People who operate.
The team is small by design: operators, directors, advisors, and co-founders who have built and run real businesses, not pure technologists who haven't.
Operating leadership
Day-to-dayMichael Rome
Leads business development and corporate relationship management, anchoring the studio's relationships with large enterprises and Fortune 500 partners.
LinkedInPhillip Phan, MD
Physician and Senior Director. Drives healthcare and clinical-AI strategy and helps lead product development across the active portfolio.
LinkedInJohn Marchesini
Chief AI Architect. Sets the technical direction of the platform layer shared by every product, and reviews the engineering practice behind what ships.
Marian Zaki, PhD
The studio's cybersecurity expert and lead security architect. Marian shapes the threat model and security architecture behind our platforms, and the systems that let regulated buyers trust them.
LinkedInGreggory Keiffer, PhD
Brings senior strategic and technical counsel across the studio's operations and business development.
LinkedInAdvisory co-chairs
CounselAnshu Shrivastava, PhD
Provides strategic counsel on research direction, scientific partnerships, and the studio's positioning within the Texas Medical Center ecosystem. Anchors the bridge between academic science and applied AI engineering.
LinkedInMark Czubachowski
Founder of MCZ Align, a retained executive search firm specializing in C-suite placements for venture-backed healthcare and senior leadership for PE-backed healthcare technology. Publisher of Align Health Insights.
LinkedInCo-founders
Original buildIan Phan
Original architect of BillXM. Brings the engineering instinct and willingness to ship that defines how the studio prototypes new platforms.
Grayson Phan
Original architect of Vigilarx. Focuses on product surface and user experience across the portfolio's institutional platforms.
Managing directors
Legal · CapitalMarty Hill, JD
Trial attorney and partner at Pagel, Davis & Hill. Anchors the studio's legal-tech vertical, including the BillXM enterprise relationship serving personal-injury defense practices.
Jonathan Ramirez
Managing Director at Celesium Capital. Leads operations and capital structure across CelesiumAI and the broader Celesium platform.
The structure.
CelesiumAI LLC is a Texas company headquartered in Houston, incubated under and operated alongside Celesium Capital.
Form
CelesiumAI LLC
A single Texas limited liability company at 6222 Richmond, Ste 170, Houston, TX 77057. Every platform in the portfolio is a product of that one company, each with its own site and its own separate database.
Parent
Operated under Celesium Capital
CelesiumAI is the technology arm of Celesium Capital, a Houston private equity firm focused on healthcare, technology, and real estate. The platform provides governance, capital, and institutional relationships.
Where
Houston · Texas Medical Center
We work in proximity to the largest medical complex in the world. Active collaborations with faculty at Baylor College of Medicine, Rice University, MD Anderson, and the Texas Medical Center inform every healthcare and research-security platform we build.
We don't grow the team to grow the team. We add operators when the work demands them.On hiring posture
Small by design. Deep where it counts.
Tell us the one decision costing your team the most, and we'll show you the platform for it.