Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Katherine Anne Johnston, RPH

Pharmacist in San Antonio, TX · enumerated 2010 · practices at H-E-B, Lp.

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

National Provider Identifier

1811200504

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Registry record

Entity type Individual (Type 1)

Name Mrs. Katherine Anne Johnston

Credential RPH

Sex Female

Practice address 10718 Potranco Rd, San Antonio, TX, 78251

Phone (210) 681-2301

Fax (210) 681-5736

Enumeration date Jul 22, 2010

Last updated in NPPES Jul 22, 2010

Taxonomy & licenses

183500000X Pharmacist Pharmacy Service Providers · License 34488 (TX) 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

What is the NPI number for Katherine Johnston?

The National Provider Identifier (NPI) for Katherine Johnston is 1811200504, a Type 1 (individual) record in the CMS NPPES registry.

Where does Katherine Johnston practice?

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

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-07-22.