Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Ranil S Gajanayaka, MD

Nephrology Physician in Irving, TX · enumerated 2008.

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

National Provider Identifier

1841452380

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Registry record

Entity type Individual (Type 1)

Name Dr. Ranil S Gajanayaka

Credential MD

Sex Male

Practice address 2005 W Park Dr Ste 200, Irving, TX, 75061

Phone (214) 358-2300

Fax (214) 579-6984

Enumeration date Jun 26, 2008

Last updated in NPPES Nov 15, 2023

Taxonomy & licenses

207RN0300X Nephrology Physician Allopathic & Osteopathic Physicians · License Q4580 (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
Q4580	Other	TX	MEDICAL 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 Ranil Gajanayaka?

Ranil Gajanayaka is registered in NPPES with the primary taxonomy of Nephrology 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-11-15.