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

Ann Marie Macasa, MD

Rheumatology Physician in Newberg, OR · enumerated 2006 · practices at Willamette Valley Rheumatolgy PC.

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

National Provider Identifier

1417068198

Verified

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Registry record

Entity type Individual (Type 1)

Name Ann Marie Macasa

Credential MD

Sex Female

Practice address Newberg, OR, 97132

Phone (503) 538-7500

Fax (503) 538-9183

Enumeration date Aug 31, 2006

Last updated in NPPES Feb 27, 2012

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

Taxonomy & licenses

207RR0500X Rheumatology Physician Allopathic & Osteopathic Physicians · License MD26899 (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
247403	Medicaid	OR	-

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 Ann Marie Macasa?

The National Provider Identifier (NPI) for Ann Marie Macasa is 1417068198, a Type 1 (individual) record in the CMS NPPES registry.

Where does Ann Marie Macasa practice?

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

Other providers at this practice address

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Willamette Valley Rheumatolgy PC Rheumatology Physician · Newberg, OR NPI 1831324847

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-02-27.