Leadership   

At MMC, our team of experts are knowledgeable professionals who stay ahead of news and trends to keep you updated. We value our business partners the same way we view our own team.  

Mashi Rahmani, M.B.A., Ph.D. (candidate)

Founder and Chief Executive Officer  

Mashi Rahmani established MMC, Inc. in 1983. Under Mr. Rahmani's leadership, MMC has mushroomed from its early inception as the total solution for small business enterprises to the premier HRO for mid-market and health care employers.

Mr. Rahmani earned his B.S. in Aerospace Management at the University of Houston, an MDE from theUCLA Anderson School and completed his Global MBA at TRIUM (NYU Stern, London School of Economics and HEC-Paris). 

Mr. Rahmani is a member of the executive board of the Spiritual Assembly of the Bahai’s of Los Angeles, the Board of Trustees of Claremont Graduate University, the Board of Visitors of the Peter F. Drucker Graduate School of Management, and the University of California at Los Angeles Human Resources Round Table. 

MMC has worked with the U.S. Department of Health and Human Resources as well as developing new programs for the Chinese government.

Additional Links: Business Renaissance Quarterly | BBC: The Business of Religion | CV

Damian Castrellon
Director of Client Relations

Damian Castrellon joined MMC, Inc. in 1992. Mr. Castrellon brings 25 years of experience in payroll, HRIS technologies, IT and customer service. He oversees a team of competent human resources, IT and payroll service professionals. Mr. Castrellon has been an advocate and a promoter of cutting edge technology and new concepts in payroll service organizations. He has been serving on the board for the American Payroll Association, Los Angeles Chapter since 1998. Prior to joining MMC, Mr. Castrellon served in a key leadership role for ADP. He has training from Anderson School of Management at UCLA as well as SAP Advanced Software Technology.

Nariman Hadizad, M.S.
I.T. Manager

Mr. Hadizad joined MMC in 1996. He is a seasoned and talented Computer Engineer who holds a Masters in Science degree from the prestigious University of Southern California. Immediately after earning his graduate degree in 1989, Mr. Hadizad began gaining professional experience with mid and large size corporations, and eventually brought his extensive experience to the Human Resource Organization field by joining MMC, Inc.

Mr. Hadizad has extensive experience in human resource organizations, payroll administration, and development of cutting edge proprietary software for human resource administration. He continues to develop and enhance his knowledge and expertise in several different subjects, one of which is with SAP (Advanced Software System) as he assists MMC with preparing for its global expansion.

David Kravetz
Payroll Administration Manager

David Kravetz has been with MMC since 2001. Mr. Kravetz has several years experience in managing technical processes and secure data collection of confidential information. Prior to joining MMC, he served as an Operations Manager with Landmark Securities.

Crystal Miller-O'Brien, J.D., C.D.R. 
Labor & Employment Law Manager

Crystal Miller-O’Brien joined MMC, Inc. in 2006. Ms. O’Brien has extensive experience in managing work environment disputes. Before joining MMC, Ms. O’Brien was a litigation associate for large and midsize law firms. She also served as a workers’ compensation hearing representative for Argonaut and Wausau Insurance Companies. She is a member of the ADR panel for the Los Angeles County Superior Courts and is an executive member of the California State Bar Association’s Conference of Delegates which reviews proposed legislation impacting employees in California.

Michele O'Donnell, M.S. Human Resources Management

HR Services Manager

Michele O'Donnell joined the team in January 2007 and currently leads MMC's elite team of HR Consultants. Ms. O'Donnell has been involved in the Human Resources industry for more than 14 years, bringing vast training and management experience to the MMC leadership ranks. Her experience spans the broad scope of labor law, regulatory compliance and HR Best Practices, drawn from her rich experience as Director of HR for several firms throughout her career. She currently works to ensure that MMC's consultants forge long lasting relationships with our clients, fostered in exceptional service and unsurpassed HR expertise.  Ms. O'Donnell earned her baccalaureate degree in Business Administration from Auburn University before receiving her Masters degree in Human Resource Management from Troy State University.

Paul Rahmani
Logistics Manager

Paul Rahmani has been with MMC since 1994. Mr. Rahmani brings extensive domestic and international high-tech experience to MMC. Prior to joining MMC, he held key positions throughout the world as a flight engineer, technical instructor and leader for international airline and manufacturing corporations.

Deborah Rodriguez, P.H.R.
Division Manager

Deborah Rodriguez has been with MMC since 2000. She and her team are responsible for assuring that MMC’s services are carefully tailored for client’s organizational needs. Ms. Rodriguez brings several years of sales, marketing and customer service experience. She was a key leader for AT&T’s business development division prior to joining MMC.

Shirley Tenorio, Life Agent
Employee Benefits Compliance Manager

Shirley Tenorio joined MMC in 2003. Ms. Tenorio has extensive experience in negotiating and managing employee welfare benefit packages with major health care insurance carriers. Prior to joining MMC, Ms. Tenorio gained legal and business management experience as a key leader for mid-market business enterprises.