The physicians

Three physicians. Capped panels.

Each physician sees no more than 380 members — by policy. Atrium is owned by the physicians who practice here. No private equity, no roll-up, no investor pressure to grow the panels.

Atrium physician with a member
Founding physician

Dr. Eleanor Voss

Internal medicine · founding physician. Stanford School of Medicine, UCSF Internal Medicine residency, ABIM Cardiovascular + Internal Medicine.

Dr. Voss left a top-decile primary-care role at UCSF in 2018 to build a practice where she could spend the time medicine actually requires. Specialties: cardiometabolic, women’s health, perimenopause.

Currently accepting · 4 spots open · English, Mandarin, Cantonese

Meet & greet with Dr. Voss
Dr. Eleanor Voss
Internal medicine + sports

Dr. Marcus Chen

Internal medicine + sports performance. Johns Hopkins MD, Stanford MS in Exercise Physiology, Brigham + Women’s residency, Stanford Sports Medicine fellowship.

Bay Area runners and former pro athletes make up about a third of his panel. Specialties: cardiometabolic, sleep medicine, endurance training.

Currently accepting · 7 spots open

Meet & greet with Dr. Chen
Dr. Marcus Chen
Family medicine + pediatrics

Dr. Janelle Okafor

Family medicine across the lifespan — newborns through adults. Penn MD, UCSF Family Medicine + Pediatrics residency. The only physician on staff who carries pediatric patients.

Primary care for most of our family-tier members. Specialties: pediatric primary care, adolescent medicine, family planning, women’s health.

Waitlist · expected Q3 2026 · English, Spanish, Yoruba

Join Dr. Okafor's waitlist
Dr. Janelle Okafor

Each physician is supported by a registered nurse care coordinator, a registered dietitian, and a behavioral-health liaison.

Begin with a conversation.

A 30-minute meet & greet — free, no obligation. Tell us which physician you’d prefer to start with, or let us match you.

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