Hiroko Horstman
Pharmacist · Marina Del Rey, CA
Hiroko Horstman is a pharmacist with a practice address in Marina Del Rey, California, and NPI 1104112549, issued on Jun 23, 2011. Check the license (California 45270, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Hiroko Horstman
- Primary taxonomy
- Pharmacist 183500000X
- License number
- 45270 CA
Self-reported in NPPES; status is on the state search - Practice location
- 13463 Washington Blvd, Marina Del Rey, CA 90292
- Phone
- (310) 754-2002
- Enumerated
- Jun 23, 2011
- Record last updated
- Jun 23, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (310) 754-2010
- Entity
- Type 1 · individual
8 nearest pharmacist records → All 32,533 in California → Look up another NPI →
Also registered at 13463 Washington Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Karen Brodersen, PHARM.D.Pharmacist1306132824
- Alice JeongPharmacist1295440170
- Doug Nishida, O.D.Optometrist1316003122
- Lindsey Parnell, ODOptometrist1558199026
- Susan RobertsPharmacist1285909556
- Shauna SamuelPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1932599594
Verify Hiroko Horstman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 45270Check 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, 96% of the cost of the top drugs
149 Medicare Part D claims for 128 beneficiaries, against an average of 119 among the 28,524 providers of this specialty who prescribed in Part D. Brand-name drugs were 96% 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.
- Shingrix41 claims
- Abrysvo34 claims
- Arexvy31 claims
- Boostrix Tdap21 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.
Hiroko Horstman among 32,533 pharmacist records in California
Hiroko Horstman 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. Its NPI, issued in 2011, is newer than 18% of them.
- NPI issued2011 · 18% of these records are older, 72% newer
- In a Medicare fileYes · 15% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2011 · 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).
35 pharmacist records list a practice address in Marina Del Rey
They are 35 of the 711 NPPES records with a practice address in Marina Del Rey, and 32,533 pharmacist records in California.
All 32,533 in California → Every provider in Marina Del Rey → Pharmacist nationwide →
The 8 pharmacist records with the nearest ZIP codes
- Karen Brodersen, PHARM.D.Marina Del Rey, CA 902921306132824
- Jill GungapMarina Del Rey, CA 902921407132541
- Megan Hines, PHARMDMarina Del Rey, CA 902921568703718
- James Kim, PHARMDMarina Del Rey, CA 902921083990725
- Edward LabbanMarina Del Rey, CA 902921487051041
- Jacklyn LlarenasMarina Del Rey, CA 902921598159246
- Sarah Mansour, PHARM.D.Marina Del Rey, CA 902921730452822
- Susan RobertsMarina Del Rey, CA 902921285909556
Common questions
What is Hiroko Horstman's NPI number?
Hiroko Horstman's National Provider Identifier (NPI) is 1104112549, issued on Jun 23, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Hiroko Horstman located?
The NPPES record lists a practice address at 13463 Washington Blvd, Marina Del Rey, CA, 90292. Phone: (310) 754-2002. Providers update this record themselves, so call before visiting.
How can I verify Hiroko Horstman's license?
NPPES lists California license number 45270, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Hiroko Horstman prescribe under Medicare Part D?
In 2024, Hiroko Horstman had 149 Medicare Part D claims for 128 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.