging and texting between visits
Where We Care for Patients
Serving Castle Rock, Douglas County — and neighboring Parker, Highlands Ranch, Lone Tree, and Franktown.
Prévant Health is fully virtual, so patients across Douglas County and the surrounding area receive the same concierge-level functional medicine care — from wherever home is.
Is this you?
What Castle Rock patients come to Prévant Health for.
How Virtual Care Works in Colorado
Three steps, all from home or office.
1. Meet Erin by video
Every visit is 60 minutes — no waiting rooms, no drive across Colorado.
2. Labs at home or the office
A Getlabs mobile phlebotomist comes to you and delivers samples to Labcorp or Quest. Prefer a walk-in? Draw sites in Castle Rock, Parker, and everywhere in between.
3. Care coordinated near you
Your personalized plan is coordinated with providers and services near you in Colorado.
One Relationship · Every System
The reasons Castle Rock patients come to Prévant Health.
Castle Rock · Free 15-Min Consult
Talk to Erin before you commit. No pressure.
See if Prévant Health is the right fit for what you're navigating in Castle Rock — hormones, cognition, longevity, or all of the above.
No obligation · HSA/FSA eligible · Under 60 seconds to book
Your Provider
Erin Phamvan
UCLA BS · Vanderbilt MSN · Menopause Society Certified · IFM-Trained · ReCODE 2.0
Erin is a board-certified nurse practitioner and Menopause Society Certified Practitioner (MSCP) with advanced training through the Institute for Functional Medicine and Apollo Health's ReCODE 2.0 cognitive-prevention protocol.
Patient Reviews
5.0★ on Healthgrades.
"She's up to date on current medical practices, listens attentively, is nonjudgmental and really cares about finding ways to improve your overall health."
"Erin really personalized my care and would sit with me during our visits to make sure every question or concern I had was addressed."
"She listens with pure intention, makes you feel heard and seen, and deeply cares about getting to the root of problems."
Common Questions
Everything you'd ask on the call.
Common draw sites include Quest — Castle Rock, Labcorp — Parker. Any Quest or Labcorp near you works.

A modern digital experience
Your care, in your pocket.
The Prévant Health mobile app and HIPAA-compliant patient portal put your entire care experience in one place.
- Direct provider messaging and texting between visits
- Appointments
- Virtual visits
- Medications
- Lab results
- Care plans
- Billing
- Announcements

Castle Rock, CO · Book Your Free Consultation
Ready to feel better in Castle Rock?
Our patient roster is intentionally smaller and opens monthly. Start with a complimentary 15-minute consult — bookable right now — to see if we're the right fit for what you're navigating in Castle Rock.
What patients say
5.0 ★ across patient verified reviews
Book Your Free Consult
Take the first step toward a longer healthspan.
Three quick steps to book your free consult in under a minute.