What is Katherine Grethel's NPI number?

Katherine Grethel's National Provider Identifier (NPI) is 1821957515, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Katherine Grethel's specialty?

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

Where is Katherine Grethel located?

Katherine Grethel's practice location on file with NPPES is 3333 Burnet Ave, Cincinnati, OH 45229-3026.

What is Katherine Grethel's phone number?

The practice phone number listed in the NPPES registry for Katherine Grethel is (513) 636-4124.

Is Katherine Grethel's NPI active?

Yes — Katherine Grethel's NPI (1821957515) is active in the NPPES registry as of the last update on 2026-01-19.

IndividualActive

Katherine Grethel, LSW

NPI 1821957515 · Social Worker · Cincinnati, OH

Katherine Grethel, LSW is a Social Worker provider in Cincinnati, OH (NPI 1821957515).

Provider details

NPI number: 1821957515
Entity type: Individual
Primary specialty: Social WorkerBehavioral Health & Social Service Providers
Credential: LSW
Sex: Female
Sole proprietor: No
License: S.2309981 (OH)

Specialties & taxonomies

Social WorkerPrimary104100000XLicense S.2309981 (OH)
Behavioral Health & Social 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

3333 Burnet Ave

Cincinnati, OH 45229-3026

Phone: (513) 636-4124

Street-level locationGet directions

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Mailing address