Dr. Sean Patrick Drennan, PHARMD
Dr. Sean Patrick Drennan is a Pharmacist provider (Pharmacist) practicing in Olean, NY, registered in the NPPES registry with NPI 1780291211 since 2020. The credential PHARMD stands for Doctor of Pharmacy.
✓ Active NPI ✓ Valid NPI checksum Sole proprietor
| NPI | 1780291211 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. Sean Patrick Drennan |
| Credential | PHARMD |
| Sex | Male |
| Practice address | Olean, NY, 14760 |
| Phone | 7163732781 |
| Enumeration date | 2020-09-29 |
| Last updated in NPPES | 2020-09-29 |
Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 183500000X | Pharmacist | Primary | 066902 | NY |
PHARMD — Doctor of Pharmacy: A licensed pharmacist with a professional doctorate in pharmacy. About the PHARMD credential
Copy-ready billing details
Provider: Sean Drennan, PHARMD NPI: 1780291211 Taxonomy: 183500000X (Pharmacist) Address: Olean, NY, 14760
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1609893767 | Wal-Mart Stores East Lp | Organization | Community/Retail Pharmacy | Olean, NY |
| 1679665988 | Wal-Mart Stores East, Lp | Organization | Eyewear Supplier | Olean, NY |
| 1992900443 | Amy Halladay | Individual | Pharmacist | Olean, NY |
| 1114103660 | Tracy Marks | Individual | Pharmacist | Olean, NY |
| 1831605187 | Jonathan Jordan | Individual | Optician | Olean, NY |
| 1801303797 | Farhan Guard | Individual | Pharmacist | Olean, NY |
| 1881163095 | Hannah Olds | Individual | Optician | Olean, NY |
Verify this record
Cross-check NPI 1780291211 against the authoritative CMS record: view Dr. Sean Patrick Drennan 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
Is NPI 1780291211 active?
How do I verify Sean Drennan's NPI record?
Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2020-09-29.