NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Weidun Alan Guo, MD

Trauma Surgery Physician in Buffalo, NY · enumerated 2006.

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

National Provider Identifier

1598779720

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. Weidun Alan Guo
Credential MD
Sex Male
Practice address 462 Grider St, Dept of Surgery, Buffalo, NY, 14215
Fax (716) 898-3194
Enumeration date Jul 27, 2006
Last updated in NPPES Mar 26, 2014

Taxonomy & licenses

2086S0127X Trauma Surgery Physician Allopathic & Osteopathic Physicians · License 240872 (NY) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier Type State Issuer
02806664 Medicaid NY -

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 is the NPI number for Weidun Guo?
The National Provider Identifier (NPI) for Weidun Guo is 1598779720, a Type 1 (individual) record in the CMS NPPES registry.
Where does Weidun Guo practice?
The practice location on file with NPPES is in Buffalo, NY. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-03-26.