Serena Rhianne O’Dierno
On the New York attorney register since 2015 · office in Amherst, NY
PlainAttorney’s reading of the public register file, not a court record.
- Registration No.
- 5297411
- Admitted
- 2015 · Fourth Department
- Status
- Currently registered
- Next registration
- Jul 2027
Serena Rhianne O’Dierno is currently registered on the New York attorney register file of Sep 29, 2026. Admitted in 2015 in the Fourth Department, with an office in Amherst, NY; next registration due Jul 2027. The status is the same in all 3 files we hold.
What this status means on the register
On the register, “Currently registered” means Serena Rhianne O’Dierno has filed the biennial registration the court system requires; the next one is due in Jul 2027.
- Currently registered unchanged
- Currently registered unchanged
- Currently registered the first file we hold
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.
Others who list this employer on the register
8 other attorneys list Cohen Vaughan or one of its other names as their employer on the register; 4 of them were admitted before 2015. The 5 whose admission is closest to 2015, earliest first:
| Attorney | Admitted | Status |
|---|---|---|
| Charli Britt Baldinger | 2011 | Currently registered |
| John Winslow Becker | 2015 | Currently registered |
| Robert Salem Smith | 2015 | Currently registered |
| John Pino Marzocchi | 2017 | Currently registered |
| Admir Deljanin | 2022 | Currently registered |
Source: NY Office of Court Administration, attorney registration file (data.ny.gov, dataset eqw2-r5nb), downloaded Sep 29, 2026; employer spellings merged (methodology).
Where this record sits on the register
Serena Rhianne O’Dierno studied at Michigan State University College of Law. 211 of its 498 living graduates on the register were admitted in the 2010s, as Serena Rhianne O’Dierno was.
- Same law school
- 498living graduates; 88.2% registered (current or due), against 87.1% overall
- Office in Amherst, NY
- 189living registrants
Of the 189 living registrants with an office in Amherst, NY, 149 were admitted before 2015 and 36 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
- Michigan State University College of Law graduates on the register498 living, 88.2% registered.
- Attorneys with an office in Amherst, NY189 living registrants give an office there.
- Erie County’s registered bar4,149 currently registered, 4.36 per 1,000 residents.
- Admitted in 20158,867 people admitted in 2015 are on the register, 364 of them through the Fourth Department.
- Every registration that reads “Currently registered”286,911 on the register file of Sep 29, 2026, by decade of admission.
- What a New York lawyer may chargeThe court rules on fees, retainers and fee disputes, each cited.
How to confirm it officially
For a statement of Serena Rhianne O’Dierno’s standing, contact the Attorney Registration Unit of the NY Office of Court Administration (nycourts.gov/attorneys), or ask the Appellate Division, Fourth Department, which admitted Serena Rhianne O’Dierno in 2015. A complaint about this attorney would go to the Fourth Department’s grievance committee, which covers Erie 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).