What is Jonathan Lettieri's NPI number?

Jonathan Lettieri's National Provider Identifier (NPI) is 1255293395, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Jonathan Lettieri's specialty?

Jonathan Lettieri is listed in the NPPES registry with a primary specialty of Peer Specialist (Other Service Providers).

Where is Jonathan Lettieri located?

Jonathan Lettieri's practice location on file with NPPES is 10535 Hospital Way, Mather, CA 95655-4200.

What is Jonathan Lettieri's phone number?

The practice phone number listed in the NPPES registry for Jonathan Lettieri is (916) 843-7000.

Is Jonathan Lettieri's NPI active?

Yes — Jonathan Lettieri's NPI (1255293395) is active in the NPPES registry as of the last update on 2025-11-26.

IndividualActive

Jonathan Lettieri, CPSS

NPI 1255293395 · Peer Specialist · Mather, CA

Jonathan Lettieri, CPSS is a Peer Specialist provider in Mather, CA (NPI 1255293395).

Provider details

NPI number: 1255293395
Entity type: Individual
Primary specialty: Peer SpecialistOther Service Providers
Credential: CPSS
Sex: Male
Sole proprietor: No

Specialties & taxonomies

Peer SpecialistPrimary175T00000X
Other Service Providers

Profile Score

Basic profile(47/100 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
83% 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

10535 Hospital Way

Mather, CA 95655-4200

Phone: (916) 843-7000

Street-level locationGet directions

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Mailing address