Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. William R. Kosch, RPH

Pharmacist in Redlands, CA · enumerated 2008 · practices at Caremark, L.L.C..

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1801066915

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Registry record

Entity type Individual (Type 1)

Name Mr. William R. Kosch

Credential RPH

Sex Male

Practice address 1127 Bryn Mawr Ave, Redlands, CA, 92374

Phone (800) 225-5967

Fax (909) 799-6462

Enumeration date Mar 4, 2008

Last updated in NPPES Feb 13, 2009

Taxonomy & licenses

183500000X Pharmacist Pharmacy Service Providers · License 36426 (CA) Primary

RPH · Registered Pharmacist: A licensed pharmacist registered with a state board of pharmacy. About the RPH credential

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 → Validate an NPI →

Frequently asked questions

Where does William Kosch practice?

The practice location on file with NPPES is in Redlands, CA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for William Kosch?

The National Provider Identifier (NPI) for William Kosch is 1801066915, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Caremark, L.L.C. Specialty Pharmacy · Redlands, CA NPI 1013998921 Alice Chung Pharmacist · Redlands, CA NPI 1760731483 Gregory Harrington Pharmacist · Redlands, CA NPI 1134571441

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-02-13.