The People

Founders With Clinical
Skin in the Game

Every Pegasi founder spent years inside oncology departments before writing a line of code. That context shapes every product decision we make.

Luis Santiago

Luis Santiago

CEO & Chief Medical Officer

Former attending oncologist at MD Anderson Cancer Center. Led a 7-year study on multi-modal early detection of colorectal cancer. Published 14 peer-reviewed papers on FHIR-based clinical data interoperability. Co-inventor of Pegasi's core diagnostic fusion patent.

Dr. Marcus Osei

Dr. Marcus Osei

CTO & Head of Data Science

Previously Principal Research Scientist at IBM Health. PhD in Biomedical Informatics from Johns Hopkins. Designed the Pegasi knowledge graph architecture and the continuous model retraining pipeline that processes 1,200 new cases per day.

James Whitfield

James Whitfield

COO & Head of Clinical Partnerships

Former VP of Health System Partnerships at Veracyte. Managed the operational launch of Pegasi's first three hospital deployments and built the clinical implementation methodology used across all 12 partner sites.

How We Work

Clinical Evidence First

Every model update requires a retrospective validation against at least 1,000 de-identified cases before it touches production. We do not ship based on benchmark scores alone.

Privacy by Architecture

PHI never leaves your institution's environment. Pegasi's federated model means we improve on your data without seeing your data. SOC 2 Type II audited annually.

Direct Clinician Feedback

Our product team runs monthly working sessions with oncologists at partner sites. Alert fatigue, false-positive rates, and workflow friction are tracked as rigorously as model performance.

18
Team Members
6
Published Patents
4
MD/PhD Researchers
3
Open Roles

Join the Mission

We are hiring oncology data scientists, clinical integration engineers, and a head of regulatory affairs. If you want your work to matter in a patient's chart, not just a benchmark leaderboard, talk to us.

View Open Roles