Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Douglas C Riley, M.S.W., L.I.C.S.W.

Clinical Social Worker in South Dartmouth, MA · enumerated 2006.

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

National Provider Identifier

1033166376

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Registry record

Entity type Individual (Type 1)

Name Douglas C Riley

Credential M.S.W., L.I.C.S.W.

Sex Male

Practice address South Dartmouth, MA, 02748

Phone (508) 992-9376

Fax (508) 992-9420

Enumeration date May 30, 2006

Last updated in NPPES Jul 8, 2007

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 100524 (MA) Primary

Other identifiers

Identifier	Type	State	Issuer
P01557	Other	MA	MA BLUE SHIELD
6212763	Other	MA	UNITED BEHAVIORAL HEALTH
000000022694	Other	MA	BMC HEALTHNET PLAN
008898	Other	MA	VALUE OPTIONS
SO13145	Other	MA	CHAMPUS/TRICARE
176982	Other	MA	MAGELLAN BEHAVIORAL HEALT
2081751	Other	MA	CIGNA BEHVIORAL HEALTH
1892193	Other	MA	MBHP

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

How do I verify Douglas Riley's NPI record?

Cross-check NPI 1033166376 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1033166376 active?

Yes, as of the latest NPPES snapshot, NPI 1033166376 is active (record last updated 2007-07-08).

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