Executive Bio's


Robert M. Frattarola

Executive Vice President

Robert received his BA in Sociology with a concentration in Business from The Johns Hopkins University. Robert entered the workforce as a Financial Advisor for Morgan Stanley in Baltimore, Maryland where he focused on client investment needs. Robert performed asset allocation, fundamental and technical analysis as well as diagnosed specific goals, timeframe and risk/reward analysis. Morgan Stanley’s product portfolio consisted of an array of financial and insurance products, including but not limited to Retirement Programs, Estate Planning, Life and Disability Insurance and Annuities.

Subsequently, Robert accepted a position with CNA Financial Corporation as an Account Executive in their Group Benefits Department in New York City where he sold and serviced accounts with 1-50,000 employees. Robert’s responsibilities included case rating, underwriting and developing solutions for benefit programs. CNA offered a wide variety of Group Benefits Products ranging from ancillary coverage’s such as, Life, Disability, Long Term Care, Dental & Vision Insurance to niche market medical plans.

In 2004 Robert joined Herbert L. Jamison & Co., L.L.C. in their New York City office. Robert’s responsibilities include marketing and servicing Health, Life, Disability, Long Term Care, Cafeteria Plans, and Retirement programs for individuals and groups.

Robert currently holds a New York Life and Health License as well as a Series 7 and 63.

General Insurance 

Gloria J. Stalzer, ARM, CIC, AAM, CPIW

Senior Vice President

Gloria's 30 year background in commercial lines has provided her with an innate ability to assist clients in fields such as Publishing, Radio & Television Broadcasting, Financial Institutions, Insurance Companies, Stock Brokers/Securities Dealers, Manufacturers, Exclusive Retail Stores, Large Not-for Profit Organizations, Attorneys, Telecommunications and Country Clubs. Gloria obtained designations as a CIC (Certified Insurance Counselor) in 1982, AAM (Associate in Automation Management) in 1987, CPIW (Certified Professional Insurance Woman) in 1988 and ARM (Associate in Risk Management) in 1992. She is a licensed Property and Casualty Insurance Broker in both New York and New Jersey.

Diane L. Barreiro

Vice President

Diane Barreiro began her insurance career with Marsh & McLennan in the onshore oil and gas property insurance division. She has held positions with several national and regional brokers in all areas of client service, marketing and risk management for a wide range of clients and industry types. Ms. Barreiro joined Herbert L. Jamison in 2004 as an account executive in the telecommunications department. In 2006, Diane became responsible for all new business marketing in the commercial insurance division.

Utilizing her broad range of insurance experience, Ms. Barreiro is now the Account Executive for Jamison’s Alternative Investments Insurance Management Group. Clients in this group include hedge funds, private equity firms, broker/dealers, and service providers, including compliance firms and third party marketers. In addition to the day to day management of professional insurance, claims and marketing, Ms. Barreiro is also responsible for the property and casualty and related coverages.

Ms. Barreiro is a summa cum laude graduate of Felician College with a Bachelor’s Degree in Organizational Management. She holds a New Jersey Property and Casualty Insurance License.

She is a frequent participant in industry conferences and seminars.

Professional Liability

John O. McDonald

Managing Director

John has been an insurance professional for over 30 years. John began his North American career in 1977 with J.H. Minet in Montreal working specifically on their large Accountants and Law Firm facilities. In 1981, he joined Marsh & McLennan’s Toronto office where he was responsible for the servicing, placement and development of the Canadian Law Society Professional Liability business.

In 1986 he joined Marsh’s FinPro Division in New York where he was responsible for leading Marsh’s Professional Liability Team. As a Managing Director, John was also responsible for coordinating and providing technical support on Professional Liability issues to Marsh’s U.S. office network.

In 1989, John left Marsh to join Jamison. Over the last twenty plus years, John has undertaken a number of roles within Jamison’s Professional Liability Division and currently manages Jamison’s brokerage operations and oversees the firm’s overall day-to-day operations.

John is a Director of Grosvenor Brokers, a Lloyd’s broker, a former Director of the CIAB, a former Director and active member of Risk ProNet International and the International Brokers Association (UNIBA).


Charles J. Caruso, CIC, CPIA

Executive Vice President


Charles has been with the Jamison organization for over 18 years and currently manages the day-to-day operations of the unit.  He also is responsible for maintaining all carrier relationships within the Brokerage Division.  He is a graduate of Monmouth College in West Long Branch, NJ and has earned a B.S. in Business Management as well as an A.A.S. in Business Administration.

Charles has concentrated his work entirely in the Professional Liability area since joining the firm.  In the past, Charles was responsible for maintaining client relationships for many different programs including Lawyers, Accountants, Dentists and Judges Programs.  The main focus of Charles’ work continues to be in the Lawyers Professional Liability field.

Charles is the current President of the Professional Insurance Agents of NJ (PIANJ), a member of the Board of Directors on their Executive and Finance Committees.  In addition to being the current President of the Organization, Charles has recently been appointed to serve on the Glenmont National Alliance Committee (GNAC) and in the past has served as Chair of the Education and Conference Committee as well as serving on the Legislative and Regulatory Committees.  Charles is a Past President of the NJYIP’s (New Jersey Young Insurance Professionals) as well as Past Chairman of the Association’s Nominations Committee and member of Executive Committee. 

In January of 2005, Charles was appointed to serve on the Board of Directors of the American Insurance Marketing and Sales Society.  In June of 2005, Charles was awarded NJYIP Director of the Year and in June of 2007 he was awarded New Jersey Young Insurance Professional of the Year. 

Charles holds a CIC (Certified Insurance Counselor) Designation as well as the Designation of CPIA (Certified Professional Insurance Agent).  He is a member of PLUS (Professional Liability Underwriting Society), a member of the New York City AIFA (Alliance of Insurance and Financial Advisors), and is a member of the Make-A-Wish Foundation Challenge Advisory Committee.  Charles is currently pursuing Registered Professional Liability Underwriter (RPLU) designation.


Dennis Duff

Senior Vice President

Dennis has over 15 years of experience in the insurance industry. In the past 10 years, Dennis has had extensive experience developing and placing Accountant and Lawyers Professional Liability insurance with emphasis on Medium to Large firms. Prior to joining Jamison Insurance Group, Dennis was a Regional Sales Director at Bertholon-Rowland Corp. overseeing the day-to-day operation as well as developing new business opportunities. Prior to joining Bertholon-Rowland Corp., Dennis was an Account Executive at Marsh & McLennan. Dennis was part of a team that started a Lawyers Professional Liability Insurance program. Dennis was overseeing the daily operations as well as new business growth. Dennis received a B.S. in Business Management from the University of Maryland. Dennis is a member of the Professional Liability Underwriting Society.

A.J. Haugen

Executive Vice President

Since joining Herbert L. Jamison & Co, L.L.C. in 2005, A.J. has spent the majority of his time developing relationships with medium and large size law firms throughout the U.S. His responsibilities include working directly with clients and insurance companies to develop customized insurance programs designed to fit each firm’s unique needs. In addition, A.J. manages the new business team for Jamison Risk Services (JRS). JRS focuses on the insurance and risk management needs of medium and large law firms throughout the country.

A.J. has played a key role in helping Jamison to expand its partnerships with the Association of Legal Administrators, the American Association for Justice, and the American Intellectual Property Law Association. He is a member of the Professional Liability Underwriting Society and is currently working on his RPLU designation.

A.J. is a 2000 graduate of Johns Hopkins University and current member of Johns Hopkins’ New York Alumni Chapter Committee. He was a three-time All American Lacrosse player, and went on to play for the Long Island Lizards of Major League Lacrosse, and Team USA in the 2006 World Games.

Michelle R. Coleman

Vice President

Michelle has over 25 years of experience in the professional liability insurance field with a high concentration on law firm’s needs and has been part of the Jamison organization since July 2000. Michelle is responsible for the servicing and marketing for numerous professional firms in the brokerage division.

Prior to joining Jamison, Michelle was an Assistant Vice President at Minet/Aon in Montreal working with the team responsible for servicing the largest law firms in the U.S. and was part of a select few asked to relocate to New York City. Michelle also worked for a New York City wholesale and retail brokerage firm as a Vice President servicing a wide spectrum of law firms. Michelle has taken numerous insurance courses in Canada and the U.S. and is a member of the Professional Liability Underwriting Society. Michelle is a licensed property and casualty insurance broker in both New York and New Jersey.

John Ercolani, ARM, CPCU

Vice President

John has been involved within numerous risk management specialties and services for almost 25 years. His background includes both large account underwriting (over $1MM in annual premium) and the providing of brokerage services for commercial, manufacturing and various hazardous service industries (construction, engineering, miscellaneous professional liability, tough products liability risks such as explosives, machinery manufacturers, and complicated environmental service firms). He served for nine (9) years as the Assistant Risk Manager for a $1BB dollar a year conglomerate, which provided numerous professional and manufacturing services to the commercial, federal and public marketplace. He developed, marketed and serviced one of the first Professional Liability programs that provided needed professional coverages to architects, engineers, construction managers and design build firms. And he has utilized this vast experience to co-author numerous chapters in various accredited association professional manuals (the Design Build Manual for the Design Build Institute of America or DBIA, and Professional Exposures for Architects and Engineers within the Design Build Industry, published by the International Risk Management Institute, or IRMI). He enjoys learning and new challenges and prides himself on his ability to find innovative solutions for difficult situations. He has completed his CPCU and his ARM, and is in the process of finishing his RPLU designation.


Thomasina Peele

Executive Vice President

Thomasina Peele is a Senior Vice President responsible for the Management and Operation of the Professional Services Division including the Lawyers and Accounts programs. Thomasina received her Bachelor of Arts degree in Economics/Finance from Douglass College/Rutgers University. She is also a member of PLUS.

Prior to joining Jamison Ms. Peele was Assistant Vice President at CNA Insurance Companies where she established and managed an Open Brokerage Miscellaneous Professional Liability Division.

Ms. Peele was also Assistant Vice President at American International Group where she was in charge of the management of an eighty-five million dollar division of Miscellaneous Professional Liability business.

Deena M. Johnson

Vice President

Deena M. Johnson began her career at Jamison in 1989 as a Word Processor. Over her tenure she has been responsible for the servicing and marketing of various professional liability coverage lines, including but not limited to lawyers professional liability. 


Having recently join the Brokerage team, Deena is responsible for working with our large law firm clients on a day-to-day basis. Deena handles firms located on the east coast and works with General Practice firms as well as Intellectual Property firms.


Deena has an Associate Degree from Caldwell College, Caldwell, NJ. Prior to joining the Jamison Organization, Deena worked in the Engineering Department of Travelers Insurance Company in Whippany, NJ assisting the Engineers with insurance inspection of Boiler and Machinery. Deena is licensed in Property, Casualty, Health and Surplus Lines in New Jersey.

Jamison Special Risks

John P. Ferreira

Executive Vice President

John Ferreira is an Executive Vice President of Jamison Special Risk, Inc. and Chamber Insurance Agency Services. John has more than 26 years of experience within the insurance industry.

As Executive Vice President, John is responsible for the Management and Operations of Jamison Special Risk, Inc. and Chamber Insurance Agency Services’ various insurance programs and products. These insurance programs and products consists of our national TankGuard Environmental program, Workers Compensation products, Property Guard Insurance Program (All Risk Property w/catastrophe perils), Environmental Products, Miscellaneous and Professional insurance programs and various Small Business insurance products.

John’s responsibilities include the development, implementation, administrative, underwriting and marketing of the firm’s new and existing insurance programs and products. In addition, John is responsible for the various program authorities and managing the relationships with our markets. He is also responsible for market coordination, implementation of internal procedures, guidelines, the training of personnel and management of professional staff.

John was also responsible for the Management and Operation of the firms Professional Liability Insurance Programs, which included Lawyers Professional Liability, Accountants Professional Liability and Judicial Professional Liability.

John also has experience as a claims liaison and underwriting insurance programs for the firm’s professional liability and program business. John has been with Herbert L. Jamison & Co., LLC (the parent company of Chamber Insurance) and Chamber Insurance Agency Services since 1988.

Prior to joining Jamison & Chamber, John was a litigation examiner at Liberty Mutual Insurance Company with responsibilities of handling complex claims and mediation/arbitration hearings.

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