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

Eric Feng, D.O

Internal Medicine Physician in Vallejo, CA · enumerated 2014.

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

National Provider Identifier

1518371798

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Registry record

Entity type Individual (Type 1)
Name Eric Feng
Credential D.O
Sex Male
Practice address Vallejo, CA, 94589
Phone (707) 651-1000
Enumeration date Jun 16, 2014
Last updated in NPPES Dec 22, 2021

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

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 20A15096 (CA) Primary
DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier Type State Issuer
20A15096 Other CA OSTEOPATHIC MEDICAL BOARD OF CALIFORNIA

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 Eric Feng?
The National Provider Identifier (NPI) for Eric Feng is 1518371798, a Type 1 (individual) record in the CMS NPPES registry.
Where does Eric Feng practice?
The practice location on file with NPPES is in Vallejo, CA. 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 2021-12-22.