Francisco Javier Diaz Viera, MD
Cardiovascular Disease Physician · Austin, TX
Francisco Javier Diaz Viera, MD is a cardiovascular disease physician with a practice address in Austin, Texas, and NPI 1174180269, issued on May 23, 2019. Check the license (Texas T9901, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Francisco Javier Diaz Viera
- Credential
- MD
- Primary taxonomy
- Cardiovascular Disease Physician 207RC0000X
- License numbers
- T9901 TX
693889 TX
Self-reported in NPPES; status is on the state search - Practice location
- 6818 Austin Center Blvd Ste 205, Austin, TX 78731
- Phone
- (512) 344-0450
- Enumerated
- May 23, 2019
- Record last updated
- Feb 5, 2026
- Fax
- (512) 406-7318
- Medicare enrollment
- Enrolled (PECOS I20260515000903); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest cardiovascular disease physician records → All 1,603 in Texas → Look up another NPI →
Also registered at 6818 Austin Center Blvd Ste 205
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Yasir Al-Abboodi, MDGastroenterology Physician1295095081
- James Black, MDCardiovascular Disease Physician1831159789
- Anthony Caruso, MDCardiovascular Disease Physician1861417958
- Jessica Darnutzer, APRN, FNP-CFamily Nurse Practitioner1245627140
- Parul Desai, MDCardiovascular Disease Physician1922009976
- Regina Koshy, MDCardiovascular Disease Physician1538397583
Verify Francisco Javier Diaz Viera in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license T9901Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average cardiovascular disease physician in 2024
56 Medicare Part D claims for 14 beneficiaries, against an average of 3,078 among the 20,728 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Austin Regional Clinic PAAustin, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Francisco Javier Diaz Viera among 1,603 cardiovascular disease physician records in Texas
Francisco Javier Diaz Viera, MD is one of 1,603 cardiovascular disease physician records with a practice address in Texas. 88% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 95% of them.
- NPI issued2019 · 95% of these records are older, 3% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileYes · 76% of these records are
- Graduated2019 · median 1998 among the 1,219 with a school on file
- Record last updated2026 · 47% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Cardiovascular Disease Physician providers in Texas
There are 1,603 cardiovascular disease physician records in Texas.
All 1,603 in Texas → Every provider in Austin → Cardiovascular Disease Physician nationwide →
The 8 cardiovascular disease physician records with the nearest ZIP codes
- James Black, MDAustin, TX 787311831159789
- Anthony Caruso, MDAustin, TX 787311861417958
- Parul Desai, MDAustin, TX 787311922009976
- Regina Koshy, MDAustin, TX 787311538397583
- Yan Liu, M.D., PH.D.Austin, TX 787311134446172
- George Rodgers, MDAustin, TX 787311487646667
- Saulette Tillman, M.D.Austin, TX 787311922298579
- Vipul Madhwani, MBBSAustin, TX 787351700291747
Common questions
What is Francisco Javier Diaz Viera, MD's NPI number?
Francisco Javier Diaz Viera, MD's National Provider Identifier (NPI) is 1174180269, issued on May 23, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Francisco Javier Diaz Viera, MD located?
The NPPES record lists a practice address at 6818 Austin Center Blvd Ste 205, Austin, TX, 78731. Phone: (512) 344-0450. Providers update this record themselves, so call before visiting.
How can I verify Francisco Javier Diaz Viera, MD's license?
NPPES lists Texas license number T9901, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Francisco Javier Diaz Viera, MD prescribe under Medicare Part D?
In 2024, Francisco Javier Diaz Viera, MD had 56 Medicare Part D claims for 14 beneficiaries; the average among cardiovascular disease physician prescribers was 3,078. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.