Mark E Olson, RPH
Mark E Olson is a Pharmacist provider (Pharmacist) practicing in Sebastopol, CA, registered in the NPPES registry with NPI 1831224468 since 2007. The credential RPH stands for Registered Pharmacist.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1831224468 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Mark E Olson |
| Credential | RPH |
| Sex | Male |
| Practice address | 218 N MAIN ST, Sebastopol, CA, 95472 |
| Phone | 7078293007 |
| Fax | 7078295637 |
| Enumeration date | 2007-02-23 |
| Last updated in NPPES | 2007-07-08 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 183500000X | Pharmacist | Primary | 46825 | CA |
RPH — Registered Pharmacist: A licensed pharmacist registered with a state board of pharmacy. About the RPH credential
Copy-ready billing details
Provider: Mark Olson, RPH NPI: 1831224468 Taxonomy: 183500000X (Pharmacist) Address: 218 N MAIN ST, Sebastopol, CA, 95472
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1982932943 | Marny Guangco | Individual | Pharmacist | Sebastopol, CA |
| 1023486669 | Eunhye Kwon | Individual | Pharmacist | Sebastopol, CA |
| 1518477801 | Bumsoo Kim | Individual | Pharmacist | Sebastopol, CA |
| 1245933456 | Barbara Jason | Individual | Pharmacy Technician | Sebastopol, CA |
| 1922702836 | Areen Sawaged | Individual | Pharmacist | Sebastopol, CA |
Verify this record
Cross-check NPI 1831224468 against the authoritative CMS record: view Mark E Olson 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
What is the NPI number for Mark Olson?
Where does Mark Olson practice?
Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-07-08.