Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Anne Michelle Machesky, MD

Psychiatry Physician in Oshkosh, WI · enumerated 2019.

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

National Provider Identifier

1619439437

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Registry record

Entity type Individual (Type 1)

Name Anne Michelle Machesky

Credential MD

Sex Female

Practice address 220 Washington Ave, Oshkosh, WI, 54901

Phone (920) 236-4700

Fax (920) 236-1157

Enumeration date Apr 1, 2019

Last updated in NPPES Oct 22, 2025

Taxonomy & licenses

2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians · License 74711 (WI) 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.

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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 Anne Machesky?

Anne Machesky 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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Kenneth Casimir Psychiatry Physician · Oshkosh, WI NPI 1124046818 Michael Vicente Psychiatry Physician · Oshkosh, WI NPI 1669486619 County of Winnebago Mental Health Clinic/Center (Including Community Mental Health Center) · Oshkosh, WI NPI 1508960675 Louis Topel Psychologist · Oshkosh, WI NPI 1316036668 Douglas Brey Professional Counselor · Oshkosh, WI NPI 1093886723 Michael Daehn Clinical Psychologist · Oshkosh, WI NPI 1417015025 David Zerrien Psychiatry Physician · Oshkosh, WI NPI 1780742262 George Benz Mental Health Counselor · Oshkosh, WI NPI 1912067026

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-10-22.