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Strategic Advisor·PPM Roll-Ups

Dr. Matthew Haddad

Founder and Co-CEO at Specialty1 Partners

Houston, Texas, USA

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Why they matter

Founder-operator who built a DSO-style dental surgical rollup from a single practice to 200+ locations under institutional PE sponsorship, with direct insight into physician practice consolidation economics.

Background

Dr. Matthew Haddad is a practicing endodontist who founded and grew Gulf Coast Endodontics to four locations across greater Houston before co-founding Endo1 Partners in 2019 to give endodontists shared back-office and growth support. He and his co-founders evolved that platform into Specialty1 Partners, now the largest doctor-led partnership group spanning endodontics, oral surgery, and periodontics, where he serves as Founder and Co-CEO.

Notable deals

  • 2019
    VSS (Veronis Suhler Stevenson) made a significant growth investment to recapitalize Endo1 Partners, the platform Haddad co-founded, to fund acquisitions in the fragmented endodontics market
  • 2021
    Led Endo1 Partners' evolution into parent company Specialty1 Partners, launching sister brands OS1 Partners (oral surgery) and Perio1 Partners (periodontics)
  • 2026
    Announced Specialty1 Partners' multi-specialty joint venture combining Northeastern Endodontic Specialists with Tuscarawas Oral Surgery and Implant Center

Call-prep brief

Background

  • Practicing endodontist (D.M.D., Case Western Reserve; endodontic residency at Boston University Goldman School of Dental Medicine)
  • Founded and scaled Gulf Coast Endodontics to 4 Houston-area locations before entering the DSO/partnership-org space
  • Co-founded Endo1 Partners (2019) with VSS Capital Partners backing; evolved it into Specialty1 Partners (2021), now spanning endodontics, oral surgery, and periodontics with 350+ specialists across 200+ locations in 27 states

Current Focus

  • Co-CEO overseeing growth strategy, de novo partnerships, and joint-venture structures that let practices expand into adjacent specialties while retaining clinical/doctor control
  • Platform now jointly sponsored by Centerbridge Partners and VSS Capital Partners, with a $525M senior secured credit facility (2025) funding continued M&A

What He Cares About

  • Preserving "doctor-controlled, doctor-led" governance as the platform scales — a recurring theme in his public statements
  • Multi-specialty bundling (endo + oral surgery + perio) as the next growth vector beyond single-specialty rollups

Potential Sensitivities

  • As a co-founder still practicing clinically, he may be protective of physician autonomy messaging — avoid framing questions as pure financial engineering
  • Platform has changed sponsors/ownership structure multiple times (VSS → VSS + Centerbridge); be sensitive about current cap table specifics, which aren't fully public

Questions to Ask

  1. How do you structure equity rollover and governance to keep specialists "doctor-led" as outside sponsors like Centerbridge scale up ownership?
  2. What underwriting criteria do you use when deciding whether a practice is a fit for a single-specialty vs. multi-specialty joint venture?
  3. With the $525M credit facility in place, what's the near-term pace and geographic focus for new partnerships?

Outreach draft

Subject
Insights on physician practice rollup economics
Dr. Haddad, I'm reaching out on behalf of a private equity team studying consolidation models in physician and dental specialty practices. Your work building Endo1 Partners into Specialty1 Partners — scaling from a single practice into a 200+ location, multi-specialty platform under institutional sponsorship — is a model we'd value your perspective on. We're particularly interested in how you've balanced doctor-led governance with outside capital as the platform has grown, and how you evaluate practices for multi-specialty joint ventures. Would you be open to a 30-minute call in the coming weeks? Happy to work around your schedule. Best, [Placeholder Name]

Linked companies

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