Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. C Johnston
Neurology Physician in Helotes, TX · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1700080330
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name Dr. C Johnston
Sex Male
Practice address 11844 Bandera Rd, No. 705, Helotes, TX, 78023
Phone (210) 695-2766
Enumeration date Jun 14, 2007
Last updated in NPPES Jul 11, 2007
Taxonomy & licenses
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 is the NPI number for C Johnston?
The National Provider Identifier (NPI) for C Johnston is 1700080330, a Type 1 (individual) record in the CMS NPPES registry.
Where does C Johnston practice?
The practice location on file with NPPES is in Helotes, TX. Providers can have multiple locations; NPPES lists the primary practice address.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-11.