Mission-Driven Team

Our Mission

Saving Lives with Precision Diagnostics.

We believe technology will unlock the power of personalized medicine by combining individual diagnostic insights into an ensemble view of your health.



We have assembled a world-class team of medical, technology, and business leaders to redefine personalized medicine from the inside out. With our diagnostic centers of excellence, expertise in medicine, and silicon valley roots, HALO Diagnostics is uniquely positioned to build the new standard in precision diagnostics.

Michael Uhl
Chief Executive Officer

20+ years of leadership in executing $100B+ in tech-based growth transactions with McKinsey.

Dr. John Feller
Chief Medical Officer

Board-certified subspecialized radiologist with fellowship training at Stanford. US Air Force veteran.

Brian Axe
Chief Product Officer

20+ years of digital marketing experience and co-creator of $20B Google AdSense business.

Aram Compeau
Chief Technology Officer

20+ years building out scalable technology platforms, including VMware's Cloud Provider Software $530M Business Unit.

Jeff Gerard

20+ years of strategic growth leadership in the healthcare industry (Former President of Sutter Health Bay Area).

Steven Gatoff
Chief Financial Officer

25+ years driving and scaling growth of tech companies; expertise in corporate finance, capital markets, and M&A (Deloitte, Morgan Stanley, Rapid7).

Kyle Fromm
Chief Compliance Officer

20+ years of healthcare experience concentrating on compliance and privacy program administration.

Bernadette Greenwood
Chief Research Officer

20+ years of product development of breast and prostate imaging and intervention solutions (GE, Invivo/Philips).

Dr. Ara Karamanian
Prostate Program Medical Director

Board-certified in both diagnostic radiology and vascular and interventional radiology. Distinguished Duke Biomedical Engineering graduate.

Dr. Behzad Noorbehesht
HALO Dx Fellow

Board-certified, fellowship-trained (Stanford) radiologist with 30+ years of leading-edge medical imaging with both MD and PhD degrees.

Dr. John R. Mehall
HALO Dx Fellow

Board certified cardiovascular surgeon with 20+ years healthcare leadership experience, researcher and nationally recognized surgeon, and serial entrepreneur with an MBA in healthcare.

Dr. Christopher Hancock
Neuroscience Physician

Board certified neuroradiologist with 20+ years healthcare experience, neuroscience researcher, and MBA in healthcare.

Pat Schoof
VP of HR

20+ years experience as an HR leader with unique a combination of business acumen and HR expertise in high growth organizations (Salesforce, Shutterfly, Udemy).

Steve Haas
Head of Sales, Marketing & Business Development

30+ years of people-focused healthcare leadership (Sharp Healthcare, Alliance Healthcare, AGFA, Pritzker School of Medicine, & Feinberg School of Medicine).

Doug Appleton
General Counsel

20+ years general corporate law experience with major law firms and in-house corporate legal departments for public and private companies.

Chris Emery
Chief Business Officer – Molecular Diagnostics

20+ years of medical diagnostics and precision medicine operational experience (Abbott, Novartis, Johnson & Johnson, LabCorp).

Alexander Kolev
Director of Engineering

19 years experience in software engineering, project and product management, release management and cross-geo coordination.