Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Antoni A Piergies, M.D.

Geriatric Medicine (Internal Medicine) Physician in Skokie, IL · enumerated 2008.

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

National Provider Identifier

1639322662

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Registry record

Entity type Individual (Type 1)

Name Dr. Antoni A Piergies

Credential M.D.

Sex Male

Practice address 9725 Woods Dr Unit 1804, Skokie, IL, 60077

Phone (847) 848-1525

Enumeration date Nov 4, 2008

Last updated in NPPES Sep 14, 2023

Taxonomy & licenses

207RG0300X Geriatric Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License 036069721 (IL) Primary

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License 036.069721 (IL) Secondary

2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians · License 036.069721 (IL) Secondary

208U00000X Clinical Pharmacology Physician Allopathic & Osteopathic Physicians · License 036.069721 (IL) Secondary

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

What specialty is Antoni Piergies?

Antoni Piergies is registered in NPPES with the primary taxonomy of Geriatric Medicine (Internal Medicine) Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-09-14.