Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Dora Diana Mercier, PT

Physical Therapist in Dallas, OR · enumerated 2020.

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

National Provider Identifier

1659905784

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Registry record

Entity type Individual (Type 1)

Name Mrs. Dora Diana Mercier

Credential PT

Sex Female

Practice address 525 Se Washington St, Dallas, OR, 97338

Phone (503) 623-7305

Enumeration date Feb 27, 2020

Last updated in NPPES Feb 27, 2020

Taxonomy & licenses

225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers Primary

PT · Physical Therapist: A licensed movement specialist treating injury and disability through exercise and rehabilitation. About the PT 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

How do I verify Dora Mercier's NPI record?

Cross-check NPI 1659905784 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1659905784 active?

Yes, as of the latest NPPES snapshot, NPI 1659905784 is active (record last updated 2020-02-27).

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Salem Health West Valley Critical Access Hospital · Dallas, OR NPI 1245237486 Gretel Honis Emergency Medicine Physician · Dallas, OR NPI 1194760884 Frazier Grace Certified Registered Nurse Anesthetist · Dallas, OR NPI 1760414213 John Hadley Family Medicine Physician · Dallas, OR NPI 1508889320 Robert Hillstrom Emergency Medicine Physician · Dallas, OR NPI 1811057862 Mellet Romero Physical Therapist · Dallas, OR NPI 1922254515 West Valley Hospital Pharmacy Community/Retail Pharmacy · Dallas, OR NPI 1871829796 Dallas Oregon Emergency Physicians LLC Emergency Medicine Physician · Dallas, OR NPI 1659661155

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-02-27.