Palo Alto, California Retirement Community Staff

Meet Our Staff

We have top-notch service because we have a dedicated staff. These are the people who work tirelessly to make Vi at Palo Alto a more comfortable place for you.
Executive Director | Vi at Palo Alto

John Koselak Executive Director

As Executive Director, John oversees every aspect of the community, which includes the quality of service, amenities, care, and programming for each and every Vi at Palo Alto resident. John previously worked at Vi at Grayhawk and has been with Vi since 2005.

Yannick Gilbert Associate Executive Director

Yannick oversees functional departments and administrative projects for Vi at Palo Alto, including resident transfers, Project Management, Food and Beverage, and Risk Management. Yannick joined the Vi at Palo Alto team in 2013 as the Care Center Administrator. 

Michael Wilson Sales Director

Mike directs all of our sales efforts at Vi at Palo Alto. He also manages each sales team member, and represents Vi to the larger Palo Alto community. Mike joined the Vi at Palo Alto team in 2008, and is originally from Los Gatos, California.
Mike Nitsche Care Center Administrator

Mark Nitsche Care Center Administrator

As the Care Center Administrator, Mark works closely with his team of nurses and support staff to develop a personalized approach for every care center resident. He has over 13 years of experience across various levels of care. Mark graduated from University of San Francisco studying Organizational Behavior & Leadership and is licensed in California and Utah as a Licensed Nursing Home Administrator. 


Tracey Brown Director of Nursing

Tracey is responsible for all aspects of managing the quality of care and services provided to our residents of Vi at Palo Alto’s Care Center, which includes Assisted Living, Memory Support, and Skilled Nursing accommodations. She also oversees the Care Center nursing staff and works directly with the Care Center Administrator to create a collaborative and efficient workplace. She strives to provide resident center care while adhering to standards of care and policies. Tracey has over 25 years of experience working in healthcare.

Shari Okumura Director of Human Resources

Shari works to enhance both resident and employee satisfaction through oversight and management of human resources at Vi at Palo Alto. Shari spent 12 years in Human Resources at Hyatt Hotels before joining the Vi at Palo Alto team.

Manuel Villarreal, CPA Director of Accounting

Manuel is responsible for all accounting operations for Vi at Palo Alto. Manuel, a certified public accountant (CPA), has worked at Vi at Palo Alto since 2009.

Dean La Russa, CEC, CDM, CFPP Executive Chef

Executive Chef Dean La Russa oversees the culinary program for Vi at Palo Alto, including menu creation and food preparation. He is a certified executive chef (CEC), a certified dietary manager (CDM) and a certified food protection professional (CFPP).  Chef Dean joined the Vi at Palo Alto team at the community’s opening in 2005 and is originally from Belmont, CA.

Luis Lopez, CFPP, CDM Director of Dining Services

Luis makes dining an experience. He manages our dining room – from table reservations and plate settings, to the personalized service each resident receives. He joined Vi at Palo Alto during the community’s 2005 opening, and has more than 26 years of experience in the dining industry.

Siobhan Rhea-Surraco, MA Gerontology Director of Resident Services

Siobhan assists independent living residents and their family members should they need support during a change in a resident’s health. She also works to ensure residents receive the appropriate level of care and service while in independent living. Siobhan oversees the Wellness Center as well as Concierge.

John Langford Director of Engineering

John is responsible for security and maintenance of the community’s physical plant as well as the numerous buildings on our campus. He joined Vi at Palo Alto in 2018.

Ross Miller, CHHE Director of Housekeeping

Ross oversees the housekeeping function for the community, with a focus on providing a comfortable living environment for every resident. Ross joined the Vi at Palo Alto community in 2005.