Liza Bagdan, PEER COUNSELOR
Liza Bagdan, PEER COUNSELOR is a Peer Specialist in Valley Stream, NY, registered under NPI 1417770645. 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 497 ROCKAWAY AVE, Valley Stream, NY 11581. 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 |
|---|---|---|
| NYCPS-P-4584 | NY | Peer Specialist primary |
This provider holds licence NYCPS-P-4584 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 Peer Specialist covers
Individuals certified to perform peer support services through a training process defined by a government agency, such as the Department of Veterans Affairs or a state mental health department/certification/licensing authority. NUCC Health Care Provider Taxonomy, code 175T00000X
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 | 1417770645 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Nov 5, 2024 |
| Last updated | Nov 5, 2024 |
| Status | Active |
| Sole proprietor | Yes |
| Credential | PEER COUNSELOR |
| Practice address |
497 ROCKAWAY AVE Valley Stream, NY 11581 (718) 845-2621 |
| Mailing address |
6850 ALDERTON ST Rego Park, NY 11374 |
| Other identifiers |
907214704
· 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 | 4 | 1 | 7 | 7 | 7 | 0 | 6 | 4 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 4 | 2 | 7 | 5 | 7 | 0 | 6 | 8 |
Sum = 65 · next multiple of 10 = 70 · check digit = 5 · actual last digit = 5
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.