O'Connor & Drew P.C.

Michael Cosgrove

Principal, CPA, MSM

Michael joined the firm in 2007 and was promoted to Principal in 2017. He manages accounting, auditing and tax services for a wide range of clients working on a variety of client engagements, including audits, reviews, compilations and agreed-upon procedures.

Michael oversees both the tax and assurance components of his engagements. He is an active participant in various administrative functions including recruiting, interviewing, onboarding, etc.

To contact, please email: [email protected]

Areas of Expertise

Automobile Dealerships
Real Estate
Higher Education Institutions
Single Audit Compliance


Masters of Science in Management with Accounting Concentration, Bridgewater State University

Bachelor of Science in Corporate Finance and Accounting, Minor in Law, Bentley University


American Institute of Certified Public Accountants (AICPA)

Massachusetts Society of Certified Public Accountants (MSCPA)


25 Braintree Hill Office Park

Suite 102

Braintree, MA 02184

Additional Locations


Phone:  617-471-1120
Fax:  617-472-7560
Email:  [email protected]


Monday-Friday: 8:00 - 5:00
Saturday & Sunday: Closed