NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Elsa Chang, M.D.

Infectious Disease Physician in Mcallen, TX · enumerated 2006.

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

National Provider Identifier

1801833108

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. Elsa Chang
Credential M.D.
Sex Female
Practice address 1200 E Ridge Rd, Suite # 8, Mcallen, TX, 78503
Phone (956) 630-5530
Fax (956) 630-5954
Enumeration date Jun 2, 2006
Last updated in NPPES Nov 27, 2007

Taxonomy & licenses

207RI0200X Infectious Disease Physician Allopathic & Osteopathic Physicians · License M3183 (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
M3183 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 is the NPI number for Elsa Chang?
The National Provider Identifier (NPI) for Elsa Chang is 1801833108, a Type 1 (individual) record in the CMS NPPES registry.
Where does Elsa Chang practice?
The practice location on file with NPPES is in Mcallen, TX. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-11-27.