William Chun, RPH
Pharmacist · Vista, CA
William Chun, RPH is a pharmacist with a practice address in Vista, California, and NPI 1093187460, issued on Oct 26, 2015. Check the license (California 30452, 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
- William Chun
- Credential
- RPH
- Primary taxonomy
- Pharmacist 183500000X
- License number
- 30452 CA
Self-reported in NPPES; status is on the state search - Practice location
- 635 S Melrose Dr, Vista, CA 92081
- Phone
- (760) 643-3904
- Enumerated
- Oct 26, 2015
- Record last updated
- Oct 26, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (760) 732-3410
- Entity
- Type 1 · individual
8 nearest pharmacist records → All 32,533 in California → Look up another NPI →
Also registered at 635 S Melrose Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Patricia Aguilera, PHARM.D.Pharmacist1255703658
- Cheng-Hsien Lee, PHARMDPharmacist1043861248
- Aimee Nganso, PHARMDPharmacist1023404993
- Jessalynn NguyenPharmacist1750815130
Verify William Chun in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 30452Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
William Chun among 32,533 pharmacist records in California
William Chun, RPH is one of 32,533 pharmacist records with a practice address in California. 15% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2015, is newer than 41% of them.
- NPI issued2015 · 41% of these records are older, 53% newer
- In a Medicare fileNo · 15% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2015 · 76% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 183500000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
68 pharmacist records list a practice address in Vista
They are 68 of the 2,017 NPPES records with a practice address in Vista, and 32,533 pharmacist records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 32,533 in California → Every provider in Vista → Pharmacist nationwide →
The 8 pharmacist records with the nearest ZIP codes
- Patricia Aguilera, PHARM.D.Vista, CA 920811255703658
- Lillie Ayala, PHARM.D.Vista, CA 920811487948345
- Patricia Baca, PHARM.DVista, CA 920811104191840
- Heidi Cevallos, PHARMDVista, CA 920811154798908
- Lynne Drake, PHARM.D.Vista, CA 920811124328612
- Brittany LeVista, CA 920811356710248
- Colleen Mackay, PHARM.D.Vista, CA 920811588036073
- Brandy Messina, RPHVista, CA 920811225310428
Common questions
What is William Chun, RPH's NPI number?
William Chun, RPH's National Provider Identifier (NPI) is 1093187460, issued on Oct 26, 2015. An NPI identifies a provider in billing; it is not a license.
Where is William Chun, RPH located?
The NPPES record lists a practice address at 635 S Melrose Dr, Vista, CA, 92081. Phone: (760) 643-3904. Providers update this record themselves, so call before visiting.
How can I verify William Chun, RPH's license?
NPPES lists California license number 30452, 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.