Chief Executive Officer
John E. Chaquica has over 30 years of experience in risk management and JPA leadership. He served as President and Chief Operating Officer at GHC from 2008 to August 2014, as which time he assumed the position of Chief Executive Officer. John is responsible for laying out the strategic plan of GHC and heads up the firm's JPA Management Division, Optimum Risk Advisers. Prior to joining GHC, John was the Chief Executive Officer of Bickmore Risk Services, served as Executive Director for several California public entity self-insurance pools, and was a consultant to several other entities. Before joining Bickmore, John was a partner in Gilbert Accountancy Corporation, when he was the audit partner and industry team leader on public entity self-insured groups. John served as President and Treasurer of Sacramento's Court Appointed Special Advocates (CASA). He remains very active in the American Institute of Certified Public Accountants (AICPA) and the California Society of Certified Public Accountants (CSCPA). John holds a MBA from Golden Gate University and a BS in Accounting from California State University, Sacramento, and an ARM designation from the Insurance Institute of America.
CalMHSA Program Director
Ann Collentine, MPPA, is the Program Director, of GHC JPA client California Mental Health Services Authority (CalMHSA). Ms. Collentine succeeded retiring Edward Walker, LCSW, who was CalMHSA's first Program Director. With over 20 years of administrative experience, 17 of those working in California's mental health system, Ann holds an MPPA from California State University, Sacramento, a Secondary Education Teaching Credential from California State University, San Francisco, and a BA in Economics from University of California, Santa Cruz. She comes to CalMHSA from the Mental Health Services Oversight and Accountability Commission (MHSOAC) where she served as Mental Health Program Supervisor.
John M. Derosa has 25 years of multi-line adjusting experience. During his career, John has adjusted liability, commercial and personal property losses and has developed a high degree of skill in operating IBM / Windows compatible computer systems. Prior to joining GHC, John worked for Allstate Insurance Company, Sequoia Insurance Company, Unigard Insurance Group, AIM Insurance Company, and Koning & Associates. John has a BS from California State University, Sacramento.
Jon Hendrickson began his claims career in 1977 with Royal-Globe Insurance where he was trained as a multi-line adjuster. Since joining GHC in 1983, he has specialized in self-insured liability claims. Jon has been the dedicated liability claims administrator for the County of El Dorado since 1986 and has served as the in-house TPA in the County's offices since 1996. Following four years active duty in the US Navy, Jon earned his BA in History and Speech Communication from California State University, Sacramento.
(916) 233-2544 and (916) 859-4800
Tammy Hunt came to GHC from the City of Stockton where she worked on criminal and civil litigation cases in the City Attorney's office for 11 years. Her work at the City of Stockton included the handling of the city's subrogation cases - a little more than 1,000 cases at any given time. She also maintained property, general liability, auto, crime, council bonds, notary public, and numerous other insurance programs for the City. Highly knowledgeable and experienced in both public and private sector claims administration and litigation management processes and procedures, Tammy earned an AA and BA from Humphreys College. She is a Certified Paralegal and also holds a California Certified Legal Secretary Designation.
Account Liaison/Board Member
Michael J. Kielty has been in the risk management and JPA leadership field for over 30 years - 18 years of which were as GHC’s Chief Executive Officer. He began his highly respected career at Fireman's Fund Insurance Company, responsible for adjusting workers' compensation and liability claims. Over the years he served as JPA Executive Director / Program Director for School Insurance Authority (SIA), North Valley Schools Insurance Group (NVSIG), Santa Cruz / San Benito County Schools Insurance Group (SC-SBSIG), California Housing Workers' Compensation Authority (CHWCA). A former Senior Consultant at Advanced Risk Management Techniques (ARM Tech) hired to manage and grow the JPA Division, Mike holds a BS in Business Administration from California State University, Fresno, and an ARM designation from the Insurance Institute of America. He is a Charter Board Member of the CAJPA Accreditation Committee.
CALMHSA Associate Program Manager
Aubrey Lara is the Associate Program Manager of GHC JPA client California Mental Health Services Authority. She has over 10 years of experience in community-based social services. She has a successful record in program administration and development including project management, leadership development, grant writing, evaluation, policy advocacy, and public/private collaboration. Aubrey received her Bachelor’s degree in Business Administration with a focus in Public Administration from Hawai’i Pacific University and is currently pursuing her Master’s degree in Business Administration at California State University, Sacramento. Most recently, she was with Each Mind Matters’ Outreach and Engagement team, a project of California Mental Health Services Authority.
Maya Maas, GHC's new Corporate Analyst, has extensive experience in a variety of corporate administration areas, including: operations, personnel, and finance. At GHC she focuses on supporting the firm's seamless workflow, as well as the distribution of information and support to GHC's many internal and external customers. The steward of GHC's operational efficiency and effectiveness, Maya works across GHC departments, successfully helping teams meet GHC client needs and expectation. She oversees the training and supervising of new employees in software use and office procedures, as well as coordinates GHC's office events. A graduate of California State University, Chico, with a BA in English as well as two certificates (Editing and Technical Writing), Maya has strong editorial expertise which she applies to GHC proprietary documentation and manuals.
President, Claims Administration
Randy Rendig’s claim career began in 1976 at Liberty Mutual Insurance Company in San Jose, California. He also worked many years for California Casualty as the manager of their San Jose branch. Randy earned a BA from the University of California, Davis and holds professional designations of RPA and CCLA. He is a Liability Specialist in the public entity arena and is the Account Manager for the County of Sacramento.
GHC Finance Director
Prior to joining GHC in 2009, Kim J. Santin was a Group Administration Manager at Bickmore Risk Services. Earlier in her career she was in charge of auditing, accounting services, and consulting engagements at Gilbert Accountancy Corporation for over 50 joint powers authorities and school districts. Her previous experience also includes seven years at Cooperative Personnel Services as the Financial Manager responsible for budgeting, financial preparation and presentation, financial forecasting, cash flow management, and strategic management. A former independent consultant to California pools and SIGs, Kim is a member of the American Institute of Certified Public Accountants (AICPA) and holds a BS from California State University, Sacramento.
Cheryl S. Smith rejoined GHC earlier this year. As a Senior Adjuster, she reports directly to GHC President, Claims Administration Randy Rendig, RPA, CCLA. Cheryl began her claims career with Farmers Insurance Group in 1992 where she investigated, negotiated and settled direct, attorney represented and litigated bodily injury claims. The majority of her years at Farmers Insurance were spent specializing in cases involving complex coverage issues and litigation. In 2008, she became an independent Senior Adjuster for GHC handling public entity and insurance liability claims from the initial claim stages through litigation. She also handled AOE/COE and employment practice investigations as well as construction defect cases. A coverage specialist known for her extensive industry knowledge and work excellence, Cheryl holds the designation IIA and a BS from Sacramento State University. She also attended Sierra Community College.
Mark R. Stone has been adjusting public entity liability claims for 20 years and has over 30 years of litigated claims management experience. He has the ability to handle claims management functions from investigations to attending settlement conferences and mediations. In 1986, Mark was the first claims examiner employed by the CSAC Excess Insurance Authority. He came to GHC from the Schools Insurance Authority (SIA) where he served for two years as the Risk Manager and 14 years as the Liability and Property Claims Department Manager. Mark served on the Schools Excess Liability Fund Board of Directors for over 13 years. He has an ARM designation from the Insurance Institute of America, and is a graduate of University of California, Davis where he obtained his BS in Physiology.
Chuck Torretta began his claims career in 1982 at Safeco Insurance as a Multi-Line Field Adjuster before moving onto Maryland Casualty as a Senior Property Adjuster in 1986. For the next 21 years he was been involved in a variety of supervisory positions at the home office and regional operations level with Crum and Forster and the Nationwide Companies including Allied and TIG. He has been at the Director and Manager levels overseeing operations in personal, commercial and farm business agricultural lines. He has earned a SCLA (Senior Claims Law Associate) designation and also MCSA (Master Certified Special Arbitrator). He was an integral part of Arbitration Forums as an arbitrator from 1991 to 2013. He graduated from the University of San Francisco with a BS in Business Administration and Management Science. He has been a Claims Administrator for George Hills since May of 2007.
Shirley Tse began her claims career in 1990 adjusting workers' compensation claims. She worked for the Massachusetts Attorney General's Office and served as a member of the Workers' Compensation Task Force investigating and assisting in the prosecution of insurance fraud cases. She continued her claims career at Liberty Mutual Insurance Company. In addition to her insurance claims experience, Shirley has over 10 years experience as an Investigator. She has worked for state, public and private agencies investigating civil and criminal cases, as well as responding to employment discrimination cases. Shirley is a graduate of Northeastern University and obtained her BS in Criminal Justice.
Pat Vitale, ARM, joined GHC as a Public Entity TPA Claims Manager in the fall of 2012. She works out of our Rancho Cordova Office and on-site, at the Public Agency Risk Sharing Authority of California (PARSAC). She manages and is responsible for all of PARSAC's strategic and operational claim handling needs, and reports directly to GHC's Vice President, Property/Liability, Randy Rendig, RPA, CCLA. Pat is a well-known, highly respected TPA industry executive with over 25 years of experience in public and private sector multi-line claims investigation. Formerly with Corvel Corporation where she served from 2004 until recently as Northern California Liability Supervisor, Pat also served as Assistant Branch Manager for Carl Warren and Company in Sacramento from 1991-2004, and as Property Damage/Homeowner/Bodily Injury Adjuster and SIU Examiner for the California State Automobile Association for 1986 to 1991. Known for her strong knowledge base, communication skills, and demonstrable workflow efficiencies, Pat's career history also includes working for Cal Western Life Insurance as a Policy Owner Services Supervisor from 1979-1986. Pat is a member of the California Association of Independent Insurance Adjusters (CAIIA) and holds an Associate in Risk Management (ARM) designation. She is a presenter at CAJPA conferences, and is a member of CAJPA's Tort Liability Committee.
Quality Operations & Subrogation Manager
Kathleen Williams is responsible for a variety of duties in support of GHC's best practice TPA services, including the production and distribution of client monthly reports, the optimization and standardization of our claims handling technology (SIMS) company-wide, and the documentation of GHC's compliance processes and Medicare Set Aside requirements. Kathleen also manages the subrogation recovery team at GHC as well as file audits, and specific special quality control projects. A seasoned risk manager with significant experience in the insurance industry and public sector, Kathleen is the former Risk Manager for the City of Stockton where she also served as a Claims Analyst-Liability Investigator for seven years. Prior to working at the City of Stockton, she was an Internal Auditor for Delta Health Systems, and served as a Claims Examiner at Prudential Healthcare. She holds a BS in Criminal Justice from California State University, Sacramento.