Medical Director
Dr. A. Marsden
MD, Internal Medicine
Leads Atherion's clinical program with a focus on longevity, cardiometabolic health, and physician-guided protocols.
Team
Physicians who know your name.
Continuity of care is foundational at Atherion. You are matched with a physician and a small clinical team that stay with you.
Longevity Physician
Dr. R. Castellan
MD, MPH
Specializes in healthspan medicine, advanced biomarkers, and individualized longevity planning.
Performance Lead
K. Halden
DPT, CSCS
Directs the recovery and performance program. Background with professional athletes and special operations.
Aesthetic Clinician
S. Verrier, NP
MSN, NP-C
Restrained, natural aesthetic medicine. Trained extensively in neuromodulators, biostimulators, and regenerative skin therapies.
Hormone Specialist
Dr. M. Inoue
MD, Endocrinology
Hormone optimization for men and women across life stages, with deep expertise in perimenopause and andropause.
Concierge Lead
J. Whittaker
Patient Experience
Orchestrates every patient journey at Atherion — from booking to follow-up — with discretion and care.