Cathy Do, RPH
Pharmacist · San Marcos, CA
Cathy Do, RPH is a pharmacist with a practice address in San Marcos, California, and NPI 1033532841, issued on Jan 29, 2014. Check the license (California 66242, as entered in NPPES) with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Cathy Do
- Credential
- RPH
- Primary taxonomy
- Pharmacist 183500000X
- License number
- 66242 CA
Self-reported in NPPES; status is on the state search - Practice location
- 306 S Twin Oaks Valley RD, San Marcos, CA 92078
- Phone
- (760) 891-0618
- Enumerated
- Jan 29, 2014
- Record last updated
- May 15, 2026
- Fax
- (760) 891-0626
- Entity
- Type 1 · individual
Also registered at 306 S Twin Oaks Valley RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Cathy Do in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 66242Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96 pharmacist records list a practice address in San Marcos
They are 96 of the 1,985 NPPES records with a practice address in San Marcos, and 32,533 pharmacist records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 96 in San Marcos → All 32,533 in California → Every provider in San Marcos →
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- Mahshid Aalam, PHARMDLos Angeles, CA1659086155
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- Cassi Aarvig, RPHTracy, CA1023679941
- Meara Michi AbadOrange, CA1750181178
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- Samia Abadier, RPHFontana, CA1548742836
- Sandy Abadir, RPHChino Hills, CA1811644412
Common questions
What is Cathy Do, RPH's NPI number?
Cathy Do, RPH's National Provider Identifier (NPI) is 1033532841, issued on Jan 29, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Cathy Do, RPH located?
The NPPES record lists a practice address at 306 S Twin Oaks Valley RD, San Marcos, CA, 92078. Phone: (760) 891-0618. Providers update this record themselves, so call before visiting.
How can I verify Cathy Do, RPH's license?
NPPES lists California license number 66242, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.