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

Dr. Lawrence D. Siegel, O.D.

Optometrist in Newton, MA · enumerated 2005.

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

National Provider Identifier

1699779520

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Registry record

Entity type Individual (Type 1)

Name Dr. Lawrence D. Siegel

Credential O.D.

Sex Male

Practice address Newton, MA, 02464

Phone (617) 232-0220

Fax (617) 734-9738

Enumeration date Jun 9, 2005

Last updated in NPPES May 14, 2021

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

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 3545 (MA) Primary

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

Other identifiers

Identifier	Type	State	Issuer
110016311A	Medicaid	MA	-

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 Lawrence Siegel's NPI record?

Cross-check NPI 1699779520 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1699779520 active?

Yes, as of the latest NPPES snapshot, NPI 1699779520 is active (record last updated 2021-05-14).

Other providers at this practice address

Browse all →

Vittoria Inc Eyewear Supplier · Newton, MA NPI 1881701134 Lawrence D. Siegel, O.D., LLC Optometrist · Newton, MA NPI 1962546929

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-05-14.