What is Leah Mertes's NPI number?

Leah Mertes's National Provider Identifier (NPI) is 1134009509, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Leah Mertes's specialty?

Leah Mertes is listed in the NPPES registry with a primary specialty of Social Worker (Behavioral Health & Social Service Providers).

Where is Leah Mertes located?

Leah Mertes's practice location on file with NPPES is 8 Atwood Dr, Northampton, MA 01060-4266.

What is Leah Mertes's phone number?

The practice phone number listed in the NPPES registry for Leah Mertes is (413) 773-1314.

Is Leah Mertes's NPI active?

Yes — Leah Mertes's NPI (1134009509) is active in the NPPES registry as of the last update on 2025-09-05.

IndividualActive

Leah Mertes

NPI 1134009509 · Social Worker · Northampton, MA

Leah Mertes is a Social Worker provider in Northampton, MA (NPI 1134009509).

Provider details

NPI number: 1134009509
Entity type: Individual
Primary specialty: Social WorkerBehavioral Health & Social Service Providers
Sex: Female
Sole proprietor: No

Specialties & taxonomies

Social WorkerPrimary104100000X
Behavioral Health & Social 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

8 Atwood Dr

Northampton, MA 01060-4266

Phone: (413) 773-1314

Street-level locationGet directions

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Mailing address