Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Irma Cristina Johnston, PHARMD
Pharmacist in Fulshear, TX · enumerated 2016.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1932650728
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Registry record
Entity type Individual (Type 1)
Name Dr. Irma Cristina Johnston
Credential PHARMD
Sex Female
Practice address 28718 Casen Ranch Ln, Fulshear, TX, 77441
Phone (832) 392-9616
Enumeration date Oct 17, 2016
Last updated in NPPES Jun 18, 2020
Taxonomy & licenses
PHARMD · Doctor of Pharmacy: A licensed pharmacist with a professional doctorate in pharmacy.
About the PHARMD 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.
Frequently asked questions
What specialty is Irma Johnston?
Irma Johnston is registered in NPPES with the primary taxonomy of Pharmacist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-06-18.