Cathy Do, RPH
Cathy Do is a Pharmacist provider (Pharmacist) practicing in San Marcos, CA, registered in the NPPES registry with NPI 1033532841 since 2014. The credential RPH stands for Registered Pharmacist. Practices at Ralphs Grocery Company (listed at the same practice address in NPPES).
✓ Active NPI ✓ Valid NPI checksum Sole proprietor
| NPI | 1033532841 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Cathy Do |
| Credential | RPH |
| Sex | Female |
| Practice address | San Marcos, CA, 92078 |
| Phone | 7608910618 |
| Fax | 7608910626 |
| Enumeration date | 2014-01-29 |
| Last updated in NPPES | 2026-05-15 |
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 | 66242 | CA |
RPH — Registered Pharmacist: A licensed pharmacist registered with a state board of pharmacy. About the RPH credential
Copy-ready billing details
Provider: Cathy Do, RPH NPI: 1033532841 Taxonomy: 183500000X (Pharmacist) Address: San Marcos, CA, 92078
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1992720593 | Ralphs Grocery Company | Organization | Community/Retail Pharmacy | San Marcos, CA |
| 1922426758 | Julie Kang | Individual | Pharmacist | San Marcos, CA |
| 1770999237 | Lucy Kim | Individual | Pharmacist | San Marcos, CA |
| 1740675776 | Amy Dao | Individual | Pharmacist | San Marcos, CA |
| 1770960379 | Leslie Lebel | Individual | Pharmacist | San Marcos, CA |
| 1154798551 | Douglas Freeling | Individual | Pharmacist | San Marcos, CA |
Verify this record
Cross-check NPI 1033532841 against the authoritative CMS record: view Cathy Do 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 1033532841 active?
How do I verify Cathy Do's NPI record?
Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2026-05-15.