HORNSTEIN, PLATT AND ASSOCIATES
HORNSTEIN, PLATT AND ASSOCIATES is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1538277306, based in Philadelphia, PA. The organization lists 5 taxonomy classifications, with Professional Counselor recorded as primary.
Getting there
The practice address on file is 255 S 17TH ST SUITE 1405, Philadelphia, PA 19103. 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 |
|---|---|---|
| PC002871 | PA | Professional Counselor |
| PC002792 | PA | Professional Counselor |
| PS006265L | PA | Counseling Psychologist |
| PS007367L | PA | Psychologist |
| CW013863 | PA | Clinical Social Worker |
| CW015028 | PA | Clinical Social Worker |
| MF000406 | PA | Marriage & Family Therapist |
| PC003678 | PA | Professional Counselor primary |
This provider holds licence PC002871 issued in PA. 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 Professional covers
Definition to come... NUCC Health Care Provider Taxonomy, code 101YP2500X
All registered taxonomy codes
This provider registers 8 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 101YP2500X | Professional Counselor Professional | PC002871 | PA | |
| 101YP2500X | Professional Counselor Professional | PC002792 | PA | |
| 103TC1900X | Counseling Psychologist Counseling | PS006265L | PA | |
| 103T00000X | Psychologist | PS007367L | PA | |
| 1041C0700X | Clinical Social Worker Clinical | CW013863 | PA | |
| 1041C0700X | Clinical Social Worker Clinical | CW015028 | PA | |
| 106H00000X | Marriage & Family Therapist | MF000406 | PA | |
| 101YP2500X | Professional Counselor Professional | PC003678 | PA | primary |
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-2 identifies an organization — a clinic, hospital, group practice, laboratory, or supplier. Individual clinicians working there hold their own NPI-1 numbers separately, so a bill may reference both.
| NPI | 1538277306 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | Aug 29, 2006 |
| Last updated | Sep 11, 2025 |
| Status | Active |
| Practice address |
255 S 17TH ST SUITE 1405 Philadelphia, PA 19103 (215) 732-6308 Fax (215) 732-8240 |
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 | 5 | 3 | 8 | 2 | 7 | 7 | 3 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 5 | 6 | 8 | 4 | 7 | 5 | 3 | 0 |
Sum = 64 · next multiple of 10 = 70 · check digit = 6 · actual last digit = 6
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.