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Current Employers
Cetera Investment Advisers Llc

1450 American Lane 6Th Floor, Suite 650, Schaumburg, IL 60173-2096 • United States

Current Registrations

AuthorityCategoryStatusDate
NY RA APPROVED 2025-09-05
FL RA APPROVED 2025-08-14
  • NY RA
    APPROVED
    Since 2025-09-05
  • FL RA
    APPROVED
    Since 2025-08-14

Branch Locations

46 Rt 25A Suite 10, East Setauket, NY 11733 • United States

9045 Strada Stell Court 301, Naples, FL 34109 • United States

Disclosures

1 disclosure category reported Yes on this SEC record. Read each Yes below, then review the firm’s Form ADV Item 11 guide for how disclosure questions work.

  • Regulatory action No
  • Criminal No
  • Bankruptcy No
  • Civil judicial No
  • Bond No
  • Judgment / lien No
  • Investigation No
  • Customer complaint Yes
  • Termination No
Employment History
OrganizationCityStateFromTo
Lpl Financial Llc Port Jefferson NY 10/2010 10/2024
Demertzis Wealth Management, Inc. East Setauket NY 01/2011 Present
Avantax Investment Services Inc. East Setauket NY 10/2024 09/2025
Avantax Advisory Services East Setauket NY 10/2024 09/2025
Avantax Insurance Agency, Llc East Setauket NY 10/2024 09/2025
Cetera Investment Advisers Llc Schaumburg IL 07/2025 Present
Cetera Wealth Services, Llc Naples FL 09/2025 Present
Cetera Investment Advisers Llc East Setauket NY 09/2025 Present
  • 10/2010 → 10/2024
    Port Jefferson, NY
  • 01/2011 → Present
    Demertzis Wealth Management, Inc.
    East Setauket, NY
  • 10/2024 → 09/2025
    Avantax Investment Services Inc.
    East Setauket, NY
  • 10/2024 → 09/2025
    Avantax Advisory Services
    East Setauket, NY
  • 10/2024 → 09/2025
    Avantax Insurance Agency, Llc
    East Setauket, NY
  • 07/2025 → Present
    Schaumburg, IL
  • 09/2025 → Present
    Cetera Wealth Services, Llc
    Naples, FL
  • 09/2025 → Present
    East Setauket, NY
Previous Registrations
  • 2024-10-02 → 2025-09-05
    Avantax Advisory Services
    Naples, FL
    East Setauket, NY
    Dallas, TX
  • 2010-11-02 → 2024-10-08
    East Setauket, NY
    Mooresville, NC
  • 2009-12-11 → 2010-10-29
    Chase Investment Services Corp.
    Huntington, NY
    Smithtown, NY
    Setauket, NY
    East Setauket, NY
    Garden City, NY
    Port Jefferson, NY
Other Businesses

1. ACTOR POSITION: ACTOR NATURE: My current project is Mob Mentality an Amazon Prime fictional show about organized crime INVESTMENT RELATED: No NUMBER OF HOURS: 5 SECURITIES TRADING HOURS: 5 START DATE: 07/28/2024 ADDRESS: 144 Hamlet Dr, Mount Sinai NY 11766, United States DESCRIPTION: learn the script act out the scrip prepare for the scrip go to filming locations 2. DEMERTZIS WEALTH MANAGEMENT INC. POSITION: Share holder NATURE: I will move over commissions needed to pay office expenses from doing Avantax business to this entity , Demertzis Wealth Management , Inc. INVESTMENT RELATED: No NUMBER OF HOURS: 1 SECURITIES TRADING HOURS: 1 START DATE: 01/05/2011 ADDRESS: 46 RT 25 A, Suite 10, East Setauket NY 11733, United States DESCRIPTION: Pay rent, Pay registration fees, pay advertising fees and operational costs

Exams
CodeExamDate
S65 Uniform Investment Adviser Law Examination 2025-01-22
S66 Uniform Combined State Law Examination 2009-12-07
S63 Uniform Securities Agent State Law Examination 1996-03-18
  • S65 Uniform Investment Adviser Law Examination
    2025-01-22
  • S66 Uniform Combined State Law Examination
    2009-12-07
  • S63 Uniform Securities Agent State Law Examination
    1996-03-18
Other Names
  • John S Demertzis
  • John Demertzis

View on SEC IAPD

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