NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Alonso R Diaz, M. D.

Nephrology Physician in Bridgeville, PA · enumerated 2016 · practices at Teredesai Mccann & Associates PC.

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

National Provider Identifier

1992169171

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Alonso R Diaz
Credential M. D.
Sex Male
Practice address 1597 Washington Pike Ste A22, Bridgeville, PA, 15017
Phone (412) 489-6919
Fax (412) 489-6279
Enumeration date Apr 13, 2016
Last updated in NPPES Aug 16, 2023

Taxonomy & licenses

207RN0300X Nephrology Physician Allopathic & Osteopathic Physicians · License 1992169171 (CA) Secondary
207RN0300X Nephrology Physician Allopathic & Osteopathic Physicians · License MD473697 (PA) 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

Where does Alonso Diaz practice?
The practice location on file with NPPES is in Bridgeville, PA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Alonso Diaz?
The National Provider Identifier (NPI) for Alonso Diaz is 1992169171, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-08-16.