Dr. Michael Billington, MD

Concierge Emergency Medicine physician, San Mateo, CA

PrimaryMD

Dr. Billington is Chief Science Officer of PrimaryMD in San Mateo and holds a faculty appointment at Harvard Medical School.

101 S San Mateo Dr, Suite 311, San Mateo, CA 94401

At a glance

Practice model

Membership primary care

Board certification

Emergency Medicine and Critical Care

Care teams

150 members per care team

Telehealth

In person and by telehealth

Facts on this page last checked October 2026. How we check doctors

About Dr. Billington

Dr. Billington is Chief Science Officer of PrimaryMD in San Mateo, California. He is board certified in Emergency Medicine and Critical Care. He holds a faculty appointment at Harvard Medical School.

He is Director of the Emergency Medicine and Critical Care Fellowship at Brigham and Women's Hospital. He is a Deputy Editor of NEJM Journal Watch. His residency training was through the Harvard-Affiliated Emergency Medicine program.

The practice offers care in person and by telehealth.

Membership and fees

The practice offers primary care, prevention, and longevity medicine in one membership.

Membership includes 150 members per care team, 24/7/365 urgent care through Sollis Health, quarterly labs, performance testing and genomics, quarterly physician reviews, whole-genome sequencing, exercise physiology guidance and same-day care when needed.

Education and credentials

Residency

Harvard-Affiliated Emergency Medicine program

Board certification

Emergency Medicine and Critical Care

License

Verify with the Medical Board of California

Hospital and practice affiliations

Chief Science Officer of PrimaryMD

Faculty appointment at Harvard Medical School

Deputy Editor of NEJM Journal Watch

Location

101 S San Mateo Dr, Suite 311, San Mateo, CA 94401

PrimaryMD practice page

Directions

Recognition and research

Publications

Author of "The "July Effect" in the intensive care units revisited: A bi-institutional 6-year experience of 57,160 patients" in World Journal of Emergency Medicine (2022).

Patient reviews

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Questions patients ask

Does Dr. Billington take insurance, or offer a membership?

PrimaryMD offers primary care, prevention, and longevity medicine in one membership. Membership includes 150 members per care team, quarterly labs and physician reviews, whole-genome sequencing, and same-day care when needed.