Miguel A. Núñez, MD

Miguel A. Núñez, MD, MBA, NACD.DC

Physician Executive  |  Board Chairman  |  NACD Directorship Certified

Healthcare board chairman and former CEO who brings a practicing physician's judgment to the board's core work: overseeing strategy and management, financial reporting and risk, and the quality of care a company delivers.

About

Board leadership and financial oversight. I have chaired the boards of three private healthcare companies: Green Cross Health Systems (1994–2010), Salubris Health (2020–2025), and Sapien Care (since 2025). At Green Cross, as chairman and CEO, I oversaw the CFO, engaged external auditors, and approved audited financial statements. At Salubris I oversaw the CFO and external audit as CEO and kept board-level oversight of financial reporting as chairman. I prepared deliberately for public-company service through NACD Directorship Certification and Harvard Business School director education.

Strategy and enterprise risk. As founder and CEO of Salubris, a Medicaid health plan in Miami-Dade, I led the company through Florida's 2014 shift to statewide managed care. I sold its network assets to a larger regional healthcare organization and stayed on as CEO of the successor MSO. There I integrated about 40 pediatricians and negotiated a global-risk contract with Humana, reaching more than 80 providers and 30,000 covered lives. At Green Cross, a three-site behavioral health provider, I sustained operations through one regulatory cycle and led an orderly wind-down in the next.

Clinical quality and technology accountability. I practice primary care in Coral Gables and use AI in daily patient care. I led Green Cross to Joint Commission accreditation and drafted Sapien Care's Board Charter and AI Governance Charter. I am especially interested in the ethical and human consequences of technology in healthcare.

Board service & scale

3private healthcare company boards chaired
30,000+covered lives, Salubris Health (under my leadership)
80+providers in the network
~$120Mpremiums under management

What I Bring to a Board

Board leadership and financial oversight

Three private healthcare company boards chaired. Oversight of the CFO, external auditors, and audited financial statements.

Holding management accountable for performance, reporting, and controls.

Strategy and enterprise risk

Partner, adapt, or exit: led a Medicaid health plan through a market transition and a behavioral health provider through two regulatory cycles.

Judging when to invest, partner, change direction, or exit, and what each means for patients, physicians, and staff.

Clinical quality and technology accountability

A practicing physician who uses AI in patient care every day, FAA Senior Aviation Medical Examiner, and commercial pilot.

Examining how technology and organizational decisions affect care, accountability, and people.

Board contributions

Quality & ComplianceClinical quality, Medicare and Medicaid programs, accreditation Risk & TechnologyEnterprise and cyber risk, clinical use of AI Nominating & GovernanceFounder-to-chair transition, board structure AuditOversight of the CFO, external auditors, and audited financial statements (Green Cross, Salubris)

Leadership

Sapien Care

Founder & Chairman of the Board2025 – Present
  • Early-stage, AI-enabled preventive care company (pre-launch)
  • Led conversion to a Delaware corporation (October 2026) and established board governance, including bylaws, D&O indemnification, and conflict and related-party oversight
  • Drafted Board Charter and AI Governance Charter
  • Inventor of a patent-pending preventive-health intervention system

Salubris / SAL Health Group (Salubris Health)

Founder & CEO · Chairman of the BoardCEO 2010 – 2020 · Chairman 2020 – December 2025
  • Founded a Medicaid health plan (capitated provider service network) in Miami-Dade
  • Sold network assets to a larger regional healthcare organization in 2014; led the successor MSO
  • Integrated about 40 pediatricians; negotiated a Humana global-risk contract
  • 80+ providers, 30,000+ covered lives, ~$120M in premiums under management

Green Cross Health Systems

Founder, CEO & Chairman1994 – 2010
  • Behavioral health provider: partial hospitalization and outpatient care
  • Grew from one site to three in Miami-Dade and Broward; about 30 staff
  • Medicare certification and Joint Commission accreditation
  • Oversaw CFO and external auditors; led an orderly wind-down in 2010
"Before a board commits, I want to know where the nearest airport is: the options to mitigate, continue, grow, or exit, and what each would cost patients, physicians, and staff."
— Miguel A. Núñez

Thought Leadership

NACD Directorship

"What Directors Should Know About International Board Service"

November 2025

Read the article

NACD Directors Summit

"When AI Enters the Exam Room: The Governance Gap Boards Aren't Ready For"

October 2026

A physician's view of where accountability for clinical AI sits, and what boards should ask.

Newsletter

The Health Boardroom Brief

LinkedIn newsletter · 60+ editions

Healthcare governance and board oversight: payer economics, physician networks, regulatory change, and clinical AI.

Read the newsletter

Credentials & Education

NACDDirectorship Certified (NACD.DC)
Harvard Business SchoolCorporate Director Certificate; Advanced Corporate Director Seminar
RiskCOSO ERM; NACD Cyber-Risk Oversight; NACD Generative AI Tools for Directors
EducationMD, Georgetown University · MBA, University of Tennessee · BS (Honors), University of Miami
Academic appointmentVoluntary Assistant Professor, University of Miami Miller School of Medicine
AviationFAA Senior Aviation Medical Examiner; commercial pilot certificate, multiengine and instrument

Contact

I welcome conversations about public-company board opportunities in healthcare services, particularly where payer–provider economics, physician integration, and regulatory change are central to the strategy.

Miguel@MANunez.com

Miami, Florida · English & Spanish

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