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

Mark Thomas Lewis, DPM

Podiatrist in Renton, WA · enumerated 2005.

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

National Provider Identifier

1770581910

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Registry record

Entity type Individual (Type 1)
Name Mark Thomas Lewis
Credential DPM
Sex Male
Practice address Renton, WA, 98055
Phone (425) 277-3668
Fax (425) 277-0732
Enumeration date Jul 12, 2005
Last updated in NPPES Jul 28, 2021

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

Taxonomy & licenses

213E00000X Podiatrist Podiatric Medicine & Surgery Service Providers Primary
DPM · Doctor of Podiatric Medicine: A physician specializing in medical and surgical care of the foot and ankle. About the DPM credential

Other identifiers

Identifier Type State Issuer
7110729 Medicaid WA -
156352 Other WA DEPT OF L&I NUMBER

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

How do I verify Mark Lewis's NPI record?
Cross-check NPI 1770581910 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1770581910 active?
Yes, as of the latest NPPES snapshot, NPI 1770581910 is active (record last updated 2021-07-28).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-07-28.