10-15 Team

9 Coates Drive, Suite 3

Goshen,

NY

10924

About the 10-15 Team

With the 10-15 Team, we believe wealth is more than just numbers on a balance sheet — it’s about having the freedom to pursue your goals and live life on your own terms. 

Our team is built on a foundation of trust, personalized service, and deep financial knowledge. We take pride in forming lasting relationships with our clients, offering tailored strategies that reflect your unique values and aspirations.

Whether you're planning for retirement, managing investments, navigating multi-generational estate planning, or optimizing your tax strategy, we’re here to guide you every step of the way. Our comprehensive approach to financial planning ensures that every decision supports your long-term vision.

We act in your best interest — always. Your financial well-being is our top priority.

Let’s start the conversation. Book an introductory call today to discover how the 10-15 Team can help you build a future that’s truly your own.

Managing and Advisory Team

Deborah DeMatteo

CFP®, RICP®
Senior Vice President, Financial Advisor

Brian Tegnander

RICP®
Vice President, Financial Advisor

Adam Seifts

CFP®
Vice President, Financial Advisor

Michael DeMatteo, Jr.

CPWA®, RICP®
Vice President, Financial Advisor

Roundtable™ Team of Specialists

Andrew Spanos

Portfolio Manager

Evan Wongkittiroch

FPQP™
Investment Operations Specialist

Joe Samuelson

Financial Advisor

Client Service Team

Matt Bishop

FPQP®
Financial Advisor Assistant

Erica Zawacki

Senior Client Service Manager

Mairead Harte

Senior Client Service Manager

Donna Egan

Client Service Manager

Laura Hack

Client Service Manager

Alexa Belmont

Client Service Manager

Resources from our team

Topic
Newsroom
MINNEAPOLIS, Minn., Oct 8, 2020 — Wealth Enhancement Group, an independent wealth management firm that oversees $20.3 billion in client assets*, announced today that it has acquired 10-15 Associates, an independent registered investment adviser (RIA) headquartered in Goshen, NY with approximately $923 million in total client assets**. 10-15 Associates has additional offices in Fishkill and Tarrytown, NY.
12/10/2021

Team locations

Goshen, NY
9 Coates Drive, Suite 3, Goshen, New York, 10924
Fishkill, NY
1 Summit Court, Suite 203, Fishkill, New York, 12524
Tarrytown, NY
120 White Plains Road Suite 405, Tarrytown, New York, 10591
Estero, FL
23190 Fashion Drive Suite 201/202, Estero, Florida, 33928

Current Clients

Contact this team via email or phone at the top of the page.

Your complimentary consultation

During your no-obligation meeting, you will:

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Get a second opinion on your financial situation

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Be matched with a Wealth Enhancement advisor

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Begin crafting a comprehensive financial plan

Already a client of Wealth Enhancement? Schedule your consultation in your client portal.

Schedule an initial consultation

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Barron’s: Awarded on 9/12/2025 (Mega RIA). Ranked on assets, revenue, and quality of practice as of 6/30/25. Forbes: Awarded October 2024 for the period of 3/31/23 - 3/31/24. USA Today: Awarded 4/23/25 for the five-year period ending January 2025.