Executive Team

Founders

  • Jeff Hanson
    Jeff Hanson
    Executive Chairman
  • Danny Prosky
    Danny Prosky
    President & CEO
  • Mathieu Streiff
    Mathieu Streiff
    Chief Operating Officer

Executive Team

  • Brian Peay
    Brian Peay
    EVP & Chief Financial Officer
  • Gabe Wilhite
    Gabe Wilhite
    EVP & General Counsel
  • Stefan Oh
    Stefan Oh
    EVP, Acquisitions
  • Kenny Lin
    Kenny Lin
    EVP, Accounting & Finance
  • Wendie Newman
    Wendie Newman
    EVP, Asset Management
  • Ray Oborn
    Ray Oborn
    EVP, Asset Management
  • Cora Lo
    Cora Lo
    SVP & Assistant General Counsel
  • Charlynn Diapo
    Charlynn Diapo
    SVP, Accounting & Finance
Jeff Hanson
Executive Chairman

Jeff Hanson is the executive chairman of American Healthcare REIT, a diverse healthcare-focused real estate investment trust that owns a portfolio of medical office buildings, skilled nursing facilities and senior housing communities totaling approximately $4.2 billion in gross investment value. He previously served as chairman and chief executive officer of Griffin-American Healthcare REIT III and Griffin-American Healthcare REIT IV, as well as one of the founding principals of American Healthcare Investors.

American Healthcare REIT was formed of the merger between the two Griffin-American Healthcare REITs and the acquisition of American Healthcare Investors, which had been the largest privately held healthcare real estate investment firm globally.

Hanson also served as chairman and CEO of the firm’s prior REIT, Griffin-American Healthcare REIT II, which built a portfolio of international healthcare real estate valued at approximately $3 billion. Griffin-American Healthcare REIT II was sold in December 2014 to NorthStar Realty Finance (NYSE: NRF), now Colony Capital (NYSE: CLNY), in a transaction valued at $4 billion.

Prior to founding American Healthcare Investors, Hanson served as one of five executive officers of Grubb & Ellis Company (NYSE: GBE). In this role, he operated in a dual-capacity as CEO of the firm’s investment management subsidiary, Grubb & Ellis Equity Advisors, and as chairman and CEO of Grubb & Ellis Healthcare REIT II (later renamed Griffin-American Healthcare REIT II). He led this 600-employee national investment management platform, comprised of public non-traded REITs, institutional joint ventures, separate accounts, and private syndications, from 2006 to the point at which American Healthcare Investors was founded to absorb Grubb & Ellis’ healthcare REIT business.

Hanson earned a Bachelor of Science in business administration with a dual emphasis in corporate and real estate finance from the University of Southern California. He currently resides in Laguna Hills with his wife and four children.

Current Board Roles

Previous Board Roles

Danny Prosky
President & CEO

Danny Prosky serve as the president and chief executive officer of American Healthcare REIT, Inc., as well as a member of its board of directors. He previously served as the president, chief operating officer and director of Griffin-American Healthcare REIT III and Griffin-American Healthcare REIT IV, and was a founder of American Healthcare Investors (“AHI”), the sponsor of both REITs.

American Healthcare REIT was formed of the merger between the two Griffin-American Healthcare REITs and the acquisition of AHI, which was the largest privately held healthcare real estate investment firm globally prior to the tri-party transaction that was consummated in October 2021.

Prosky previously served as president and chief operating officer of Griffin-American Healthcare REIT II, which merged in December 2014 with NorthStar Realty Finance Corp. (NYSE: NRF), now known as DigitalBridge (NYSE: DBRG) in a transaction valued at approximately $4 billion.

Prosky has spent more than 25 years of his professional career in the specialized field of healthcare real estate investment, where he has been responsible for more than $10 billion in transactions.

Prior to launching Griffin-American Healthcare REIT II in 2009 (then known as Grubb & Ellis Healthcare REIT II), Prosky served as executive vice president of Grubb & Ellis’ first healthcare REIT, now known as Healthcare Trust of America (NYSE: HTA), directly overseeing more than $1.5 billion in acquisitions for the company.

Previously, Prosky served in a variety of senior positions for 14 years with two publicly traded healthcare REITs, American Health Properties and HCP, now known as Healthpeak Properties (NYSE: PEAK), which acquired American Health Properties in 1999.

Prosky received a bachelor’s degree from the University of Colorado and a master’s degree from Boston University. In October 2013, he was recognized as one of 16 “pioneers of healthcare real estate” by Real Estate Forum magazine.

Mathieu Streiff
Chief Operating Officer

Mathieu Streiff is the chief operating officer and member of the board of directors of American Healthcare REIT, a diversified healthcare real estate investment trust that owns a portfolio of medical office buildings, skilled nursing facilities and senior housing communities totaling approximately $4.2 billion in gross investment value. He previously served as general counsel of Griffin-American Healthcare REIT III and Griffin-American Healthcare REIT IV and was a founder of American Healthcare Investors (“AHI”), the sponsor of both REITs.

American Healthcare REIT was formed in the merger between the two Griffin-American Healthcare REITs and the acquisition of AHI, which was one of the largest privately held healthcare real estate investment firms globally prior to the tri-party transaction that was consummated in October 2021.

Streiff served as general counsel of Griffin-American Healthcare REIT II prior to its $4 billion merger with NorthStar Realty Finance Corp. (NYSE: NRF), now known as DigitalBridge (NYSE: DBRG), in December 2014.

Prior to co-founding American Healthcare Investors in 2012, Streiff served as executive vice president and general counsel of Grubb & Ellis Company, where he oversaw all legal matters for the company, including its investment management and real estate services operations globally.

Previously, Streiff served in the real estate department of Latham & Watkins LLP in New York, where he represented principals, developers and lenders in negotiating and structuring commercial real estate transactions.

Streiff earned a bachelor’s in environmental economics and policy from the University of California, Berkeley and a juris doctorate from Columbia University. He is a member of the New York bar.

Brian Peay
EVP & Chief Financial Officer

Brian Peay serves as executive vice president and chief financial officer of American Healthcare REIT. He previously served in the same capacity with American Healthcare Investors, LLC, Griffin-American Healthcare REIT III and Griffin-American Healthcare REIT IV. The merger of those REITs and the business and operations of American Healthcare Investors formed American Healthcare REIT in October 2021. He oversees all financial matters on behalf of the company, leading a team of approximately 70 experienced accounting professionals, all of whom have specialized experience in healthcare-related commercial real estate investment.

Peay previously served as the chief financial officer of Veritas Investments, Inc., a private real estate investment management company with more than $2 billion of assets under management. Prior to joining Veritas, Peay served in a series of management positions with Glenborough, LLC, a formerly New York Stock Exchange-listed REIT, ultimately as executive vice president and chief financial officer. During his 15-year career with Glenborough, Peay was a member of a four-person executive management committee responsible for the strategic direction of the company, including the raising of approximately $450 million in common stock offerings and another $300 million in a convertible preferred stock issuance, as well as $2.5 billion in new and replacement acquisition financing. He also played an integral role in the sale of the formerly publicly traded real estate investment trust to Morgan Stanley Real Estate Fund. The sale resulted in a compounded annual total return in excess of 16 percent, or more than 5,000 basis points higher than the corresponding REIT index during the same 11-year period during which Glenborough was a public company.Peay began his professional career in 1988 as a manager with accounting firm Kenneth Leventhal & Company, which merged with Ernst & Young in 1995.

He received a bachelor’s degree in business economics from the University of California, Santa Barbara and earned a CPA designation from the state of California, which is currently inactive..

Gabe Wilhite
EVP & General Counsel

Gabe Wilhite is the executive vice president and general counsel for American Healthcare REIT, Inc. He previously served in the same capacity with American Healthcare Investors, LLC, as well as assistant general counsel — transactions for Griffin-American Healthcare REIT III and Griffin-American Healthcare REIT IV.  The merger of those REITs and the business and operations of American Healthcare Investors formed American Healthcare REIT in October 2021.

He previously served as American Healthcare Investors’ senior vice president, assistant general counsel — transactions upon joining the firm in April 2016. Prior to joining American Healthcare Investors, from November 2012 until April 2016, Willhite served as legal counsel for Sabal Financial Group, L.P., a real estate and finance company based in Newport Beach, California which was a subsidiary of Oaktree Capital Management, where he was responsible for overseeing portfolio acquisitions, financings, joint ventures, dispositions and strategic workout transactions. Wilhite has also served as an associate in the transactional practice group of Greenberg Traurig, LLP in Irvine, California.

Wilhite earned a bachelor’s degree in political science and communication from the University of Southern California and a juris doctorate from the University of Minnesota Law School. Wilhite is a member of the California State Bar Association.​

Stefan Oh
EVP, Acquisitions

Stefan Oh serves as executive vice president, acquistions for American Healthcare REIT. He previously served in the same capacity with American Healthcare Investors, LLC, as well as senior vice president, acquisitions of Griffin-American Healthcare REIT III and executive vice president, acquisitions of Griffin-American Healthcare REIT IV. The merger of those REITs and the business and operations of American Healthcare Investors formed American Healthcare REIT in October 2021.

Oh’s 25-year career in commercial real estate began as an auditor within Ernst & Young LLP’s EYKL Real Estate Group in Los Angeles, California in 1993. In 1999, he joined HCP, Inc. (NYSE: HCP), one of the largest publicly traded healthcare REITs in the nation, where he served as director of asset management and later as director of acquisitions. Oh joined Grubb & Ellis Company’s investment management division in 2007 as vice president of acquisitions, healthcare real estate, and helped launch Griffin-American Healthcare REIT II in 2009, serving as its senior vice president-acquisitions until its $4.0 billion merger with NorthStar Realty Finance Corp. (NYSE: NRF), now known as DigitalBridge (NYSE: DBRG), in December 2014.

Oh has participated in the acquisition of more than $13.5 billion of healthcare real estate during his career. He received a bachelor’s degree from Pepperdine University and is a certified public accountant.​

Kenny Lin
EVP, Accounting & Finance

Kenny Lin serves as executive vice president, accounting & finance for American Healthcare REIT. He previously served in the same capacity with American Healthcare Investors, LLC, as well as vice president, accounting & finance of Griffin-American Healthcare REIT III and Griffin-American Healthcare REIT IV. The merger of those REITs and the business and operations of American Healthcare Investors formed American Healthcare REIT in 2021.

He is responsible for all financial forecasting, accounting and tax matters on behalf of the company. Lin has 16 years of experience in both finance and accounting for real estate and real estate-related companies. Prior to joining American Healthcare Investors, he served as the chief accounting officer and then chief financial officer of the largest, privately-owned telecommunications infrastructure company in the U.S., where he oversaw the accounting, taxation, financial reporting and human resources functions of the company. He has also participated in the successful completion of many business merger transactions or acquisitions and played a key role in managing several initial public filings (SEC Forms S-1 and S-11) and business merger filings (SEC Form S-4), including the merger between NNN Realty Advisors, Inc. and Grubb & Ellis Company in 2008. Throughout his career, Lin has served in various financial accounting roles within publicly traded companies, including Johnson & Johnson, BNY Mellon Bank, and STAAR Surgical Company.

Lin received a bachelor’s degree in accounting from California State University, Los Angeles and a master of accounting degree from the University of Southern California. Lin is a licensed certified public accountant in the State of California, and he is also a certified financial planner and certified management accountant.​

Wendie Newman
EVP, Asset Management

Wendie Newman serves as executive vice president, asset management for American Healthcare REIT, where she oversees the strategic and asset management function of the company’s nationwide portfolio of medical office buildings. She previously served in the same capacity with American Healthcare Investors, LLC, as well as vice president, asset management of Griffin-American Healthcare REIT III and Griffin-American Healthcare REIT IV. The merger of those REITs and the business and operations of American Healthcare Investors formed American Healthcare REIT in October 2021.

Newman joined American Healthcare Investors from Ventas’ (NYSE: VTR) wholly owned medical office affiliate, Lillibridge Healthcare Services, where she oversaw the company’s medical office building assets in the Western United States, which included approximately 122 medical office buildings totaling 7.1 million square feet. Ventas is one of the largest healthcare real estate investment trusts in the country. Prior to Lillibridge, Newman held a similar role at Nationwide Health Properties, where she oversaw the company’s national medical office building portfolio until their acquisition by Ventas, Inc. in 2011.

Earlier in her career, Newman held senior positions with PM Realty Group, Sares-Regis Group and CBRE, where she was involved in various real estate activities including acquisitions, dispositions, asset management, leasing and operations for multiple commercial asset types.

Newman received a bachelor’s degree in business administration from the University of Southern California, and a master’s of business administration from California State University, Long Beach.

Ray Oborn
EVP, Asset Management

Ray Oborn serves as executive vice president, asset management for American Healthcare REIT. He is responsible for the management of the company’s extensive portfolio of senior housing, skilled nursing and hospital assets throughout the United States and the United Kingdom. With more than 25 years of senior level experience in the healthcare space, Oborn has extensive experience in the administration and development of facilities that provide independent living, assisted living, Alzheimer’s/memory care and skilled nursing for seniors.

Oborn previously served as president of Cherrywood Pointe Investment, LLC and executive vice president of United Properties, a real estate investment and development company based in Minneapolis, MN. As president of Cherrywood Pointe, he was directly responsible for managing the firm’s senior housing portfolio and strategic growth initiatives.

Oborn served as senior regional vice president of operations for Brookdale Senior Living from 2014 to 2017. In this capacity, he was responsible for the operations of more than 50 communities in six states across the Mountain West region. He also previously served in executive capacities with New Perspective, Silverado and Sunrise Senior Living, where he was the senior vice president of operations for the western division and oversaw in excess of 70 communities in the Western US and Canada. He began his career with ManorCare Health Services in 1995 as a licensed nursing home administrator.

Oborn received a bachelor’s degree in behavioral science and health and an MBA from the University of Utah.

Cora Lo
SVP & Assistant General Counsel

Cora Lo serves as senior vice president, assistant general counsel – corporate of American Healthcare REIT, Inc. She previously served in the same capacity with American Healthcare Investors, LLC, as well as corporate secretary and assistant general counsel of Griffin-American Healthcare REIT III and Griffin-American Healthcare REIT IV. The merger of those REITs and the business and operations of American Healthcare Investors formed American Healthcare REIT in October 2021.

Lo is responsible for all corporate and securities compliance for the company, a role she previously served for Griffin-American Healthcare REIT II until its $4 billion merger with NorthStar Realty Finance Corp. (NYSE: NRF), now known as DigitalBridge (NYSE: DBRG), in December 2014. Prior to joining American Healthcare Investors, Lo served as senior corporate counsel for Grubb & Ellis Company, as well as senior corporate counsel and securities counsel for various investment management subsidiaries of Grubb & Ellis from 2005 through 2011. Previously, she spent more than three years as general counsel of a publicly traded company and an additional three years in private practice.

Lo received a bachelor’s degree from the University of California, Los Angeles and a juris doctorate from Boston University. She is a member of the California State Bar Association.​

Charlynn Diapo
SVP, Accounting & Finance

Charlynn Diapo serves as senior vice president, accounting & finance for American Healthcare REIT, Inc., where she has comprehensive oversight of corporate accounting operations and consolidated financial reporting. She previously served in the same capacity with American Healthcare Investors, LLC, where she oversaw corporate accounting and financial reporting on behalf of Griffin-American Healthcare REIT III and Griffin-American Healthcare REIT IV. The merger of those REITs and the business and operations of American Healthcare Investors formed American Healthcare REIT in October 2021.

Diapo served in a similar capacity for Griffin-American Healthcare REIT II until its $4 billion merger with NorthStar Realty Finance Corp., now know as DigitalBridge (NYSE: DBRG) in December 2014. Since 2008, Diapo has served in various financial management positions as a key leader overseeing the financial accounting, reporting and compliance of various REIT portfolios invested in healthcare, apartment and industrial real estate. Prior to joining American Healthcare Investors in 2013, she served as vice president and controller of the North American portfolio of DEXUS Property Group, a publicly traded Australian REIT. At DEXUS, she executed the internalization of the U.S. finance and accounting function for a $1.3 billion industrial real estate portfolio. Throughout her career, Diapo has served in various financial accounting roles within publicly traded companies, including Grubb & Ellis Company and City National Bank. She began her professional career in 2002 as an auditor at Deloitte & Touche, focusing on clients within the financial services industry.

Diapo earned a bachelor’s degree from the University of California, Los Angeles in mathematics and applied science, with a minor in accounting. She is a licensed certified public accountant in the State of California.

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