John Randall Siejak
John Randall Siejak is a Pharmacist provider (Pharmacist) practicing in Buffalo, NY, registered in the NPPES registry with NPI 1508182254 since 2010. Practices at Caring Enterprises, Inc (listed at the same practice address in NPPES).
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1508182254 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | John Randall Siejak |
| Sex | Male |
| Practice address | 726 EXCHANGE ST, SUITE 310, Buffalo, NY, 14210 |
| Phone | 7168598222 |
| Enumeration date | 2010-04-20 |
| Last updated in NPPES | 2010-04-20 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 183500000X | Pharmacist | Primary | 052728 | NY |
Copy-ready billing details
Provider: John Siejak NPI: 1508182254 Taxonomy: 183500000X (Pharmacist) Address: 726 EXCHANGE ST, SUITE 310, Buffalo, NY, 14210
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1568430700 | Caring Enterprises, Inc | Organization | Home Health Agency | Buffalo, NY |
| 1184764854 | Darren Ferer | Individual | Pharmacist | Buffalo, NY |
| 1659657468 | Emilie Tothero | Individual | Social Worker | Buffalo, NY |
| 1023376472 | Heather Link | Individual | Maternal & Fetal Medicine Physician | Buffalo, NY |
| 1881932218 | Lynn Melisz | Individual | Pediatric Nurse Practitioner | Buffalo, NY |
| 1801342068 | Lisa Haase | Individual | Family Nurse Practitioner | Buffalo, NY |
Verify this record
Cross-check NPI 1508182254 against the authoritative CMS record: view John Randall Siejak on the official NPPES registry .
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty. Read the full guide or validate an NPI number.
Frequently asked questions
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2010-04-20.