Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Sonia S Durairaj, M.D.

Internal Medicine Physician in West Lake Hills, TX · enumerated 2007.

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

National Provider Identifier

1932239704

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Registry record

Entity type Individual (Type 1)

Name Sonia S Durairaj

Credential M.D.

Sex Female

Practice address 3811 Bee Caves Rd Ste 200, 3811 Bee Caves Rd, West Lake Hills, TX, 78746

Phone (512) 759-6033

Enumeration date Mar 7, 2007

Last updated in NPPES Oct 14, 2025

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License Q2539 (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
95588256	Medicaid	CO	-
Q2539	Other	TX	TX LICENSE

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

What specialty is Sonia Durairaj?

Sonia Durairaj is registered in NPPES with the primary taxonomy of Internal Medicine Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-10-14.