About Johnson Lambert LLP
<p>Founded in 1986, Johnson Lambert LLP built its practice around audit work for specialized industries, including insurance and nonprofit organizations.</p> <p>Based in Falls Church in Northern Virginia near Washington, D.C., the firm provides audit, tax, and advisory services and is listed in this directory as an auditor for retirement plan needs.</p> <p>The employee benefit plan audit practice is led by Diane Walker (also known as Diane Marotta Walker), Partner in Charge of the Employee Benefit Plan Audit Practice and Quality Control. She oversees quality control across engagements and is a member of the AICPA. A key differentiator is the firm’s focus on specialized services positioned as an alternative to larger national firms.</p> <p>Organizations looking for experienced <a href="/auditors/401k">401(k) auditors</a> can use Johnson Lambert LLP for audit and assurance work as well as related tax and consulting support.</p> <ul> <li>CPA firm founded in 1986</li> <li>Office: Falls Church, Virginia (Washington, D.C. metro area)</li> <li>Services: audit and assurance, tax, and advisory/consulting</li> <li>Industry experience includes insurance and nonprofit organizations</li> <li>Employee Benefit Plan Audit Practice and Quality Control led by Diane Walker (Diane Marotta Walker), AICPA member</li> </ul>
Website: https://www.johnsonlambert.com/
Founded: 1986
Office Locations
- Falls Church, VA
Accreditations & Certifications
- AICPA Member
- AICPA EBPAQC
Audit Statistics (2024)
- Total Plans Audited: 69
- Total AUM Audited: $21.7B
- 401(k): 69 plans, $21.7B AUM
Plans Serviced (2025)
Largest plans where this firm is listed as a service provider (Schedule C) or IQPA (Schedule H) on the most recent filings (From Form 5500).
| Plan | Sponsor | Assets | Participants |
|---|---|---|---|
| MEMORIAL SLOAN KETTERING CANCER CENTER RETIREMENT SAVINGS PLAN | MEMORIAL SLOAN KETTERING CANCER CENTER, NY | $6.4B | 23,511 |
| GEICO 401(K) SAVINGS PLAN | GEICO CORPORATION, DC | $6.2B | 28,209 |
| THE RETIREMENT PLAN FOR GRAHAM HOLDINGS COMPANY | GRAHAM HOLDINGS COMPANY, VA | $3.0B | 6,579 |
| THE GUARDIAN HOME OFFICE EMPLOYEES' RETIREMENT PLA | THE GUARDIAN LIFE INSURANCE COMPANY OF AMERICA, NY | $1.3B | 2,563 |
| MEMORIAL SLOAN KETTERING CANCER CENTER PENSION PLAN | MEMORIAL SLOAN KETTERING CANCER CENTER, NY | $1.2B | 4,279 |
| 401(k) Retirement Plan | Healthcare Sponsor, NY | $1.1B | 4,922 |
| 401(k) Retirement Plan | Manufacturing Sponsor, TN | $944M | 828 |
| 401(k) Retirement Plan | Professional Services Sponsor, PA | $766M | 2,413 |
| 401(k) Retirement Plan | Technology Sponsor, NY | $696M | 535 |
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