Pennsylvania attorney record
John Mercer Masslon, II
John Mercer Masslon, II is an attorney registered with the Disciplinary Board of the Supreme Court of Pennsylvania (Attorney Registration) under bar number 317058. The current public license status is "Active" as of 2026-06-13.
Active license with no disbarment or suspension of record.
The current license status of record is active, and no disbarment or suspension is reflected in the public record we hold.
A summary of the public record — not a rating of skill, not a recommendation, not legal advice.
License & registration
| Full name | John Mercer Masslon, II |
|---|---|
| Bar / registration number | 317058 |
| License status | Active |
| Admission year | Not on record |
| Law school | Not on record |
| Business location | Washington, DC |
| Firm | Keller Postman LLC |
| Discipline standing | No disbarment or suspension is reflected in the current public status. Itemized disciplinary orders are not yet integrated for Pennsylvania; see the official source for the full record. |
Federal court activity
Federal court activity has not been compiled for this attorney yet.
Source & last updated
Source: Disciplinary Board of the Supreme Court of Pennsylvania (Attorney Registration) — official attorney record. As of 2026-06-13 (last roster ingest).
Frequently asked questions
Is John Mercer Masslon, II a licensed attorney in Pennsylvania?
John Mercer Masslon, II is registered with the Disciplinary Board of the Supreme Court of Pennsylvania (Attorney Registration) under bar number 317058. The current public license status of record is "Active" as of 2026-06-13.
Has John Mercer Masslon, II been disbarred or suspended?
No disbarment or suspension is reflected in John Mercer Masslon, II's current public license status of record per the Disciplinary Board of the Supreme Court of Pennsylvania (Attorney Registration).
What is John Mercer Masslon, II's bar number?
John Mercer Masslon, II's Pennsylvania bar/registration number is 317058, assigned by the Disciplinary Board of the Supreme Court of Pennsylvania (Attorney Registration). A bar number is the most reliable way to confirm you have the right attorney, especially for common names.
Where is John Mercer Masslon, II's law office?
The Disciplinary Board of the Supreme Court of Pennsylvania (Attorney Registration) record lists a business location of Washington, DC and the firm Keller Postman LLC for John Mercer Masslon, II. Phone and email are not published in the public roster.
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