Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Monica H Demasi, M.D.

Family Medicine Physician in Corvallis, OR · enumerated 2006.

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

National Provider Identifier

1871525303

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Registry record

Entity type Individual (Type 1)

Name Monica H Demasi

Credential M.D.

Sex Female

Practice address 3517 Nw Samaritan Dr Ste 201, Corvallis, OR, 97330

Phone (541) 768-5142

Enumeration date Jul 7, 2006

Last updated in NPPES Jul 2, 2021

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 228437 (MA) Secondary

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License MD173840 (OR) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Monica Demasi practice?

The practice location on file with NPPES is in Corvallis, OR. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Monica Demasi?

The National Provider Identifier (NPI) for Monica Demasi is 1871525303, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-07-02.