Hi, I’m Brian

haau3 grew out of caring for my grandma: after a career in healthcare interoperability, I was the one carrying her records between doctors, pharmacies and the nursing home. I started building it in November 2025, and in July 2026 it became one of the first apps in CMS’s new Medicare App Library. It’s free to use.

In March 2025 I took FMLA to be with my grandma after her doctor recommended hospice, and that June I resigned from Verily to care for her full-time. To care for her as well as I could, I trained as a nursing assistant that fall and became a licensed Certified Nursing Assistant in January 2026. She passed away that month. I wrote about our time together in 10.5 months of borrowed time.

Verily started as Google Life Sciences at X, Google’s moonshot factory. I was appointed to its FHIR Council, setting company-wide FHIR guidance, and led the semantic modeling of clinical knowledge in FHIR, architecting it with engineering, product and clinical teams.

Mayo’s $1.5 billion move to Epic took nearly 500 people and was one of the largest, most complex Epic implementations ever. I owned antimicrobial stewardship, converting CBAM, Mayo’s first computerized decision support, built in the 1980s, into Epic from 2015 to 2017 with infectious diseases physicians and pharmacists as subject-matter experts (AMIA 2019); Epic later made its rule deferrals a standard feature. Separately, a team of three of us worked with Mayo’s infection control team to build isolation and prevention alerts and NHSN reporting of hospital-acquired infections into Epic’s Bugsy module, used by Epic customers today.

At the Office of the National Coordinator for Health IT (ONC), I helped draft the e-prescribing sections of the Cures Act Final Rule and analyzed how the Act could reduce clinician burden. I also helped organize ONC’s national symposium on patient matching for prescription drug monitoring programs, where I led the overview session (write-up, with Carmen Smiley).