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

Alexander Jonathan Trenk, MD

Vascular Surgery Physician in Arlington Heights, IL · enumerated 2018.

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

National Provider Identifier

1508359936

Verified

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Registry record

Entity type Individual (Type 1)

Name Alexander Jonathan Trenk

Credential MD

Sex Male

Practice address Arlington Heights, IL, 60005

Phone (847) 618-2809

Enumeration date Jun 11, 2018

Last updated in NPPES Apr 15, 2026

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

Taxonomy & licenses

2086S0129X Vascular Surgery Physician Allopathic & Osteopathic Physicians · License 036176334 (IL) Primary

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 125.071766 (IL) Secondary

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 036176334 (IL) Secondary

2086S0129X Vascular Surgery Physician Allopathic & Osteopathic Physicians · License A183690 (CA) 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.

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Frequently asked questions

What is the NPI number for Alexander Trenk?

The National Provider Identifier (NPI) for Alexander Trenk is 1508359936, a Type 1 (individual) record in the CMS NPPES registry.

Where does Alexander Trenk practice?

The practice location on file with NPPES is in Arlington Heights, IL. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-04-15.