NPI Portal NPI Lookup & Verification

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

Dr. Samuel Houtkin, OD

Optometrist in College Station, TX · enumerated 2006 · practices at Med Southwest, Pllc.

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

National Provider Identifier

1881661478

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. Samuel Houtkin
Credential OD
Sex Male
Practice address College Station, TX, 77840
Phone (979) 764-0010
Fax (979) 764-7715
Enumeration date Mar 2, 2006
Last updated in NPPES Mar 6, 2019

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 2238T (TX) 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
044493701 Medicaid TX -
410041586 Other TX RAILROAD MEDICARE

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

How do I verify Samuel Houtkin's NPI record?
Cross-check NPI 1881661478 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1881661478 active?
Yes, as of the latest NPPES snapshot, NPI 1881661478 is active (record last updated 2019-03-06).

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-03-06.