The greatest indication of our history of success and track record lies in not what we can say about our firm, but the words of our clients.


  Diapoules and Feinstein CPAs PC helped me cut through the banks’ bureaucratic processing of the 2020 Coronavirus Stimulus Program. If not for Marvin Feinstein’s diligence and perseverance, I might never have received any funds at all. His speedy and concentrated efforts were instrumental in getting me approved within hours of submitting my application to the SBA. Aside from this monumental accomplishment, Marvin is a very knowledgeable CPA who often offers has great ideas for me to implement in my business. He is honest and really cares about the success of his clients.

                                                                           Gary Welikson, President G and G Garments, NYC

Amy and I would like to thank you for a job well done for the 2015 Tax Season. It is a pleasure to work with you and your attention to us is truly appreciated. Your entire team should be commended on a job well done and we remain ever loyal and grateful clients of your firm.

Ben & Amy Sprecher

Rental and Commerical Real Estate

Diapoules & Feinstein CPAs P.C. have been the accountants for our various family businesses since 1989. Jim and his staff are very knowledgeable, friendly and always eager to assist us. Besides handling our business matters very professionally, they have also been very instrumental in our family’s estate planning and the administration of my mother’s estate. We consider them to be our most trusted advisors.

Vivian Negrin, VP Secretary
American Fixture & Display Corp. et al

Bonded Storage, Trucking, Courier

I have been working with Diapoules & Feinstein CPAs P.C. for over 15 years. They have always been helpful, courteous and very attentive to our needs. They went beyond the norm to help us recover from our losses after 9/11 and Sandy. While my business has had many ups and downs. I have always counted on Jim Diapoules and his staff to come through when needed. Their assistance has been invaluable in helping us navigate the economic consequences of our changing industry and tough economic times. We truly value their advice and opinion and highly recommend that they become your accountants.

Yours Truly,
Gary Demsak
GFD Courier Corporation

Plastic Surgeon

Jim Diapoules and Diapoules & Feinstein CPAs P.c. have been our accountants for over 25 years. In our dealings with them we have always been treated as if we were family. Jim and his staff’s help was invaluable when I was operating a successful plastic surgery practice and also in my later ventures. As an example, despite our anxiety, they calmly guided us through two IRS audits that resulted in no additional tax due.
Everyone at Diapoules & Feinstein has always been helpful, friendly and ready to assist us in any matter that may have concerned us. I don’t believe that you could find a more knowledgeable group of accountants. I highly recommend them for any accounting or tax related issues that you may have.

James E.C. Norris, MD

Plastic Surgeon Practice

I first met Marvin Feinstein at a financial meeting in New York City when I was starting my medical practice. It was a great seminar and the beginning of the most important financial relationship of my life.

Before I met Marvin I had an accountant that seemed disinterested in my professional practice and the result was a major problem with the IRS. At Diapoules and Feinstein my experience was totally different. They cared about my success. Marvin did not shy away from a client with a complex financial situation; he embraced the challenge. Through his financial advice, his fund of knowledge, and his business savvy I was able to solve my tax problems and build a million dollar medical practice.

Simply said, the care and service that you will receive at Diapoules and Feinstein is outstanding and I believe that they exemplify the best in the business!

C. Duncan Burnett, MD, FACS
Board Certified Plastic Surgeon


In 2009, our accountant passed away. We then retained Diapoules & Feinstein as our accounting firm. They stepped in and quickly learned our business and the transfer was seamless. They subsequently advised us on our business’ move to Avenel New Jersey from Brooklyn. To save taxes on the gain from the sale of our building we did a like kind exchange of our property. Since they were experienced in like kind exchanges, they worked well with the attorneys and the bank in completing the complicated transaction. In fact, our bank loan officer told me that he was impressed with their work and that Marvin was very thorough and responded quickly to any question he had. When we upgraded our accounting system, Marvin and his staff have been very helpful and have shown a great deal of patience during our training. We always rely on their accounting and tax expertise for good advice. My husband and I highly recommend Diapoules & Feinstein to any business owner.

Frieda Laufer, VP
R. L. Plastics, Inc
R. L. Plastics & Sons, Inc.



I know the pressure you are under right now. I know that it is the same every year. But I want you to take a breath and read this email carefully.

You did a terrific  job on all of the tax filings this year. Like a fine doctor, you are both an expert in your specialty and you have terrific bedside manner. It has been a very challenging time for me because of the fraud that I was victimized by. Having a support team around me that is as professional and excellent in their departments as you and your team are, is indispensable.

Please share my gratitude with your team. Amy and I are very grateful to you for taking responsibility for our accounting needs.

Best wishes,

Ben Sprecher