Skip to content
Brian K. Fung

Brian K. Fung · PharmD, MPH, CNA

Hi, I’m Brian

A clinician-engineer solving healthcare problems with software.

Vision
Connect the world’s healthcare data.
Mission
Train the next generation of clinician-engineers, through OpenClinTech.
Building
haau3, which tackles the interoperability problems caregivers face, so they can coordinate care more easily.
Brian K. Fung

Experience

Worked across health systems, federal policy and health tech

Full CV
  1. 2025–present

    haau3

    Founder

    Started building it in November 2025 while caregiving full-time. Eight months later, in July 2026, it became one of the first apps in CMS’s new Medicare App Library. It’s free to use.

  2. 2022–2025

    Verily

    Started as Google Life Sciences at X, Google’s moonshot factory

    Staff Clinical Informatics Data Architect

    Appointed to Verily’s FHIR Council, setting company-wide FHIR guidance. Led the semantic modeling of clinical knowledge in FHIR, architecting it with engineering, product and clinical teams.

  3. 2015–2022

    Mayo Clinic

    Clinical Informatics Pharmacist

    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.

  4. 2019–2020

    ONC

    Office of the National Coordinator for Health IT

    Graduate Intern

    Helped draft the e-prescribing sections of ONC’s Cures Act Final Rule and analyzed how the Act could reduce clinician burden. 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).

Education & training

Trained in pharmacy, informatics, public health and data science

  1. 2005–2009 · degree

    Bachelor of Science in Human Nutrition

    University of Florida · Gainesville, FL

  2. 2009–2013 · degree

    Doctor of Pharmacy (PharmD)

    University of Florida · Gainesville, FL

  3. 2013–2014 · residency

    PGY-1 Pharmacy Practice Residency

    Sarasota Memorial Hospital · Sarasota, FL

  4. 2014–2015 · residency

    PGY-2 Pharmacy Informatics Residency

    University of Utah Health · Salt Lake City, UT

  5. 2018–2020 · degree

    Master of Public Health (MPH)

    Johns Hopkins Bloomberg School of Public Health · Baltimore, MD

  6. 2022–2023 · certificate

    Graduate Certificate in Biomedical Data Science

    Stanford University School of Medicine · Stanford, CA

Now building

Software for caregivers, and the data layer under it

All 10 current projects

Latest writing

From the blog

All 37 posts

7 min read

Cheating death

If you knew you only had six months left to live. What would you do with your remaining time you have left? In this article, I want to share my experience of…

11 min read

The best problems to solve are your own

One of the hardest parts of being a caregiver isn’t the care itself. Rather, it’s the coordination and communication involved. As I step into a full-time…

Support

Keep the work independent and free

The vast majority of what I make will always be free. Memberships help me stay independent and reinvest time and resources into building openly.

Become a supporter