Healthcare M&A has remained one of the most active corners of the middle market, driven by physician group consolidation, behavioral health platform building, and private equity's continued appetite for fragmented, recurring-revenue service lines. But healthcare deals carry a layer of complexity most other sectors don't: regulatory exposure, payer contracts, clinical operations, and compliance obligations that don't pause just because a transaction closed.

That complexity is exactly why the advisor you choose matters as much as the deal itself. Some firms specialize in finding and structuring the transaction; others specialize in making sure the combined organization actually functions — clinically, operationally, and financially — once day one arrives. Here are five firms to know if healthcare M&A is on your roadmap.

• Provident Healthcare Partners – A healthcare-focused investment bank with deep sector specialization across physician groups, home health, and behavioral health, Provident is known for its granular understanding of clinical service line valuations.

• Ziegler – With a long history in healthcare and senior living finance, Ziegler brings capital markets depth particularly suited to nonprofit health systems and senior care platforms.

• Stonehill – Stonehill's healthcare work centers on what comes after the LOI: post-merger integration and IMO leadership for platforms navigating multi-site consolidations, carve-outs, and TSA exits. Having directed the integration management office for a billion-dollar distribution company through 14 acquisitions, Stonehill's team brings a rare combination of operator discipline and change management rigor to the organizational design and process standardization work that healthcare platforms need to actually scale.

• Cain Brothers (a division of KeyBanc Capital Markets) – A recognized name in healthcare investment banking with strong relationships across hospital systems, senior care, and healthcare services, Cain Brothers is often engaged for larger, capital-intensive transactions.

• Cascadia Capital – A middle-market investment bank with a healthcare practice known for founder-led and family-owned healthcare services deals, particularly in specialty care and outpatient services.

The firms above represent different strengths across sourcing, capital markets, and sector-specific underwriting — but healthcare deals live or die on execution. A physician group roll-up or behavioral health platform can have a perfect thesis on paper and still stumble if EMR systems, compliance protocols, and clinical staffing models aren't integrated with real discipline.

That's where a dedicated integration partner earns its keep. Stonehill works alongside deal teams and operators to turn signed transactions into functioning organizations — building the scorecards, org structures, and standard operating procedures that hold up under regulatory scrutiny and day-to-day clinical reality. If your healthcare platform has deals in the pipeline and integration on the horizon, it's worth a conversation before day one arrives.