Mike McNelis knows the business from the inside

A founder’s business card can stay remarkably still while the business beneath it changes completely. Mike McNelis has experienced the reverse as well: a new title atop an enterprise he already knew. A co-founder of Centauri Health Solutions, formerly its president, he became chief executive as Adam Miller moved into the executive chairman’s role. The succession placed an existing builder in charge of the next stretch of building.

There is a certain economy to that arrangement. The incoming CEO had already worked inside the organization. The outgoing CEO remained involved. Miller’s new brief included business development, regulatory activities, and governance. Responsibilities changed hands without requiring the founding story to begin again. For a company more than a decade into its life, continuity had become an operating choice.

The interesting question about McNelis is what that continuity contains. His career has crossed consulting, corporate product development, information technology, and company formation. At Centauri, the story now includes acquisitions, outside capital, and the practical business of keeping customers. It is a career best read through the work between the titles.

An engineer’s education, a consultant’s range

McNelis holds an engineering bachelor’s degree from Dartmouth and a computer science master’s from the University of Chicago. His earlier consulting employers included The Parthenon Group and Diamond Technology Partners. The assignments crossed consumer products, telecommunications, business information, and publishing, with corporate strategy and technology meeting in the same brief.

That combination gives his subsequent career a useful frame: commercial decisions and technical implementation belong in the same conversation. A strategy still needs something that can be built, delivered, and supported. A piece of software still needs a reason for a customer to buy it. The two disciplines have plenty to discuss, provided neither insists on speaking exclusively in acronyms.

At CVS Caremark, his responsibilities included product development, operations, client service, project management, and IT. His final executive position there was vice president of product innovation and business development. The breadth matters more than the length of the title: these are different vantage points on how an organization turns an idea into a working service.

The capital arrived with a job to do

Centauri was founded in 2014. By May 2016, Silversmith Capital Partners had acquired a significant minority interest and committed $50 million to support its growth. The stated uses included product development, acquisitions, recruiting, infrastructure, and expansion of the company’s platform. The money had an itinerary.

For McNelis, a co-founder, this was part of the company’s transition from launch to expansion. An enterprise receiving growth capital must make room for more people, more products, and more expectations. The founding idea acquires a calendar, a budget, and several departments that would like an answer by Friday.

The 2016 commitment also establishes how early acquisitions and internal development sat together in Centauri’s plans. Buying capabilities and building them were both on the agenda. That history helps explain the business McNelis would eventually lead: an organization assembled over time, with investment supporting several kinds of growth rather than one isolated product launch.

A promotion with the doors already open

When Miller publicly welcomed McNelis into the CEO role, he identified his successor as both a co-founder and the previous president. Centauri’s own announcement emphasized McNelis’s familiarity with its market, lines of business, and client value. The rationale for the appointment was specific: he understood what the company did and why its customers paid for it.

Miller’s continued presence as executive chairman created a second point of continuity. A founder handing over day-to-day leadership can remain useful through relationships and oversight. Here, the division of responsibilities was spelled out rather than left as a ceremonial title. The two leaders were moving into different jobs within the same enterprise.

Read as a succession story, the episode is refreshingly practical. An established company chose someone who had helped make it. That does not settle every question a CEO will face. It does, however, give the appointment a basis in shared work, institutional knowledge, and an existing relationship between the person taking responsibility and the person passing it on.

Trust has an administrative side

In January 2024, while McNelis was president, Centauri announced information security certifications covering several application platforms. Two applications had earned their first HITRUST certifications, while others renewed theirs. His accompanying remarks concentrated on the obligation created when clients entrust a supplier with sensitive, essential information.

This is a less glamorous part of product leadership, which is one reason it deserves attention. Customers buy a service, but they also inherit a relationship with its controls, support processes, and ability to keep promises. A certification announcement concerns the machinery behind those promises. It describes work that is easy to overlook until someone asks whether it has been done.

A few months later, Secure Exchange Solutions, a Centauri company, joined the MEDITECH Alliance Collaborator Program. It already served more than 100 MEDITECH clients. McNelis, still identified as president in that announcement, discussed the established partnership and access to future enhancements. The emphasis was on making a working commercial relationship easier to extend.

Growth, with other people in the sentence

Centauri’s December 2024 announcement of Arizona Corporate Excellence recognition put McNelis in front of another familiar executive task: accepting an award on behalf of a company. It had appeared on both the Top Private Company and Fastest Growing Company lists. The celebration took place at Warehouse215 in downtown Phoenix.

McNelis credited the team and emphasized sustained growth. The release described year-over-year growth across the company’s first ten years. There were two distinct ideas in that moment: recognition for the size and progress of the enterprise, and an acknowledgment that the enterprise was the work of many people. A co-founder can claim a beginning; an operating company requires continuing contributions.

The award also gives the succession its setting. McNelis was taking responsibility for a business with an established record, not a blank sheet. Customers, colleagues, investors, and previous decisions were already in the room. The CEO’s task would include carrying that history forward while deciding which parts of the organization needed to change.

“Connection isn't a metaphor for us. It's how we create value - every day.”

Mike McNelis · Co-founder and CEO

The deal is only the beginning

In April 2025, Centauri acquired MedAllies. Abry Partners supported the transaction alongside Silversmith Capital Partners and SV Health Investors. McNelis’s comments focused on how the acquired network and Centauri’s existing technology could work together to create value for clients. The business logic was combination: additional capabilities joining an existing platform.

The following year brought another acquisition, Benny, announced in September 2026. Its technology uses conversational digital intake in place of long static application forms. The release described the intended administrative benefits: better application quality and less processing burden. McNelis emphasized pairing technology with an experienced team.

These transactions suggest a useful way to read his present role. The purchase announcement establishes ownership. The harder commercial question concerns what the combination lets the organization do next. Integration, usability, and people become part of the same assignment. A deal has a closing date; making the acquired business fit is work with a much less obliging clock.

A longer horizon, a daily test

June 2026 brought a new capital chapter. Abry closed a $780 million continuation vehicle for Centauri, co-led by funds managed by Neuberger Private Markets and Apollo S3. The arrangement offered existing investors optional liquidity and committed additional capital for growth. It extended a partnership that began with Abry’s investment in February 2020.

The financing also followed a change in the shape of the company. Centauri divested its Provider Solutions segment in early 2026. Expansion and focus were happening in the same business: acquisitions brought capabilities in, while a divestiture moved a segment out. For its chief executive, the portfolio was something to manage as well as something to grow. A longer investment horizon still leaves room for choosing a narrower set of priorities.

The figure describes the vehicle. Within that announcement, the corporate progress was also concrete: Centauri’s payer business had tripled revenue and more than quadrupled EBITDA since Abry’s investment. Those were business-level results over a multiyear period. McNelis spoke about continuing the investor relationship and working with the new participants.

A month later, he offered a smaller, sharper test of progress: “A pledge is easy to make; sustained, real-world adoption is hard to earn.” The remark accompanied a July 2026 update on MedAllies. It places repeat use and reliable infrastructure alongside the larger financial story. A capital transaction can extend a company’s horizon. Users decide, repeatedly, whether its technology deserves their time.

The partnership announcements show a similar progression at the product level. In May 2024, Secure Exchange Solutions joined the MEDITECH Alliance as a Collaborator. By September 2026, Centauri Direct combined functionality from that business and MedAllies Direct. Separate acquired capabilities were appearing together in one offering. The same announcement recorded Collaborator status for Centauri Notify, with established integration and support standards. These are specific milestones in an ongoing relationship, each concerning what a customer can deploy and what support it can expect afterward.

September added another marker: Centauri Direct earned Innovator status in the MEDITECH Alliance Program, following a review covering technical, operational, security, and customer success disciplines. For McNelis, the next chapter is already taking place in such particulars. The title on the business card has changed. The work still arrives as products to improve, relationships to maintain, and systems that must function tomorrow morning.