NADIA HAJ-ISMAIL
NPI 1043743727
Internal Medicine in Houston, TX
About Nadia Haj-ismail NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
NADIA HAJ-ISMAIL (NPI 1043743727) is an individual internal medicine provider in Houston, Texas, licensed in Texas (R9975) and active in the NPI registry since April 2017. She is enrolled in Medicare PECOS, is affiliated with Harris Health System, and maintains a secondary practice location in Houston.
NPPES Registry Identity
Specialties & Licenses 3
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.
Secondary Practice Location 1
Accepted 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
Nadia Haj-ismail 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.
Areas of Expertise CMS Part B claims 2
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Harris Health System
Acute Care Hospitals · Houston, TXPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 77026 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Referred Medical Equipment & Supplies CMS DME claims 2
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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.
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 Nadia Haj-ismail's NPI number?
The NPI number for Nadia Haj-ismail is 1043743727. It was assigned to this individual provider in the NPPES registry on April 9, 2017.
Where is Nadia Haj-ismail located?
Nadia Haj-ismail practices at 5656 Kelley St, Houston, TX 77026. The listed phone number is (713) 566-4489.
What is Nadia Haj-ismail's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Nadia Haj-ismail enrolled in Medicare?
Yes. Nadia Haj-ismail 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 Nadia Haj-ismail accept?
Health plans from Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter from Superior HealthPlan and Ambetter of Oklahoma and 1 other insurer list Nadia Haj-ismail 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.
Is Nadia Haj-ismail affiliated with any hospitals?
According to CMS data, Nadia Haj-ismail is affiliated with Harris Health System.
When was this NPI record last updated?
The NPPES record for Nadia Haj-ismail was last updated on September 17, 2025. NPI Profile syncs with the weekly NPPES data releases published by CMS.
