Gail Lencz, PSY.D.
Gail Lencz, PSY.D. is a Forensic Psychologist in New York, NY, registered under NPI 1235291030. This provider registers 4 separate taxonomy codes, which usually means they practise across more than one recognised specialty. NPPES records them as a sole proprietor, meaning the practice is not incorporated as a separate legal entity.
Getting there
The practice address on file is 654 MADISON AVE SUITE 1905, New York, NY 10021. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| 013707 | NY | Forensic Psychologist primary |
| 013707 | NY | Adult Development & Aging Psychologist |
| 013707 | NY | Clinical Psychologist |
| 013707 | NY | Psychologist |
This provider holds licence 013707 issued in NY. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
This NPI does not appear in the PECOS Medicare enrolment file. Providers who do not bill Medicare — or who bill only through a group's enrolment — will not appear here. It is not a sign of any problem with the registration.
What Forensic covers
A psychologist whose specialty is characterized by activities primarily intended to provide professional psychological expertise within the judicial and legal systems. NUCC Health Care Provider Taxonomy, code 103TF0200X
All registered taxonomy codes
This provider registers 4 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 103TF0200X | Forensic Psychologist Forensic | 013707 | NY | primary |
| 103TA0700X | Adult Development & Aging Psychologist Adult Development & Aging | 013707 | NY | |
| 103TC0700X | Clinical Psychologist Clinical | 013707 | NY | |
| 103T00000X | Psychologist | 013707 | NY |
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1235291030 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Dec 15, 2006 |
| Last updated | Sep 11, 2025 |
| Status | Active |
| Sole proprietor | Yes |
| Credential | PSY.D. |
| Practice address |
654 MADISON AVE SUITE 1905 New York, NY 10021 (917) 957-4245 Fax (646) 349-2780 |
| Other identifiers |
P2753984
· Other (NY) |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 2 | 3 | 5 | 2 | 9 | 1 | 0 | 3 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 2 | 6 | 5 | 4 | 9 | 2 | 0 | 6 |
Sum = 60 · next multiple of 10 = 60 · check digit = 0 · actual last digit = 0
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.