Your Doctor, In Time.
Dr. Brian Juan MD, FAAFP
A Primary Care Doctor in Longmont, Colorado
Dr. Juan is a board-certified family physician and founder of Metronome Family Medicine, a Direct Primary Care practice in Longmont serving patients throughout Boulder and Weld Counties who are seeking a primary care doctor in Longmont with continuity and depth.
He built his practice around a simple belief: medicine works best when physician and patient have the time and space to think clearly together.
His work has always centered on relationship-driven, evidence-based primary care — caring for individuals and families across seasons of life, from prevention to complex metabolic and hormonal transitions.
He trained at the University of Colorado School of Medicine and completed residency at Southern Colorado Family Medicine before spending nearly a decade practicing outpatient family medicine along the Front Range.
Board-certified in Family Medicine, he maintains a steady commitment to clinical rigor, continuing education, and thoughtful, systems-based care.
A Different Way to Practice Medicine
Over time, Dr. Juan recognized the constraints of high-volume systems: shorter visits, longer waits, and limited opportunity for comprehensive oversight.
The science of medicine remains strong.
The structure surrounding it often limits its full expression.
He believes effective primary care requires more than protocols and algorithms. It requires judgment. It requires continuity. It requires listening carefully enough to recognize patterns over time.
Time builds relationship.
Relationship builds understanding.
Understanding improves decision-making.
Direct Primary Care provides the structure that allows him to practice with depth, longitudinal oversight, and clinical accountability.
Continued Growth and Clinical Curiosity
Dr. Juan’s own experience of midlife has informed his clinical perspective.
As metabolism shifts and recovery evolves, broader questions of longevity, resilience, and sustainable performance naturally emerge. In his view, primary care should extend beyond disease management to support long-term strength and functional capacity.
This interest has expanded his ongoing education into systems-based and integrative approaches, with focused study in metabolic flexibility, hormone physiology, cardiometabolic risk reduction, and health span preservation.
This exploration does not replace evidence-based medicine — it builds upon it.
He remains grounded in the science of medicine, evaluating emerging research thoughtfully and applying what is well-supported within comprehensive primary care.
For many patients navigating similar stages of life, this shared experience fosters an added layer of understanding.
Curiosity, guided by evidence and experience, is what allows medicine to evolve responsibly.
Music and Medicine
Before his medical career, Dr. Juan was an internationally touring musician. He has written, recorded, and released original music for decades and has performed extensively throughout Colorado and beyond, including more than 20 years performing and recording with Otis Taylor.
The discipline of performance and the necessity of attentive listening shape the way he approaches patient care.
Rhythm matters.
Timing matters.
Listening is everything.
In both music and medicine, precision and adaptability must coexist.
Professional Roles & Community
Dr. Juan serves as Clinical Faculty at the University of Colorado School of Medicine.
He is a recipient of the Golden Stethoscope Award for excellence in medical education and previously served on the board of directors for the Colorado Academy of Family Physicians.
He lives in Longmont with his wife and children.
Primary care, at its best, is built over years — not transactions. As a primary care doctor in Longmont, Dr. Juan values long-term physician–patient relationships and practices with the intention of caring for individuals and families across decades.
His goal is simple:
To provide the kind of comprehensive, thoughtful primary care he would want for his own family — and to practice in a way that remains steady, rigorous, and dependable over time.
