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

Anna Wisniewski-Zyskowski, MD

Psychiatry Physician in Stamford, CT · enumerated 2006.

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

National Provider Identifier

1326050311

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Registry record

Entity type Individual (Type 1)

Name Anna Wisniewski-Zyskowski

Credential MD

Sex Female

Practice address Stamford, CT, 06902

Phone (203) 276-7081

Enumeration date Aug 12, 2006

Last updated in NPPES Nov 3, 2020

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

Taxonomy & licenses

2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians · License 039601 (CT) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
779334000	Other	CT	AETNA / MAGELLAN
P3402606	Other	CT	OXFORD HEALTH PLAN
TIN	Other	CT	UNITED BEHAVIORAL HEALTH
347935	Other	CT	HEALTH NET
P00292934	Other	CT	RAILROAD MEDICARE
010039601CT01	Other	CT	ANTHEM BEHAVORIAL HEALTH

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 Anna Wisniewski-Zyskowski?

Anna Wisniewski-Zyskowski is registered in NPPES with the primary taxonomy of Psychiatry Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

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Bo Xu Anatomic Pathology Physician · Stamford, CT NPI 1558351759 Alicia Ribas Pharmacotherapy Pharmacist · Stamford, CT NPI 1134106685 Robert Babkowski Anatomic Pathology & Clinical Pathology Physician · Stamford, CT NPI 1124006341 Kevin Dwyer Surgical Critical Care Physician · Stamford, CT NPI 1417923210 Kristin Edwards Internal Medicine Physician · Stamford, CT NPI 1346203213 Raymond Baer Anatomic Pathology & Clinical Pathology Physician · Stamford, CT NPI 1609829217 Miriam Ambalu Emergency Medicine Physician · Stamford, CT NPI 1639126576 Augusto Podesta Anatomic Pathology & Clinical Pathology Physician · Stamford, CT NPI 1073552642

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-11-03.