Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Joan Mildenstein, O.D.

Optometrist in Kent, WA · enumerated 2010.

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

National Provider Identifier

1689990517

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Registry record

Entity type Individual (Type 1)

Name Dr. Joan Mildenstein

Credential O.D.

Sex Female

Practice address 10024 Se 240th St, Kent, WA, 98031

Phone (253) 852-5440

Enumeration date Apr 16, 2010

Last updated in NPPES Apr 16, 2010

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 60119621 (WA) Primary

OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD 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

Is NPI 1689990517 active?

Yes, as of the latest NPPES snapshot, NPI 1689990517 is active (record last updated 2010-04-16).

How do I verify Joan Mildenstein's NPI record?

Cross-check NPI 1689990517 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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Robert Smithing Nurse Practitioner · Kent, WA NPI 1023004611 Madeline Wiley Nurse Practitioner · Kent, WA NPI 1932195526 Linda Crossgrove Mental Health Counselor · Kent, WA NPI 1811983653 Kathleen Kleiver Nurse Practitioner · Kent, WA NPI 1447247069 Lewis Lim Optometrist · Kent, WA NPI 1265479166 Lewis S Lim and Associates Od Ps Optometrist · Kent, WA NPI 1851588750 Mb2k, LLC Primary Care Clinic/Center · Kent, WA NPI 1821276759 Dr. Vyacheslav A. Borisenko, D.C., P.S. Chiropractor · Kent, WA NPI 1164667085

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-04-16.