NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Thomas J Landgraf, OD

Optometrist in Saint Louis, MO · enumerated 2005.

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

National Provider Identifier

1427041615

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. Thomas J Landgraf
Credential OD
Sex Male
Practice address 7840 Natural Bridge Rd, Patient Care Center, Saint Louis, MO, 63121
Fax (314) 516-5507
Enumeration date Aug 24, 2005
Last updated in NPPES Jun 10, 2020

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 1778 (TN) Secondary
152W00000X Optometrist Eye and Vision Services Providers · License 2007030935 (MO) 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

Where does Thomas Landgraf practice?
The practice location on file with NPPES is in Saint Louis, MO. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Thomas Landgraf?
The National Provider Identifier (NPI) for Thomas Landgraf is 1427041615, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-06-10.