Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Mr. John Charles Preston IV, RN

Individual provider Registered Nurse · NPI 1912851452

Mr. John Charles Preston IV, RN is a Registered Nurse in Chula Vista, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2026
What do these letters mean?
RN — Registered Nurse
A licensed nurse who completed a nursing degree and passed the NCLEX-RN examination.

See every abbreviation used in this directory →

Practice location Address checks out

330 Moss St
Chula Vista, CA 91911-2005
Phone: (619) 585-4221
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Registered Nurse (primary) Taxonomy 163W00000X · Licence 95220900 (CA)

Record details

NPI number1912851452
Entity typeIndividual (Type 1)
GenderMale
Credentials RN
Sole proprietorYes
NPI enumeratedFebruary 23, 2026
Last updated in NPPESFebruary 23, 2026
Certification dateFebruary 23, 2026

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