Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Aaron Anderson Grigg, LCSW

Q: What is the NPI number for Aaron Grigg?

The National Provider Identifier (NPI) for Aaron Grigg is 1477649549, a Type 1 (individual) record in the CMS NPPES registry.

Clinical Social Worker in Baker City, OR · enumerated 2006 · practices at New Directions Northwest, Inc.

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

National Provider Identifier

1477649549

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Registry record

Entity type Individual (Type 1)

Name Aaron Anderson Grigg

Credential LCSW

Sex Male

Practice address 3425 13th St, Baker City, OR, 97814

Phone (541) 523-7400

Fax (541) 523-4927

Enumeration date Oct 5, 2006

Last updated in NPPES Aug 30, 2024

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License L3833 (OR) Primary

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers Secondary

101Y00000X Counselor Behavioral Health & Social Service Providers Secondary

101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers · License T-24-3500 (OR) Secondary

LCSW · Licensed Clinical Social Worker: A social worker licensed for clinical practice including mental-health therapy. About the LCSW credential

Other identifiers

Identifier	Type	State	Issuer
50077591	Medicaid	OR	-
500775921	Medicaid	OR	-

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

Where does Aaron Grigg practice?

The practice location on file with NPPES is in Baker City, OR. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Aaron Grigg?

The National Provider Identifier (NPI) for Aaron Grigg is 1477649549, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-08-30.