NPI Portal NPI Lookup & Verification

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

Dr. Thomas Littman, PH.D.

Audiologist in Bellevue, WA · enumerated 2005.

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

National Provider Identifier

1720088685

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Registry record

Entity type Individual (Type 1)
Name Dr. Thomas Littman
Credential PH.D.
Sex Male
Practice address Bellevue, WA, 98006
Phone (425) 457-7999
Fax (425) 679-5968
Enumeration date Jul 21, 2005
Last updated in NPPES Jul 30, 2008

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

Taxonomy & licenses

231H00000X Audiologist Speech, Language and Hearing Service Providers · License LD00002233 (WA) Primary
PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD credential

Other identifiers

Identifier Type State Issuer
0196207 Other WA LABOR AND INDUSTRIES
8329781 Medicaid WA -

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.

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Frequently asked questions

Is NPI 1720088685 active?
Yes, as of the latest NPPES snapshot, NPI 1720088685 is active (record last updated 2008-07-30).
How do I verify Thomas Littman's NPI record?
Cross-check NPI 1720088685 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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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-07-30.