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

Dr. Nancy Lynn Gum, D.D.S., M.S.D.

Orthodontics and Dentofacial Orthopedics Dentistry in San Jose, CA · enumerated 2006.

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

National Provider Identifier

1639279334

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Registry record

Entity type Individual (Type 1)

Name Dr. Nancy Lynn Gum

Credential D.D.S., M.S.D.

Sex Female

Practice address San Jose, CA, 95125

Phone (408) 269-3436

Fax (408) 269-3466

Enumeration date Sep 22, 2006

Last updated in NPPES Nov 1, 2024

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

Taxonomy & licenses

1223X0400X Orthodontics and Dentofacial Orthopedics Dentistry Dental Providers · License 34707 (CA) Primary

DDS · Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS 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

How do I verify Nancy Gum's NPI record?

Cross-check NPI 1639279334 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1639279334 active?

Yes, as of the latest NPPES snapshot, NPI 1639279334 is active (record last updated 2024-11-01).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-11-01.