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

Dr. Andrew Tresser, OD

Optometrist in Pleasant Valley, NY · enumerated 2006 · practices at Yuk-Wah Chan, MD, PC.

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

National Provider Identifier

1861454340

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Registry record

Entity type Individual (Type 1)

Name Dr. Andrew Tresser

Credential OD

Sex Male

Practice address Pleasant Valley, NY, 12569

Phone (845) 635-3700

Fax (845) 635-8317

Enumeration date Apr 3, 2006

Last updated in NPPES Aug 4, 2010

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

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 3141 (NY) Primary

OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD credential

Other identifiers

Identifier	Type	State	Issuer
9146353700	Other	NY	VSP
355	Other	NY	DAVIS
P3028020	Other	NY	OXFORD
597113	Other	NY	MVP
LD	Other	NY	GVS

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

How do I verify Andrew Tresser's NPI record?

Cross-check NPI 1861454340 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1861454340 active?

Yes, as of the latest NPPES snapshot, NPI 1861454340 is active (record last updated 2010-08-04).

Other providers at this practice address

Browse all →

Yuk-Wah Chan, MD, PC Family Medicine Physician · Pleasant Valley, NY NPI 1215952478 Yuk-Wah Chan Family Medicine Physician · Pleasant Valley, NY NPI 1972528099

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-08-04.