Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Sebastian Wilk, MD

Rheumatology Physician in Olean, NY · enumerated 2014.

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

National Provider Identifier

1619389475

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. Sebastian Wilk

Credential MD

Sex Male

Practice address Olean, NY, 14760

Phone (716) 376-2223

Fax (716) 376-2349

Enumeration date May 28, 2014

Last updated in NPPES Oct 11, 2019

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207RR0500X Rheumatology Physician Allopathic & Osteopathic Physicians · License 297852 (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 NPI 1619389475 active?

Yes, as of the latest NPPES snapshot, NPI 1619389475 is active (record last updated 2019-10-11).

How do I verify Sebastian Wilk's NPI record?

Cross-check NPI 1619389475 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-10-11.