Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mary Elizabeth O'Sullivan, AUDIOLOGIST
Audiologist in Vancouver, WA · enumerated 2008.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1598915571
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Registry record
Entity type Individual (Type 1)
Name Mary Elizabeth O'Sullivan
Credential AUDIOLOGIST
Sex Female
Practice address 501 Se 172nd Ave, 230, Vancouver, WA, 98684
Phone (360) 397-3920
Enumeration date Sep 25, 2008
Last updated in NPPES Apr 19, 2011
Taxonomy & licenses
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 243537 | 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.
Frequently asked questions
Is NPI 1598915571 active?
Yes, as of the latest NPPES snapshot, NPI 1598915571 is active (record last updated 2011-04-19).
How do I verify Mary O'Sullivan's NPI record?
Cross-check NPI 1598915571 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Other providers at this practice address
Browse all → Jonathan Sachs Gastroenterology Physician · Vancouver, WA NPI 1952301277 Christopher Lotufo Foot & Ankle Surgery Podiatrist · Vancouver, WA NPI 1215909452 Mark Anderson Emergency Medicine Physician · Vancouver, WA NPI 1376506501 Natalya Nadal Pediatrics Physician · Vancouver, WA NPI 1952364846 Jenny Baldwin Massage Therapist · Vancouver, WA NPI 1801841929 Megan Baker Pediatrics Physician · Vancouver, WA NPI 1831138650 Robert Fisher Sleep Medicine (Internal Medicine) Physician · Vancouver, WA NPI 1437199585 Zheng Qian Dermatology Physician · Vancouver, WA NPI 1114950896
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-04-19.