What is Marshall Grogg's NPI number?

Marshall Grogg's National Provider Identifier (NPI) is 1255299897, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Marshall Grogg's specialty?

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

Where is Marshall Grogg located?

Marshall Grogg's practice location on file with NPPES is 971 Harrison Ave, Elkins, WV 26241-3608.

What is Marshall Grogg's phone number?

The practice phone number listed in the NPPES registry for Marshall Grogg is (304) 636-9450.

Is Marshall Grogg's NPI active?

Yes — Marshall Grogg's NPI (1255299897) is active in the NPPES registry as of the last update on 2026-01-13.

IndividualActive

Marshall Grogg, LGSW

NPI 1255299897 · Social Worker · Elkins, WV

Marshall Grogg, LGSW is a Social Worker provider in Elkins, WV (NPI 1255299897).

Provider details

NPI number: 1255299897
Entity type: Individual
Primary specialty: Social WorkerBehavioral Health & Social Service Providers
Credential: LGSW
Sex: Male
Sole proprietor: No
License: BP00947423 (WV)

Specialties & taxonomies

Social WorkerPrimary104100000XLicense BP00947423 (WV)
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

971 Harrison Ave

Elkins, WV 26241-3608

Phone: (304) 636-9450

Fax: (304) 636-2282

Street-level locationGet directions

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Mailing address