NPI Portal NPI Lookup & Verification

Phyllis E. Marshall

Phyllis E. Marshall is a Social Worker provider (Social Worker) practicing in Ossining, NY, registered in the NPPES registry with NPI 1669005005 since 2020.

✓ Active NPI ✓ Valid NPI checksum Sole proprietor

NPI 1669005005
Entity type Individual (Type 1)
Name Phyllis E. Marshall
Sex Female
Practice address Ossining, NY, 10562
Phone 9147625302
Fax 9147627844
Enumeration date 2020-02-13
Last updated in NPPES 2020-02-13

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

Taxonomy & licenses

Taxonomy code Specialty Primary License State
104100000X Social Worker Primary
Copy-ready billing details
Provider: Phyllis Marshall
NPI: 1669005005
Taxonomy: 104100000X (Social Worker)
Address: Ossining, NY, 10562

Other providers at this practice address

NPI Name Type Specialty Location
1922720622 Shawn Chouhan Individual Community Health Worker Ossining, NY

Verify this record

Cross-check NPI 1669005005 against the authoritative CMS record: view Phyllis E. Marshall on the official NPPES registry .

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 or validate an NPI number.

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

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2020-02-13.