Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Leo Walter Tress, D.C.

Chiropractor in New York, NY · enumerated 2007.

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

National Provider Identifier

1104049493

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Registry record

Entity type Individual (Type 1)

Name Dr. Leo Walter Tress

Credential D.C.

Sex Male

Practice address 271 Madison Ave, Suite 1600, New York, NY, 10016

Phone (212) 682-6620

Fax (212) 682-6588

Enumeration date Apr 11, 2007

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

111N00000X Chiropractor Chiropractic Providers · License X009100 (NY) Primary

DC · Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders. About the DC 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 1104049493 active?

Yes, as of the latest NPPES snapshot, NPI 1104049493 is active (record last updated 2007-07-08).

How do I verify Leo Tress's NPI record?

Cross-check NPI 1104049493 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.