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DR. FRANCISCO JAVIER DIAZ VIERA MD
NPI 1174180269
Internal Medicine - Cardiovascular Disease in Austin, TX

Active since May 23, 2019PECOS EnrolledAccepts Medicare Assignment
6818 AUSTIN CENTER BLVD STE 205, AUSTIN, TX 78731(512) 344-0450(512) 406-7318 Get Directions Write a Review

NPPES record last updated: February 5, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Feb 5, 2026, Oct 4, 2023, May 23, 2019 (3 updates tracked since 2019).

About Dr. Francisco Javier Diaz Viera Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. FRANCISCO JAVIER DIAZ VIERA MD (NPI 1174180269) is an individual cardiovascular disease provider in Austin, Texas, licensed in Texas (T9901) and active in the NPI registry since May 2019. He is enrolled in Medicare PECOS and is a graduate of Other (2019).

NPPES Registry Identity

NPI1174180269
Entity TypeIndividualMale
Primary Taxonomy207RC0000X
Provider Legal NameDR. FRANCISCO JAVIER DIAZ VIERACredential: MD
Location Address6818 AUSTIN CENTER BLVD STE 205Austin, TX 78731-3100
Mailing Address6210 E Hwy 290Austin, TX 78723-1142 · (512) 483-9596 · Fax (512) 406-6216
Phone(512) 344-0450
Fax(512) 406-7318
Sole ProprietorNo
Medical School CMSOtherGraduated 2019
Enumeration DateMay 23, 2019
Last NPPES UpdateFebruary 5, 20263 updates tracked since enumeration
NPPES CertifiedFebruary 5, 2026
✔ NPI 1174180269 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RC0000X
License✔ Licensed in TX · T9901
Definition
An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.
Also ListedInternal MedicineTaxonomy 207R00000X · License 693889 (TX)
6818 AUSTIN CENTER BLVD STE 205, Austin, TX 78731
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Texas, Oscar Insurance Company, Sendero Health Plans, Local Nonprofit.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Francisco Javier Diaz Viera Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID2860961117
PECOS Enrollment IDI20260515000903
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 78731 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$131.95 typical visit price
range $57.88 – $174.00
Typical copayment $32.98 (range $14.47 – $43.50)
Most-billed visit code 99204
Established Patient
$71.95 typical visit price
range $18.88 – $142.23
Typical copayment $17.98 (range $4.72 – $35.55)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 9

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

JESSICA LONG DARNUTZER APRN, FNP-C
Nurse Practitioner (Family)
6818 AUSTIN CENTER BLVD STE 205
AUSTIN, TX 78731
Travis County (512) 344-0450
YASIR AL-ABBOODI MD
Internal Medicine (Gastroenterology)
6818 AUSTIN CENTER BLVD STE 205
AUSTIN, TX 78731
Travis County (512) 344-0450
DR. ENRIQUE SPINDEL M.D.
Internal Medicine (Gastroenterology)
6818 AUSTIN CENTER BLVD STE 205
AUSTIN, TX 78731
Travis County (512) 344-0450
DR. REGINA KOSHY MD
Internal Medicine (Cardiovascular Disease)
6818 AUSTIN CENTER BLVD STE 205
AUSTIN, TX 78731
Travis County (512) 344-0450
DR. JAMES N BLACK MD
Internal Medicine (Cardiovascular Disease)
6818 AUSTIN CENTER BLVD STE 205
AUSTIN, TX 78731
Travis County (512) 344-0450
NEEMA SARAIYA MD
Internal Medicine (Gastroenterology)
6818 AUSTIN CENTER BLVD STE 205
AUSTIN, TX 78731
Travis County (512) 344-0450
DR. ANTHONY C CARUSO MD
Internal Medicine (Cardiovascular Disease)
6818 AUSTIN CENTER BLVD STE 205
AUSTIN, TX 78731
Travis County (512) 344-0450
DR. PARUL MAHENDRA DESAI MD
Internal Medicine (Cardiovascular Disease)
6818 AUSTIN CENTER BLVD STE 205
AUSTIN, TX 78731
Travis County (512) 344-0450

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Francisco Diaz Viera's NPI number?

The NPI number for Francisco Diaz Viera is 1174180269. It was assigned to this individual provider in the NPPES registry on May 23, 2019.

Where is Francisco Diaz Viera located?

Francisco Diaz Viera practices at 6818 Austin Center Blvd Ste 205, Austin, TX 78731. The listed phone number is (512) 344-0450.

What is Francisco Diaz Viera's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Is Francisco Diaz Viera enrolled in Medicare?

Yes. Francisco Diaz Viera is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Francisco Diaz Viera accept?

Health plans from Blue Cross and Blue Shield of Texas, Oscar Insurance Company and Sendero Health Plans, Local Nonprofit list Francisco Diaz Viera as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Francisco Diaz Viera was last updated on February 5, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.