Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Robert Ostrom, AP

Nurse Practitioner in Redmond, WA · enumerated 2007.

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

National Provider Identifier

1639394133

Verified

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Registry record

Entity type Individual (Type 1)

Name Robert Ostrom

Credential AP

Sex Male

Practice address 2700 152nd Ave Ne, Redmond, WA, 98052

Phone (425) 883-5151

Fax (425) 883-5389

Enumeration date Apr 17, 2007

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License AP30005166 (WA) Primary

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

Is NPI 1639394133 active?

Yes, as of the latest NPPES snapshot, NPI 1639394133 is active (record last updated 2007-07-08).

How do I verify Robert Ostrom's NPI record?

Cross-check NPI 1639394133 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Ronald Matthews Physical Therapist · Redmond, WA NPI 1235109885 Susan Hoang Pharmacist · Redmond, WA NPI 1588635742 Cecily Erickson Nurse Practitioner · Redmond, WA NPI 1992860464 Kevin Au Surgery Physician · Redmond, WA NPI 1417014846 Bruce Beck Gastroenterology Physician · Redmond, WA NPI 1649337098 Janet Carroll Ophthalmology Physician · Redmond, WA NPI 1578620845 Desiray Bailey Anesthesiology Physician · Redmond, WA NPI 1861559205 Michael Chang Diagnostic Radiology Physician · Redmond, WA NPI 1114074390

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.