Why Preemptive exists

Preemptive was built to add an earlier, human-guided foundation beneath modern healthcare.

The problem

Healthcare is designed to intervene too late. It relies on snapshots—annual exams or urgent visits—that miss the slow, compounding changes happening daily. By the time symptoms appear, the opportunity for early correction has often passed.

Our belief

We believe health is continuous, not episodic. But data alone isn't the answer. Interpretation matters. Humans belong in the loop to distinguish between statistical noise and meaningful physiological shifts that require attention.

What makes us different

Preemptive is not an app that graphs steps, nor a clinic replacing your doctor. We are a dedicated layer beneath primary care, providing the structural stability and early signal that the rest of the system lacks.

Built by clinicians, engineers, scientists, and systems thinkers.

Leadership

Jamien McCullum

Jamien McCullum

Founder / CEO

Digital health founder with deep experience in AI-driven healthcare and go-to-market execution. Former VP of Business Development at Optimize Health, helping scale a leading Remote Patient Monitoring platform. Previously built and exited the first HIPAA-secured SMS platform for physician groups. Stanford graduate.

Matt Whitehill, PhD

Matt Whitehill, PhD

Founder / Chief Technology Officer

Applied AI researcher and technologist specializing in sensing, signal processing, and edge computing. PhD in Computer Science from the University of Washington, with prior research at UW and Microsoft Research focused on translating everyday-device signals into predictive health insights.

Jorge Sanchez, MD

Jorge Sanchez, MD

Medical Director

Physician entrepreneur and digital health operator. Former Chief Medical Officer and co-founder of Alertive Healthcare, scaling to 10,000+ patients (exit 2022), then Medical Director at Carbon Health RPM. Deep expertise in population health, remote patient monitoring, and AI-enabled remote care.

Advisors

Leon Gatys, PhD

Leon Gatys, PhD

Co-founder

Founding member of Apple's Health AI Team. Machine Learning, Computational Neuroscience PhD, Invented Neural Style Transfer.

David Maron, MD

David Maron, MD

Medical Advisor

Director of Preventative Cardiology at Stanford; Board certified in internal medicine, cardiovascular disease, clinical lipidology.

Shwetak Patel, PhD

Shwetak Patel, PhD

Advisor

Head of A.I. health @ Google, on-device deep learning expert (McCarthur Genius Award), Principal Investigator Ubiquitous Comp Lab.

Subbu Venkatraman, PhD

Subbu Venkatraman, PhD

Advisor

Head of Digital Health Research @ Samsung. Former CTO Eko Health, Dir. Engineering Fitbit, Qualcomm.

George Ribaroff, MD

George Ribaroff, MD

Board Member

Healthcare venture investor and former physician w/NHS.

Jing MacKenzie, MD

Jing MacKenzie, MD

Medical Advisor

Permanente Group Director, previously Aetna, Philips Healthcare.

Meredith Matthews, MD

Meredith Matthews, MD

Medical Advisor

Chief Medical Officer of Blue Shield of California (retired).

Oren Etzioni, PhD

Oren Etzioni, PhD

Advisor

Former CEO of Paul Allen Institute for AI in Seattle. Madrona Venture Group partner; Technical Director at AI2 Incubator.

Kate McLean, MD

Kate McLean, MD

Medical Advisor

Board certified, OBGYN, Senior dir. Clinical Ro, CMO Quilted Health.

Anthony Watson

Anthony Watson

Advisor

20-year FDA regulatory affairs executive focused on software as a medical device. Pear Therapeutics.

Nirav Shah, MD

Nirav Shah, MD

Medical Advisor

CEO and Founder of Alertive Health, acquired by Carbon Health; Board certified in neurology and stroke medicine.