Sarah Delfina Casillas
Pharmacist · Merced, CA
Sarah Delfina Casillas is a pharmacist with a practice address in Merced, California, and NPI 1265207336, issued on Nov 20, 2023. Check the license (California 88880, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Sarah Delfina Casillas
- Primary taxonomy
- Pharmacist 183500000X
- License number
- 88880 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3142 G St, Merced, CA 95340
- Phone
- (209) 383-9086
- Enumerated
- Nov 20, 2023
- Record last updated
- Nov 20, 2023
- Entity
- Type 1 · individual
Also registered at 3142 G St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Pamela AguilarPharmacy Technician1659033751
- Katherine BelenPharmacist1104115880
- Susan Cao, PHARMDPharmacist1235778184
- Alexa CrownPharmacist1659073328
- Jasmine GarciaPharmacy Technician1740949312
- Tracy Huang, PHARMDPharmacist1982216735
Verify Sarah Delfina Casillas in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 88880Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Most of these Medicare Part D claims are vaccines, 100% of the cost of the top drugs
72 Medicare Part D claims for 61 beneficiaries, against an average of 119 among the 28,524 providers of this specialty who prescribed in Part D. Brand-name drugs were 99% of claims.
Most prescribed
Pharmacies often give vaccines under a standing order that names one clinician, and CMS counts every such claim under that clinician's NPI. These claims are therefore not a measure of this clinician's own prescribing.
- Shingrix32 claims
- Arexvy24 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
64 pharmacist records list a practice address in Merced
They are 64 of the 2,836 NPPES records with a practice address in Merced, and 32,533 pharmacist records in California.
All 64 in Merced → All 32,533 in California → Every provider in Merced →
Other pharmacist records in California
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- Gayatri AachiLivermore, CA1235660754
- Adrian Karlos Aala, PHARMD, RPHHayward, CA1023955499
- Mahshid Aalam, PHARMDLos Angeles, CA1659086155
- Jaleh AaliiveliSan Ramon, CA1336629963
- Cassi Aarvig, RPHTracy, CA1023679941
- Meara Michi AbadOrange, CA1750181178
- Nader Abadier, RPHFontana, CA1326255647
- Samia Abadier, RPHFontana, CA1548742836
- Sandy Abadir, RPHChino Hills, CA1811644412
Common questions
What is Sarah Delfina Casillas's NPI number?
Sarah Delfina Casillas's National Provider Identifier (NPI) is 1265207336, issued on Nov 20, 2023. An NPI identifies a provider in billing; it is not a license.
Where is Sarah Delfina Casillas located?
The NPPES record lists a practice address at 3142 G St, Merced, CA, 95340. Phone: (209) 383-9086. Providers update this record themselves, so call before visiting.
How can I verify Sarah Delfina Casillas's license?
NPPES lists California license number 88880, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Sarah Delfina Casillas prescribe under Medicare Part D?
In 2024, Sarah Delfina Casillas had 72 Medicare Part D claims for 61 beneficiaries; the average among pharmacist prescribers was 119. Part D covers Medicare prescriptions 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. Medicare files from data.cms.gov. 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.