NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dianna Grueser, MASTER OF EDUCATION,

Behavior Analyst in Milton, WV · enumerated 2018 · practices at Unlimited Possabilities, Inc..

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1356843510

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dianna Grueser
Credential MASTER OF EDUCATION,
Sex Female
Practice address 1707 Us Route 60 W, Milton, WV, 25541
Enumeration date Mar 5, 2018
Last updated in NPPES Oct 21, 2021

Taxonomy & licenses

103K00000X Behavior Analyst Behavioral Health & Social Service Providers · License 1-21-51351 (WV) Primary
2080P0006X Developmental - Behavioral Pediatrics Physician Allopathic & Osteopathic Physicians · License 1111 (WV) Secondary
222Q00000X Developmental Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers Secondary

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Dianna Grueser?
The National Provider Identifier (NPI) for Dianna Grueser is 1356843510, a Type 1 (individual) record in the CMS NPPES registry.
Where does Dianna Grueser practice?
The practice location on file with NPPES is in Milton, WV. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-10-21.