Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Donald Walter Kowalski, MD

Psychiatry Physician in Hudson Falls, NY · enumerated 2006 · practices at Warren Washington Association for Mental Health, Inc.

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

National Provider Identifier

1134199078

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Registry record

Entity type Individual (Type 1)

Name Dr. Donald Walter Kowalski

Credential MD

Sex Male

Practice address 3043 State Route 4, Hudson Falls, NY, 12839

Phone (518) 747-2284

Fax (518) 747-2253

Enumeration date Jan 24, 2006

Last updated in NPPES Feb 26, 2010

Taxonomy & licenses

2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians · License 156437-1 (NY) 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
000406632004	Other	-	BLUESHIELD OF NORTHEASTERN NY
P00473247	Other	-	MEDICARE RAILROAD PART B
11056587	Other	-	CAQH
53088A	Other	-	MVP
080305000106	Other	-	FIDELIS
156437	Medicaid	NY	-

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

What is the NPI number for Donald Kowalski?

The National Provider Identifier (NPI) for Donald Kowalski is 1134199078, a Type 1 (individual) record in the CMS NPPES registry.

Where does Donald Kowalski practice?

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

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-02-26.