What is Jacob Slack's NPI number?

Jacob Slack's National Provider Identifier (NPI) is 1649155052, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Jacob Slack's specialty?

Jacob Slack is listed in the NPPES registry with a primary specialty of Mental Health Counselor (Behavioral Health & Social Service Providers).

Where is Jacob Slack located?

Jacob Slack's practice location on file with NPPES is 332 Birnie Ave, Springfield, MA 01107-1104.

What is Jacob Slack's phone number?

The practice phone number listed in the NPPES registry for Jacob Slack is (413) 732-1920.

Is Jacob Slack's NPI active?

Yes — Jacob Slack's NPI (1649155052) is active in the NPPES registry as of the last update on 2025-08-06.

IndividualActive

Jacob Slack

NPI 1649155052 · Mental Health Counselor · Springfield, MA

Jacob Slack is a Mental Health Counselor provider in Springfield, MA (NPI 1649155052).

Provider details

NPI number: 1649155052
Entity type: Individual
Primary specialty: Mental Health CounselorBehavioral Health & Social Service Providers
Sole proprietor: Yes

Specialties & taxonomies

Mental Health CounselorPrimary101YM0800X
Behavioral Health & Social 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

332 Birnie Ave

Springfield, MA 01107-1104

Phone: (413) 732-1920

Street-level locationGet directions

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Mailing address