NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Diaa Osman, DO

Hematology & Oncology Physician in Austin, TX · enumerated 2007 · practices at Texas Oncology PA.

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

National Provider Identifier

1689894495

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. Diaa Osman
Credential DO
Sex Male
Practice address 4101 James Casey St Ste 100, Austin, TX, 78745
Phone (512) 447-2202
Fax (512) 447-5337
Enumeration date Apr 26, 2007
Last updated in NPPES Aug 30, 2022

Taxonomy & licenses

207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License 63605 (MN) Secondary
207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License Q3567 (TX) Primary
DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO 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 Diaa Osman practice?
The practice location on file with NPPES is in Austin, TX. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Diaa Osman?
The National Provider Identifier (NPI) for Diaa Osman is 1689894495, 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 2022-08-30.