Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Diana Devalk, LICSW

Clinical Social Worker in Portsmouth, NH · enumerated 2006.

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

National Provider Identifier

1437223971

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Registry record

Entity type Individual (Type 1)

Name Diana Devalk

Credential LICSW

Sex Female

Practice address 1145 Sagamore Ave, Portsmouth, NH, 03801

Phone (603) 431-6703

Fax (603) 430-3753

Enumeration date Nov 17, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 713 (NH) Primary

Other identifiers

Identifier	Type	State	Issuer
99003227	Medicaid	NH	-
7706655Y0NH01	Other	NH	BHN

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.

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Frequently asked questions

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Diana Devalk?

Diana Devalk is registered in NPPES with the primary taxonomy of Clinical Social Worker. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.