About Legacy Park Advisors

Stronger Together
A Team Dedicated to Your Tax Success


At Legacy Park Advisors, we believe that tackling complex tax needs requires more than one person—it takes a dedicated team. With our collective expertise and personalized approach, we ensure no detail is overlooked, providing the support and solutions you deserve.


Our Team 
Meet Your Team

Gregory S. Park, CPA

Founder and CEO

Greg was born and raised in San Diego. He graduated St. Augustine High School in 2008. After high school, he moved to Canada and the east coast for a few years to pursue a career in ice hockey. Greg graduated from Northern Arizona University with two degrees, B.S. of Accountancy and a B.S.B.A focusing in Finance. He worked at one of the larger local CPA firms in San Diego specializing in small business and individual tax returns since 2015. Greg founded Legacy Park Advisors in 2021 to provide tax and consulting services to owners of small businesses, high-net-worth individuals, and individuals with unique tax situations.

Jim D. Siemann, CPA

Tax Manager

Jim specializes in tax planning and compliance for individuals, trusts, estates, and small businesses, with significant experience helping high net worth clients optimize their tax position while maintaining full compliance. Jim brings a practical, client-focused approach to complex tax matters, helping clients navigate everything from estate and trust administration to business tax strategy.
 
A born and raised San Diegan, Jim attended St. Augustine High School before earning his bachelor's degree in accounting from San Diego State University. He has been a practicing CPA since 2014.
 
Jim is a frequent speaker at St. Augustine High School alumni events, where he presents on taxation and tax strategy topics for fellow alumni. He also currently serves on the Board of Directors for the Boys and Girls Club of San Diego.
 
Outside the office, Jim is a big sports fan and avid golfer. He can often be found exploring America's Finest City or cheering on the Padres from his season seats with his wife, Michelle, and children, Cecil and Madeline.

Justin C. Gardiner, CPA

Tax Manager

Justin Gardiner is from Culpeper, VA. He has a Bachelor of Accountancy from Ole Miss and a Master of Accountancy with a Tax Concentration from the University of Virginia. He worked for two years at Deloitte in the International Tax Department. He also has 2 years of individual and small business tax experience at a local firm in his hometown. He has just moved to San Diego and is excited for the warm weather and hanging out at the beach with friends.

Connor A. Holsapple, CPA

Tax Manager

Connor Holsapple is a born and raised San Diegan. He attended Scripps Ranch High School before earning his bachelor's degree in Accounting from San Diego State University. After spending more than two years at PricewaterhouseCoopers in the Technology, Media, and Telecommunications sector, where he audited financial statements for private and newly public companies, Connor chose to transition into a role with a more direct connection to the people he serves.
 
Since 2023, he has been working at Legacy Park Advisors, where he specializes in serving individuals, trusts, and businesses. Connor values the relationships he builds with clients and finds purpose in helping people navigate meaningful financial and tax decisions.
 
Away from work, Connor remains a loyal Chargers fan and an avid supporter of SDSU basketball. He married his wife, Delaney, in July 2025, and the two welcomed their son, Vincent, in June 2026. Connor also loves spending time with his dog, Bella.

TJ Acierno, MBA

Director of People

Born and raised in San Diego, TJ is a proud graduate of St. Augustine High School. After high school, TJ attended St. John’s University in New York City. After graduating from St. John’s in 2012, TJ decided to continue his education and received his Master of Business Administration degree from the University of Redlands in 2014. Upon completing his MBA program, TJ worked in Corporate America for several years and joined Legacy Park Advisors in late 2022. When not working, you can find TJ at Petco Park cheering on his beloved Padres, in Anaheim rooting for the Ducks, watching St. John’s Basketball, or looking for his next pint of craft beer.

Phil G. Park

Chief Technology Officer

Phil is a San Diego native and an alumnus of St. Augustine High School (class of 2014). He graduated from Santa Clara University in 2018 with a B.S. in Finance and a minor in Management Information Systems. After college, he moved to San Francisco and worked in Risk Advisory and Business Consulting at Ernst & Young for 4.5 years. During his time at EY, he worked closely with public companies in the tech, life science and energy industries to identify, assess and mitigate financial and IT risk. Through this, he observed and learned how various businesses operate and improve efficiency. He joined Legacy Park Advisors in 2023 after returning home to San Diego. During his free time, he enjoys watching sports, playing hockey and golf, and spending time with loved ones.

Lesley Mota

Executive Assistant

Born and raised in San Diego, Lesley is a first-generation college student who is always eager to master even the most difficult tasks, as evidenced by her ability to speak four languages. Before joining Legacy Park Advisors, Lesley held a position of Administrative Assistant at Lemon Grove City Hall which strengthened her ability to provide outstanding customer service. When she isn’t providing excellent customer service for our clients, Lesley loves to spend time with her loved ones. She can often be found at Kate Sessions Park writing fictional stories and completing complicated puzzles. When the opportunity arises, she also loves whale watching.

Ana Carlos

Staff Accountant II

Ana Carlos was born and raised in Mexico and moved to San Diego five years ago, and quickly fell in love with the city's welcoming people and beautiful weather. She graduated from San Diego State University with a bachelor's degree in accounting. Ana would like to become a CPA and is currently working towards her license. In her free time, she enjoys spending time with her family and friends, relaxing at the beach, and exploring new restaurants to try delicious food.

Michael Goodridge

Staff Accountant II

Mike was born and raised in San Diego. He graduated from St. Augustine High School in 2016. After High School, he went to Chico State and graduated with a Bachelors in Marketing in 2022. Prior to working with us, Mike worked as a Tax Intern at Gatto Pope and Walwick for 8 months. In his free time, Mike loves to golf, snowboard and root for the Yankees.

Deion Reynolds, CPA

Outsourced Accounting Consultant, C.P.A.

Deion was born and raised in Riverside, CA where he played basketball at Centennial High School. Deion then went to graduate from San Diego State University as an Accounting major. He now serves in the Accounting and Real Estate industry. With a vast knowledge in Tax Preparation as well as Real Estate Investing & Strategies, Deion encapsulates the ability to highlight information pertinent in assisting his clients’ ability to make confident decisions. With his passion to be a lifelong resource to all his clients, Deion makes it a responsibility to produce the most optimal results. Deion holds extensive credentials including license as a Certified Public Accountant, Real Estate Agent & Mortgage Loan Originator.

Yvonne Caro

Administrative Assistant

I'm passionate about fitness, and wellness, always looking for new ways to stay active and take care of my body and mind. Astrology is a fun hobby of mine that adds a bit of curiosity and reflection to everyday life. I'm a lifelong learner at heart, always excited to pick up new skills, explore new interests, and keep growing.

Olivia Lines

Staff Accountant

Born in Oceanside, Olivia spent much of her life moving between San Diego and Bend, Oregon, and enjoyed the different lifestyles and outdoor experiences each place offered. In 2021, she returned to Southern California to complete her bachelor’s degree in Business at California State University Channel Islands in Ventura County. After graduating, she felt drawn back to San Diego and was excited to make it home once again. Olivia has enjoyed growing during her first year at Legacy Park Advisors and looks forward to continuing her career in accounting. Outside of work, she enjoys spending time with friends at the beach, exploring downtown San Diego, and learning to play volleyball.

Dean Olivo

Staff Accountant II

Cesar Ramirez

Staff Accountant

Jocelyn Sarria

Administrative Assistant

Joseph Laing

Staff Accountant

Contact Us 
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