North American Partners in Anesthesia Announces New Private Equity Partner, American Securities

North American Partners in Anesthesia (NAPA), the largest single specialty anesthesia management company in the United States, and American Securities LLC, a leading middle-market private equity firm, have completed a recapitalization of NAPA’s practice management company, NAPA Management Services Corporation (NMSC).  The transaction adds significant growth capacity to NMSC and will fuel the organization’s ability to actively pursue expansion opportunities and grow its leadership position.

“With American Securities as our new partner, NMSC and NAPA are poised to pursue multiple avenues that will extend our excellent clinical capabilities and business model into new healthcare settings and geographies,” said John Di Capua, M.D., CEO of NMSC. “As our organization celebrates its 30th anniversary and looks to the future, the recapitalization reinforces our value proposition as one of the nation’s leading provider of anesthesia and management services.”

Marc L. Saiontz, Managing Director at American Securities noted, “The Company is well positioned for a bright future with a range of exciting growth options. We are delighted to partner with this talented group of clinicians and the entire NMSC team as they move into in the next phase of their growth and evolution.”

The recapitalization is the second transaction for NMSC since 2011, when it entered into an agreement with Moelis Capital Partners (MCP), a subsidiary of Moelis Asset Management.

“This transaction is the next logical step in NAPA’s growth, as we’ve helped NAPA grow from 22 hospitals and 5 states in 2011 to 81 hospitals in 11 states today,” commented Ted Yun, Managing Partner, NexPhase, and subadviser to MCP. “There remain tremendous growth opportunities for NAPA.  We wish NAPA and American Securities every success in the future.” 

Lloyd Straus, President and Chief Operating Officer of NMSC, added, “Over the last five years, the Moelis/NexPhase team has been an outstanding strategic partner, helping us achieve our mutual business objectives. We appreciate their contributions and look forward to an equally fruitful relationship with American Securities.”

McDermott Will & Emery LLP served as legal counsel to NMSC with respect to the transaction, and Weil, Gotshal & Manges LLP served as legal counsel to American Securities. Moelis & Company LLC and Harris Williams & Co. acted as financial advisors to NMSC with respect to the transaction. Affiliates of Leonard Green & Partners made a minority investment in the transaction along with American Securities and NAPA’s management team.

NAPA Media Contact
Barbara Cerrone, Senior Director of Marketing and Corporate Communications
North American Partners in Anesthesia
P: (516) 945-3394

American Securities Media Contact
Caroline Harris-Gibson
Prosek Partners
212-279-3115 x222

NexPhase Capital Media Contact
Lex Leeming, Partner & Head of Business Development
212 878-6005

About North American Partners in Anesthesia
As a clinician-led organization, North American Partners in Anesthesia (NAPA) is redefining healthcare, delivering unsurpassed excellence to its partners and patients every day. In three decades, NAPA has grown to become the nation’s leading single-specialty anesthesia and perioperative management company, serving more than one million patients annually in more than 200 healthcare facilities throughout the Northeast, Mid-Atlantic, Midwest and Southeast. Our highly skilled teams of clinicians participate in groundbreaking leadership development and customer service training programs to deliver optimal results to patients, surgeons, healthcare administrators and staff. Through our exceptional perioperative leadership, research, innovations and state-of-the-art technologies, NAPA offers real solutions driven by evidence-based outcomes to dramatically accelerate operational efficiencies, increase satisfaction ratings and enhance safety and profitability. For more information, please visit

About American Securities
American Securities is a leading middle-market private equity firm with one of the most consistent track records in the industry of building successful, enduring businesses. We invest in North American based companies with revenues ranging from $500 million to $2 billion and currently have more than $13 billion under management.

About NexPhase Capital
NexPhase Capital (NexPhase), formed by the former principals of Moelis Capital Partners, the private equity division of Moelis Asset Management (MAM), is a New York-based private equity firm that targets equity investments between $25 and $75 million in leading middle market, growth-oriented companies. Earlier this year, the former principals of MCP formed NexPhase to execute, on an independent basis, the same sector-focused strategy of controlled investments in lower middle market companies they had successfully executed at MCP.  NexPhase continues to manage the MCP funds and portfolio companies under a sub-advisory agreement. NexPhase specializes in the healthcare, industrial services, software and consumer sectors. Led by Co-Managing Partners Kurt Larsen and Ted Yun, the firm will continue to manage approximately $872 million of MCP’s legacy private equity capital. For more information, please visit


About Us

Founded in 1986 by the anesthesia group from Long Island’s North Shore University Hospital, North American Partners in Anesthesia (NAPA) is now the leading specialty anesthesia management company in the United States. Our basic charter is simple. NAPA partners with hospitals, ambulatory surgical centers and physician offices to provide anesthesia services and perioperative leadership that enhance operating room performance, revenue, and patient and surgeon satisfaction. Our ability to consistently deliver on this partnership model has created NAPA’s stellar reputation nationwide.