Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Frank Mahzari, MD

Individual provider Internal Medicine Physician · NPI 1841386125

Frank Mahzari, MD practises Internal Medicine in Houston, Texas. Graduated from University of Texas Southwestern Medical School at Dallas in 2002, 24 years ago. Works from 2 locations and accepts Medicare assignment. Licensed in Texas.

Years since qualifying
24
Trained at
University of Texas Southwestern Medical School at Dallas
Licensed in
TX
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

550 Post Oak Blvd Ste 411
Houston, TX 77027-9410
Phone: (832) 669-0111
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 9900 Westpark Dr Ste 240, Houston, TX 77063-5286 — (713) 677-0137

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence L8817 (TX)

Record details

NPI number1841386125
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 5, 2006
Last updated in NPPESDecember 27, 2022
Certification dateDecember 27, 2022

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Medical schoolUNIVERSITY OF TEXAS SOUTHWESTERN MEDICAL SCHOOL AT DALLAS
Graduated 2002 (24 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients79
Services billed 242 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

  • Allegiance Hospice Hospice · Webster, TX · listed as Allegiance Hospice LLC
  • Hca Houston Healthcare Medical Center Hospital · Houston, TX
  • Altus Hospice Hospice · Sugar Land, TX
  • Trinity Hospice Hospice · San Antonio, TX
  • Trinity Hospice Hospice · Houston, TX

Other providers in Houston