New York attorney record
John Charles Koster
John Charles Koster is an attorney registered with the NYS Office of Court Administration (OCA) Attorney Registration Unit under bar number 1019835, admitted in 1969. The current public license status is "Delinquent" as of 2026-06-13.
License status of record is inactive.
This attorney is on the roster but the current status (inactive) is not active good standing. That is a status, not a finding of misconduct — but it means they may not currently be authorized to take on your matter.
A summary of the public record — not a rating of skill, not a recommendation, not legal advice.
Experience vs. active New York attorneys
State median: 20 yrs
57 yrs admitted — more experience than ~100% of active New York attorneys.
Years since admission, active New York attorneys with a published admission year (n = 333,133). This attorney's band is highlighted.
License & registration
| Full name | John Charles Koster |
|---|---|
| Bar / registration number | 1019835 |
| License status | Inactive official status of record: “Delinquent” |
| Admission year | 1969 |
| Law school | UNIVERSITY OF MICHIGAN |
| Business location | Sag Harbor, NY |
| Firm | Not on record |
| Discipline standing | No disbarment or suspension is reflected in the current public status. Itemized disciplinary orders are not yet integrated for New York; 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: NYS Office of Court Administration (OCA) Attorney Registration Unit — official attorney record. As of 2026-06-13 (last roster ingest).
Frequently asked questions
Is John Charles Koster a licensed attorney in New York?
John Charles Koster is registered with the NYS Office of Court Administration (OCA) Attorney Registration Unit under bar number 1019835. The current public license status of record is "Delinquent" as of 2026-06-13.
Has John Charles Koster been disbarred or suspended?
No disbarment or suspension is reflected in John Charles Koster's current public license status of record per the NYS Office of Court Administration (OCA) Attorney Registration Unit.
What is John Charles Koster's bar number?
John Charles Koster's New York bar/registration number is 1019835, assigned by the NYS Office of Court Administration (OCA) Attorney Registration Unit. A bar number is the most reliable way to confirm you have the right attorney, especially for common names.
When was John Charles Koster admitted to practice law?
John Charles Koster was admitted in 1969 — about 57 years since admission per the NYS Office of Court Administration (OCA) Attorney Registration Unit. Law school of record: UNIVERSITY OF MICHIGAN.
Where is John Charles Koster's law office?
The NYS Office of Court Administration (OCA) Attorney Registration Unit record lists a business location of Sag Harbor, NY for John Charles Koster. Phone and email are not published in the public roster.
For attorneys
Is this your record?
Claim it to request corrections or add your practice details. Submit your info and we'll email you the verification steps right away — our team reviews claims within 1–2 business days.
This site republishes official public records and is not legal advice, a lawyer referral service, or a consumer reporting agency. Information here may not be used to make decisions about employment, tenancy, or credit (FCRA). Records are shown as published by their official sources and may contain errors or be out of date; consult the linked official source to verify. To correct or dispute a record, contact the licensing authority of record.