Ken Diehl
Cornerstone Financial Planning, Inc. · Gaithersburg, Maryland
Ken Diehl is a fee-only financial advisor at Cornerstone Financial Planning, Inc. in Gaithersburg, Maryland, who holds the BS, CFP and CPA credentials.
Questions about Ken
Is Ken Diehl a fee-only financial advisor?
Yes. Ken Diehl is listed in the NAPFA directory (NAPFA admits only fee-only advisors). SEC records as of October 27, 2026 show no broker registration and no commission compensation reported by Ken's firm.
How does Ken Diehl charge for financial advice?
Ken Diehl charges an ongoing planning fee.
Where is Ken Diehl based?
Ken Diehl is based in Gaithersburg, Maryland.
What credentials does Ken Diehl hold?
Ken Diehl holds the BS, CFP and CPA credentials.
Is Ken Diehl registered with the SEC?
Yes. Ken Diehl is registered as an investment adviser representative in MD (CRD 4566943), per SEC Investment Adviser Public Disclosure data as of October 27, 2026.
How do I contact Ken Diehl?
Through Ken Diehl's website, cornerstonefinancialplanning.com.
What these terms mean: fee-only · fiduciary · CFP · CRD number · all terms
The full record
| Firm | Cornerstone Financial Planning, Inc. |
|---|---|
| Based in | Gaithersburg, Maryland |
| Fee model | Ongoing planning fee |
| Credentials | BS · CFP · CPA |
| SEC registration | Investment adviser representative in MD · CRD 4566943 |
| Disclosures | None reported |
| Website | cornerstonefinancialplanning.com |
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Other fee-only advisors in Gaithersburg
Where this information comes from
- NAPFA directory listing : NAPFA admits only fee-only advisors
- Cornerstone Financial Planning, Inc. website : specialties, clients served, and fees, checked October 28, 2026
- SEC Investment Adviser Public Disclosure : registration, exams, and the firm's Form ADV, data as of October 27, 2026
- Directory listing last checked April 21, 2026.
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