PlainAttorney Register file of Sep 29, 2026 · NY Office of Court Administration, via data.ny.gov

William John Muller

On the New York attorney register since 2003 · office in Mineola, NY

PlainAttorney’s reading of the public register file, not a court record.

Registration No.
4148615
Admitted
2003 · Second Department
Status
was Due to re‑register now Delinquent
Next registration
Nov 2027

William John Muller is delinquent on the New York attorney register file of Sep 29, 2026. Admitted in 2003 in the Second Department, with an office in Mineola, NY; next registration due Nov 2027. The Aug 6, 2026 file listed this registration as due to re‑register. The month shown is the next cycle’s; the delinquency concerns an earlier registration the register did not receive.

What this status means on the register

On the register, “Delinquent” means the attorney has a registration the register shows as due and not received. Under the rule a failure to register results in referral to the Appellate Division for disciplinary action; the register does not show whether a given attorney was referred.

  1. was Due to re‑register now Delinquent changed since the Aug 6, 2026 file
  2. Due to re‑register unchanged
  3. Due to re‑register the first file we hold

A change of standing between the 3 files of the last twelve months is struck through in red; the routine birthday cycle is not.

Source: NY Office of Court Administration, attorney registration file (data.ny.gov, dataset eqw2-r5nb), downloaded Sep 29, 2026; the Jul 3, 2026 and Aug 6, 2026 files for the history.

Where this record sits on the register

William John Muller studied at Maurice A. Deane School of Law at Hofstra University (the register spells it “HOFSTRA”). 2,378 of its 11,234 living graduates on the register were admitted in the 2000s, as William John Muller was.

Same law school
11,234living graduates; 92.1% registered (current or due), against 87.1% overall
Office in Mineola, NY
1,094living registrants

Of the 1,094 living registrants with an office in Mineola, NY, 582 were admitted before 2003 and 487 after.

Source: NY Office of Court Administration, attorney registration file (data.ny.gov, dataset eqw2-r5nb), downloaded Sep 29, 2026; living registrants only.

Questions this record leads to

  1. Maurice A. Deane School of Law at Hofstra University graduates on the register11,234 living, 92.1% registered.
  2. Attorneys with an office in Mineola, NY1,094 living registrants give an office there.
  3. Nassau County’s registered bar9,622 currently registered, 6.92 per 1,000 residents.
  4. Admitted in 20038,250 people admitted in 2003 are on the register, 2,426 of them through the Second Department.
  5. Every registration that reads “Delinquent”15,500 on the register file of Sep 29, 2026, by decade of admission.
  6. How to complain about a New York lawyerThe grievance committee for each county, and what it can do.

How to confirm it officially

For a statement of William John Muller’s standing, contact the Attorney Registration Unit of the NY Office of Court Administration (nycourts.gov/attorneys), or ask the Appellate Division, Second Department, which admitted William John Muller in 2003. A complaint about this attorney would go to the Second Department’s Grievance Committee for the Tenth Judicial District, which covers Nassau County, where the register places the office.

This page reads the register file of Sep 29, 2026, and the court system’s own search can be newer; the register shows only the current value, so a suspension that ended before the files we hold, or a censure, leaves no trace here (Appellate Division decisions are published through the court system’s Law Reporting Bureau).

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