Who we are

Wing C. Quan, CPA

Wing's 30-year accounting career includes specialized experience in construction and real estate development. After working for several different firms, Wing opened his own accounting firm in 1994 and joined Hinton, Kreditor & Gronroos in 1997. He also has expertise in auditing and litigation support, mortgage lending and manufacturing and distribution.
He is a member of the American Institute of Certified Public Accountants and the California Society of Certified Public Accountants. Wing has a bachelor's degree in accounting from the University of Southern California (1976).

Amy S. Bertolini, CPA

Amy joined Hinton, Kreditor & Gronroos in 1998 with a specialization in providing accounting and tax expertise to small businesses. She serves clients in real estate development, construction, manufacturing and distribution, medical and dental groups, technology and professional service companies. She also specializes in the audits of not-for-profit organizations.
Amy received her bachelor's degree in accounting from California State Polytechnic University (Pomona) in 1996. She is a member of the American Institute of Certified Public Accountants and the California Society of Certified Public Accountants.

Leslie Sobol, CPA

Leslie began her accounting career with the international firm of Laventhol & Horwath. She left public accounting to become the Controller of a multi-state telecommunications company. Returning to public accounting Leslie joined a local firm where she developed her talent for mentoring, development and education of clients and their bookkeeping staff. She has a wide mix of commercial enterprises, multi-state corporations and tax-exempt entities. Leslie has a Master of Science in Taxation and a Bachelors degree in Business Administration from California State University, Northridge. Leslie Serves as the Managing Editor of the Tax Development Journal.
Leslie's lifelong commitment to community involvement, team building, leadership and mentoring has been recognized by the Boy Scouts of America with the prestigious District Award of Merit and Woodbadge Beads for service and leadership. She is an active member of several social betterment and community groups.

Joseph Biag, CPA

Joseph has over 20 years in public accounting and specializes in auditing and consulting. He has expertise in providing services to growing, entrepreneurial companies in industries of retail, wholesale, manufacturing, construction and professional services.
Joseph received his bachelor's degree in accounting from California State University, Northridge in 1987. He is a member of the American Institute of CPA's and California Society of CPA's.

Nam Ook (Brian) Kim, CPA

Brian received his Bachelor of Arts from the University of California, Berkely in 1996 and his Masters in Business Taxation from the University of Southern California in 1998. He began his accounting career at KPMG, LLP working in the federal tax group. He later joined the firm Moss Adams, LLP. This regional firm provides a full range of accounting and tax services to midsized manufacturing clients.
Brian is a member of the California Society of Certified Public Accountants.

Janette Camps, CPA

Janette joined Hinton, Kreditor & Gronroos in 2008. She has 10 years in public accounting experience prior to joining HKG. She specializes in serving the commercial business clients, primarily manufacturing, distribution and professional service firms. The services she provides include audits, reviews, compilations, tax services and consulting.
"The most rewarding part of my work is helping our clients’ succeed. It is such a wonderful feeling knowing I've helped them achieve their goals." She enjoys the relationships built with her clients and strives to provide timely, excellent service.
She is a member of the American Institute of Certified Public Accountants and the California Society of Certified Public Accountants. Janette received her bachelor’s degree in accounting from California State Polytechnic University, Pomona in 1997.