Skip to content

Opening in San Diego in January 2027

Medicine Built for How You Live.

Concierge-level internal and physical medicine in San Diego—built around how well you live, not just how long.

Our mission · The practice

To care for both your health and your function, so you keep doing what you love for years to come.

FXN Medical Group is a husband-and-wife internal medicine and physical rehabilitation practice here in San Diego. As two practicing physicians, we stepped outside the insurance-driven model to bring back the kind of neighborly practice where your doctor actually knows you and your family. Because we spend quality time with our patients, we can offer whole-person care that is both personal and precise.

Small by design

A small panel.

We keep our panel capped at 150 patients so there's time to know each of you.

Clinical depth

Old-fashioned care, new-fashioned tools.

We pair comprehensive biomarker testing and optional genomic testing with AI-assisted analysis, reviewed by your physician, for Precision and Mastery members.

Direct access

No insurance maze.

We don't bill insurance. Your care is shaped by you and your physician, not by billing codes.

Meet your physicians · Internal medicine + physical medicine & rehabilitation

Two doctors. One plan.

A husband-and-wife team of physicians in San Diego, uniting Internal Medicine and Physical Medicine & Rehabilitation under one practice.

Nicholas Schmidt, MD

Co-founder · Internal medicine

Nicholas Schmidt, MD

  • Board-certified in Internal Medicine
  • Practicing hospitalist in the San Diego community.
  • Clinical focus: preventive internal medicine, cardiometabolic health, weight management, hormone health, and lifestyle care.
Xian Schmidt, MD

Co-founder · Physical medicine & rehabilitation

Xian Schmidt, MD

  • Board-certified in Physical Medicine & Rehabilitation (PM&R)
  • Specialist in musculoskeletal, sports, and functional rehabilitation medicine
  • Clinical focus: movement evaluation and ultrasound-guided joint, tendon, and orthobiologic care

Measured by what you can do

Beyond blood work: we measure how your body functions.

We start with a clear baseline of your internal health and physical performance, then re-test and review it with you over time, so your care keeps pace with how you're actually doing. Testing varies by membership.

  • Preventive Internal Medicine

    A comprehensive evaluation and biomarker assessment, read with care by your physician before health risk becomes disease.

  • Functional Baseline

    Submaximal VO₂, resting metabolic rate, body composition, grip and lower-body strength, gait, balance, and movement quality, measured at your FXN Assessment.

  • Physical Medicine & Rehabilitation

    Physician-led musculoskeletal evaluation, diagnostic ultrasound, and targeted joint and soft-tissue care, focused on helping you keep doing what you love.

Aerial view of waves over a rocky coastline.

The patient experience

How your care comes together.

  1. Learn your story.

    We start by listening: your history, your goals, and what you love to do.

  2. Build a plan.

    Together we turn your results into a plan to achieve your goals.

  3. See it through.

    Follow-ups, re-testing, and plan updates keep your care matched to how you're actually doing.

Membership

Three ways in.

Compare full tier inclusions →

Foundation

Your personal internist. Small panel, direct access.

$249/mo

Annual prepaid discount available

  • Annual comprehensive visit and follow-up
  • 30–60 minute visits
  • Direct physician messaging
  • Foundation Biomarker Panel
  • Complimentary regenerative consult
Join the Waitlist

Strictly Limited Cohort · By consultation only.

Mastery

Our annual program: the most complete membership, with the most physician time and testing.

$895/mo

Annual prepaid discount available

  • Everything in Precision, plus
  • Unlimited and priority access
  • Quarterly physician check-ins as needed
  • Annual FXN Assessment: baseline test and year-end retest
  • Written function and nutrition plan, refreshed at six months
  • Mastery Biomarker Panel, genomics, a continuous glucose monitor, and a one-time microbiome assessment
Request a Consultation

Not ready for a membership yet? Start with a single visit.

The FXN Assessment

An in-depth baseline workup, a Physician results visit, and a written plan. Join any membership within 30 days and your enrollment fee is waived.

Book an Assessment →

FXN Regenerative

FXN members receive discounted pricing.

Regenerative care is evolving quickly, with new treatments emerging, including orthobiologics such as PRP injections and advanced cellular and peptide therapies. We're happy to talk through your goals together and recommend what's right for you, by consultation only.

Explore FXN Regenerative →

The Second Opinion

Bring your own analysis. Designed for those who have received an online health assessment or similar and been told to "see your doctor." We're happy to help.

Explore Second Opinion →

Choose how you’d like to begin.

Opening in San Diego in January 2027.