What is Joe Castro's NPI number?

Joe Castro's National Provider Identifier (NPI) is 1891684304, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Joe Castro's specialty?

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

Where is Joe Castro located?

Joe Castro's practice location on file with NPPES is 265 East St, Tewksbury, MA 01876.

What is Joe Castro's phone number?

The practice phone number listed in the NPPES registry for Joe Castro is (781) 248-8619.

Is Joe Castro's NPI active?

Yes — Joe Castro's NPI (1891684304) is active in the NPPES registry as of the last update on 2025-06-30.

IndividualActive

Joe Castro

NPI 1891684304 · Peer Specialist · Tewksbury, MA

Joe Castro is a Peer Specialist provider in Tewksbury, MA (NPI 1891684304).

Provider details

NPI number: 1891684304
Entity type: Individual
Primary specialty: Peer SpecialistOther Service Providers
Sex: Male
Sole proprietor: No

Specialties & taxonomies

Peer SpecialistPrimary175T00000X
Other Service Providers

Profile Score

Basic profile(48/100 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

265 East St

Tewksbury, MA 01876

Phone: (781) 248-8619

Street-level locationGet directions

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Mailing address