Executive Management

Jeff Hanson is a founding principal of American Healthcare Investors, as well as the chairman and chief executive officer of Griffin-American Healthcare REIT II (formerly known as Grubb & Ellis Healthcare REIT II), the firm’s primary investment vehicle.

Griffin-American Healthcare REIT II is a $1.5 billion public company that invests in clinical healthcare real estate nationally, including medical office buildings, hospitals, skilled nursing and assisted living facilities.  The rapidly growing REIT raised nearly $750 million of investor equity in 2012, during which it tripled the size of its portfolio and expanded its geographic reach across 27 states.

Prior to founding American Healthcare Investors, Hanson served as one of five executive officers of Grubb & Ellis Company.  In this role, he operated in a dual-capacity as chairman and chief executive officer of Grubb & Ellis Healthcare REIT II, and as chief executive officer of the firm’s investment management subsidiary, Grubb & Ellis Equity Advisors. 

Mr.  Hanson led this national investment management platform, comprised of publicly registered non-traded REITs, separate accounts and institutional joint ventures, from 2006 to 2011.  Over the course of his career, Hanson has directly overseen more than $11 billion in combined real estate transactions across 32 states, including $3.5 billion of healthcare-related real estate assets.

In September 2012, Hanson was named one of “Southern California’s Real Estate Icons” by Real Estate Forum magazine.  He has also been named one of National Real Estate Investor magazine’s "10 to Watch"; Institutional Investor magazine’s "20 Rising Stars of U.S. Real Estate"; and been selected by Commercial Property News as "Rising Leader" and "Net Lease Executive of the Year".

Hanson is a member of the boards of the Southern California chapter of YPO and the Forum of Christian Business Leaders.  He earned a bachelor’s in business administration with a dual emphasis in corporate and real estate finance from the University of Southern California.

Danny Prosky is a founding principal of American Healthcare Investors and the president and chief operating officer of Griffin-American Healthcare REIT II.  He is also a member of the REIT’s board of directors.

Mr. Prosky has spent the entirety of his 20-year career in the specialized field of healthcare real estate investment, where he has been responsible for more than $5 billion in acquisition transactions.  He previously served as executive vice president of healthcare real estate with Grubb & Ellis Company and as the president and chief operating officer of Grubb & Ellis Healthcare REIT II (now known as Griffin-American Healthcare REIT II).

Prior to launching Grubb & Ellis Healthcare REIT II in 2009, Mr. Prosky served as executive vice president of Grubb & Ellis Healthcare REIT (now known as Healthcare Trust of America, Inc.), overseeing the acquisition of more than $1.5 billion of healthcare real estate.  Healthcare Trust of America is now publicly traded on the New York Stock Exchange (NYSE:HTA) with a market capitalization of approximately $2.4 billion.    

Previously, Mr. Prosky served in a variety of senior positions for 14 years with two publicly traded healthcare REITs, American Health Properties and Healthcare Property Investors (NYSE: HCP).  HCP acquired American Health Properties in 1999 and is currently the largest publicly traded healthcare REIT in the nation.

Mr. Prosky received a bachelor’s degree from the University of Colorado and a master’s degree from Boston University.

Prior to co-founding American Healthcare Investors, 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. 

Streiff served as senior vice president of investment operations and chief real estate counsel for Grubb & Ellis' investment management subsidiary prior to his appointment as general counsel.  In this role, Streiff was responsible for all real estate-related legal matters, and directly oversaw the operations of the company’s public, private, and institutional investment vehicles, including acquisitions, dispositions, and structured finance functions across a diverse range of investment offerings. 

Previously, Streiff served as an associate in the real estate department of Latham & Watkins LLP in New York, where he represented principals, developers and lenders in structuring commercial real estate transactions for clients including General Electric, Goldman Sachs, and Healthcare Properties, Inc. 

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

Stefan Oh’s 18-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 Health Care Property Investors, Inc., the largest publicly traded healthcare REIT in the nation, where he served as director of asset management and later as director of acquisitions. Oh joined Grubb & Ellis Company in 2007 as vice president of acquisitions, healthcare real estate, and helped launch Griffin-American Healthcare REIT II in 2009, serving as an officer of the REIT and as its senior vice president of acquisitions ever since.  He has participated in the acquisition of more than $10 billion of healthcare real estate during his career. Oh received a bachelor’s degree from Pepperdine University and is a certified public accountant.

As senior vice president of asset management for American Healthcare Investors and vice president of asset management for Griffin-American Healthcare REIT II, Chris Rooney directs the strategic asset and portfolio management function of the rapidly growing REIT portfolio.  Rooney previously served as vice president of asset management for the investment management subsidiary of Grubb & Ellis Company, where he oversaw portfolios exceeding more than $1 billion on behalf of various private and public real estate investment programs, including the first Grubb & Ellis healthcare REIT and Grubb & Ellis Healthcare REIT II (now known as Griffin-American Healthcare REIT II).  He possesses extensive asset management experience spanning the four core clinical healthcare real estate types, medical officebuildings, hospitals, skilled nursing facilities and assisted living facilities.  Rooney is a graduate of Arizona State University.

Shannon Johnson serves as senior vice president of finance and accounting for American Healthcare Investors, as well as chief financial officer of Griffin-American Healthcare REIT II, a role she has filled since the REIT’s inception in 2009.  She leads a team of 14 experienced accounting professionals, all of whom have specialized experience in healthcare-related commercial real estate investment.  Johnson previously served as the financial reporting manager for the investment management subsidiary of Grubb & Ellis Company since January 2006 and has served as the chief financial officer of two other public REITs previously sponsored by Grubb & Ellis. From 2002 to 2006, she served as an auditor with PricewaterhouseCoopers LLP and with Arthur Andersen LLP from 1999 to 2002, where she worked on a variety of public and private company accounts. Johnson is a certified public accountant and received a bachelor’s degree from the University of California, Los Angeles.

Cora Lo serves as senior vice president, securities counsel of American Healthcare Investors. She began serving as an officer and secretary of Griffin-American Healthcare REIT II in November 2010, having previously served as assistant secretary since March 2009. Prior to joining American Healthcare Investors, she served as senior corporate counsel for Grubb & Ellis Company since December 2007.  Lo also served as senior corporate counsel and securities counsel for various investment management subsidiaries of Grubb & Ellis since 2005.  Prior to joining Grubb & Ellis, 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.

Trevor Drummond serves as vice president of finance and accounting, as well as controller of Griffin-American Healthcare REIT II, a role he has served in since the REIT’s inception in 2009.  Prior to joining American Healthcare Investors, Drummond served as REIT controller at Grubb & Ellis Company since 2006, originally for Grubb & Ellis’ first healthcare REIT.  Earlier in his career, he served as financial reporting manager at Commercial Capital Bank, accounting manager with New Century Mortgage, and as assistant controller with Consumer Portfolio Services.  Drummond is a certified public accountant and a graduate of the University of Arizona.