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

Gail J. Feinstein, LCSW-C

Clinical Social Worker in Baltimore, MD · enumerated 2011.

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

National Provider Identifier

1104121789

Verified

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Registry record

Entity type Individual (Type 1)

Name Gail J. Feinstein

Credential LCSW-C

Sex Female

Practice address Baltimore, MD, 21208

Phone (410) 456-4306

Fax (443) 450-3409

Enumeration date Jan 13, 2011

Last updated in NPPES Jul 2, 2018

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 10478 (MD) Primary

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 Gail Feinstein practice?

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

What is the NPI number for Gail Feinstein?

The National Provider Identifier (NPI) for Gail Feinstein is 1104121789, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-07-02.