Quick answers
- Does Mary S. Guirguis accept Medicare assignment?
- Yes. Medicare's clinician data says Mary S. Guirguis accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Mary S. Guirguis see?
- In 2024, CMS data shows 586 Original Medicare patients and 1,284 services for Mary S. Guirguis. This counts Original Medicare only and measures volume, not quality.
- What is Mary S. Guirguis's NPI number?
- 1326481607. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Mary S. Guirguis, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 586 |
|---|---|
| Services billed to Medicare | 1,284 |
| Different services or procedures | 25 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Screening mammography (77067)359 services
- Screening 3d breast mammography (77063)348 services
- Complete ultrasound scan of 1 breast (76641)124 services
- Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066) (G0279)107 services
- Ultrasound scan of chest (76604)87 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High cholesterol75%
- High blood pressure70%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)61%
- Arthritis46%
- Osteoporosis33%
- Anxiety26%
Practice locations
Addresses where Mary S. Guirguis is enrolled with Medicare (CMS data updated October 2, 2026).
- 2130 W Holcombe Blvd, Univ of Tx M D Ande Life Sciences PlazaHouston, TX 77030 (713) 592‑5433
- 2240 Gulf Fwy S, UTMB Health League City HospitalLeague City, TX 77573 (409) 772‑1011
- 2280 Gulf Fwy SLeague City, TX 77573 (713) 563‑0670
- 9922 Louetta RdHouston, TX 77070 (713) 794‑5500
Group practices
Medicare enrollment lists Mary S. Guirguis as a member of this group (CMS data updated October 2, 2026).
- Physicians Referral Service2,765 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
- Interventional Radiologyalso
- Nuclear Medicinealso
Other radiologists in Houston
Clinicians with the same Medicare primary specialty in Houston, TX — not a recommendation.
Other clinicians in Physicians Referral Service
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Texas Medical School At Houston |
| Graduation year | 2016 (10 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1326481607 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians