Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Rene Albert Leon, M.D.

Allergy Physician in Southlake, TX · enumerated 2006.

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

National Provider Identifier

1639255896

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Registry record

Entity type Individual (Type 1)

Name Dr. Rene Albert Leon

Credential M.D.

Sex Male

Practice address 900 E Southlake Blvd, Ste 300, Southlake, TX, 76092

Phone (817) 421-0770

Fax (817) 421-4759

Enumeration date Oct 31, 2006

Last updated in NPPES Jan 9, 2024

Taxonomy & licenses

174400000X Specialist Other Service Providers · License J1167 (TX) Secondary

207KA0200X Allergy Physician Allopathic & Osteopathic Physicians · License J1167 (TX) Primary

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

What specialty is Rene Leon?

Rene Leon is registered in NPPES with the primary taxonomy of Allergy 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 2024-01-09.