DR. MOHAMMED NAZAR GHASSAN MAHMOUD DO
NPI 1518662964
Internal Medicine in Austin, TX

Active since April 04, 2023PECOS Enrolled
1500 RED RIVER ST, AUSTIN, TX 78701(512) 495-5555 Get Directions Write a Review

NPPES record last updated: March 23, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Mar 23, 2026, Apr 4, 2023 (2 updates tracked since 2023).

About Dr. Mohammed Nazar Ghassan Mahmoud Do NPPES

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

DR. MOHAMMED NAZAR GHASSAN MAHMOUD DO (NPI 1518662964) is an individual internal medicine provider in Austin, Texas, licensed in Texas (BP10083902) and active in the NPI registry since April 2023. He is enrolled in Medicare PECOS and maintains a secondary practice location in Temple.

NPPES Registry Identity

NPI1518662964
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. MOHAMMED NAZAR GHASSAN MAHMOUDCredential: DO
Location Address1500 RED RIVER STAustin, TX 78701-1918
Mailing Address2401 S 31st StTemple, TX 76508-0001 · (254) 724-2267
Sole ProprietorNo
Enumeration DateApril 4, 2023
Last NPPES UpdateMarch 23, 20262 updates tracked since enumeration
NPPES CertifiedMarch 23, 2026
NPI 1518662964 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License Licensed in TX · BP10083902
Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

1500 RED RIVER ST, Austin, TX 78701

Secondary Practice Location 1

Location 12401 S 31st StTemple, TX 76508-0001 · Phone (254) 724-2267

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

Enrolled in Medicare (PECOS)

Dr. Mohammed Nazar Ghassan Mahmoud Do is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 78701 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
$101.65 typical visit price
range $18.88 – $142.23
Typical copayment $25.41 (range $4.72 – $35.55)
Most-billed visit code 99214
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 20

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

Internal Medicine
1500 RED RIVER ST
AUSTIN, TX 78701
Speech-Language Pathologist
1500 RED RIVER ST
AUSTIN, TX 78701
Nurse Practitioner
1500 RED RIVER ST
AUSTIN, TX 78701
Pharmacist
1500 RED RIVER ST
AUSTIN, TX 78701
Nurse Practitioner (Critical Care Medicine)
1500 RED RIVER ST
AUSTIN, TX 78701
Internal Medicine
1500 RED RIVER ST
AUSTIN, TX 78701
Internal Medicine
1500 RED RIVER ST
AUSTIN, TX 78701
Internal Medicine
1500 RED RIVER ST
AUSTIN, TX 78701

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 Mohammed Nazar Mahmoud's NPI number?

The NPI number for Mohammed Nazar Mahmoud is 1518662964. It was assigned to this individual provider in the NPPES registry on April 4, 2023.

Where is Mohammed Nazar Mahmoud located?

Mohammed Nazar Mahmoud practices at 1500 Red River St, Austin, TX 78701. The listed phone number is (512) 495-5555.

What is Mohammed Nazar Mahmoud's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Mohammed Nazar Mahmoud enrolled in Medicare?

Yes. Mohammed Nazar Mahmoud is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Mohammed Nazar Mahmoud was last updated on March 23, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.