Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Michael Samuel Haar, M.D.

Specialist in Buffalo, NY · enumerated 2006.

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

National Provider Identifier

1144258641

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Registry record

Entity type Individual (Type 1)

Name Dr. Michael Samuel Haar

Credential M.D.

Sex Male

Practice address 1083 Delaware Ave, Buffalo, NY, 14209

Phone (716) 882-1023

Fax (716) 882-1022

Enumeration date Jun 30, 2006

Last updated in NPPES Mar 7, 2011

Taxonomy & licenses

174400000X Specialist Other Service Providers · License 168852 (NY) Primary

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

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 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 Michael Haar?

Michael Haar is registered in NPPES with the primary taxonomy of Specialist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-03-07.