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

Joan Tremain

Clinical Social Worker in Rehoboth Beach, DE · enumerated 2007.

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

National Provider Identifier

1578696035

Verified

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Registry record

Entity type Individual (Type 1)

Name Joan Tremain

Sex Female

Practice address Rehoboth Beach, DE, 19971

Phone (302) 545-0703

Enumeration date Mar 13, 2007

Last updated in NPPES Jun 21, 2012

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 537 (DE) Primary

Other identifiers

Identifier	Type	State	Issuer
11695262	Other	-	CAQH
537	Other	DE	LCSW
28858	Other	-	BCD, BOARD CERTIFIED DIPLOMATE, AMER. BOARD OF EXAMINERS IN CLINICAL SOCIAL WORK

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 Joan Tremain?

Joan Tremain 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.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-06-21.