Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Seth G Dewey, MD

Psychiatry Physician in Buffalo, NY · enumerated 2006.

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

National Provider Identifier

1891757589

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Registry record

Entity type Individual (Type 1)

Name Seth G Dewey

Credential MD

Sex Male

Practice address 40 La Riviere Dr Ste 201, Buffalo, NY, 14202

Phone (716) 893-1010

Fax (716) 893-1002

Enumeration date Apr 6, 2006

Last updated in NPPES May 19, 2022

Taxonomy & licenses

2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians · License 197878 (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
02219029	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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1891757589 active?

Yes, as of the latest NPPES snapshot, NPI 1891757589 is active (record last updated 2022-05-19).

How do I verify Seth Dewey's NPI record?

Cross-check NPI 1891757589 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-05-19.