NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Theresa Chan, M.D.

Family Medicine Physician in Medford, OR · enumerated 2006.

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

National Provider Identifier

1043254576

Verified

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Registry record

Entity type Individual (Type 1)
Name Ms. Theresa Chan
Credential M.D.
Sex Female
Practice address 2825 E Barnett Road, Rogue Valley Medical Center, Medford, OR, 97504
Phone (541) 789-7000
Enumeration date Jun 15, 2006
Last updated in NPPES Jun 23, 2011

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License A83176 (CA) Secondary
207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License MD152431 (OR) 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
00A831760 Medicaid CA -

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 Theresa Chan?
The National Provider Identifier (NPI) for Theresa Chan is 1043254576, a Type 1 (individual) record in the CMS NPPES registry.
Where does Theresa Chan practice?
The practice location on file with NPPES is in Medford, OR. Providers can have multiple locations; NPPES lists the primary practice address.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-06-23.