What is John Preston's NPI number?

John Preston's National Provider Identifier (NPI) is 1912851452, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is John Preston's specialty?

John Preston is listed in the NPPES registry with a primary specialty of Registered Nurse (Nursing Service Providers).

Where is John Preston located?

John Preston's practice location on file with NPPES is 330 Moss St, Chula Vista, CA 91911-2005.

What is John Preston's phone number?

The practice phone number listed in the NPPES registry for John Preston is (619) 585-4221.

Is John Preston's NPI active?

Yes — John Preston's NPI (1912851452) is active in the NPPES registry as of the last update on 2026-02-23.

IndividualActive

John Preston, RN

NPI 1912851452 · Registered Nurse · Chula Vista, CA

John Preston, RN is a Registered Nurse provider in Chula Vista, CA (NPI 1912851452).

Provider details

NPI number: 1912851452
Entity type: Individual
Primary specialty: Registered NurseNursing Service Providers
Credential: RN
Sex: Male
Sole proprietor: Yes
License: 95220900 (CA)

Specialties & taxonomies

Registered NursePrimary163W00000XLicense 95220900 (CA)
Nursing Service Providers

Profile Score

Established profile(53/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
Under 1 yr in registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
1 documented practice location

Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

Practice location

330 Moss St

Chula Vista, CA 91911-2005

Phone: (619) 585-4221

Street-level locationGet directions

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Mailing address