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

Dr. Stephen Douglas Houston, M.D.

Dermatology Physician in Austin, TX · enumerated 2006.

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

National Provider Identifier

1548235633

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Registry record

Entity type Individual (Type 1)

Name Dr. Stephen Douglas Houston

Credential M.D.

Sex Male

Practice address Austin, TX, 78745

Phone (512) 444-7208

Fax (512) 444-2343

Enumeration date Feb 22, 2006

Last updated in NPPES Apr 19, 2019

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

Taxonomy & licenses

207ND0101X MOHS-Micrographic Surgery Physician Allopathic & Osteopathic Physicians · License E1198 (TX) Secondary

207NS0135X Procedural Dermatology Physician Allopathic & Osteopathic Physicians · License E1198 (TX) Secondary

207N00000X Dermatology Physician Allopathic & Osteopathic Physicians · License E1198 (TX) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
122735702	Medicaid	TX	-

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 Stephen Houston practice?

The practice location on file with NPPES is in Austin, TX. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Stephen Houston?

The National Provider Identifier (NPI) for Stephen Houston is 1548235633, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-04-19.