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

Ms. Elizabeth Balliet Stiff, MSW

Clinical Social Worker in Lewes, DE · enumerated 2007.

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

National Provider Identifier

1609904184

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Registry record

Entity type Individual (Type 1)

Name Ms. Elizabeth Balliet Stiff

Credential MSW

Sex Female

Practice address Lewes, DE, 19958

Phone (302) 645-0115

Enumeration date Feb 28, 2007

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 Q1-0000007 (DE) Primary

Other identifiers

Identifier	Type	State	Issuer
1000021562	Medicaid	DE	-

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

How do I verify Elizabeth Stiff's NPI record?

Cross-check NPI 1609904184 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1609904184 active?

Yes, as of the latest NPPES snapshot, NPI 1609904184 is active (record last updated 2007-07-08).

Other providers at this practice address

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Gary Raffel Internal Medicine Physician · Lewes, DE NPI 1396747432 Roger Coletti Cardiovascular Disease Physician · Lewes, DE NPI 1770508053 Coastal Therapeutic Services, LLC Clinical Social Worker · Lewes, DE NPI 1679630164 Kathleen Coletti Clinical Social Worker · Lewes, DE NPI 1487703773 Karen Kohn Mental Health Counselor · Lewes, DE NPI 1639229297 Katharine Nicodemus Clinical Neuropsychologist · Lewes, DE NPI 1700921038 William Hadder Massage Therapist · Lewes, DE NPI 1528283231 Interventional Cardiovascular Associates, P.A. Specialist · Lewes, DE NPI 1013128933

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