Quick answers
- Which hospitals does Rija Ahmad work at?
- Medicare's official clinician data lists Rija Ahmad at 2 hospitals: Memorial Hermann Katy Hospital and Robert Wood Johnson University Hospital at Hamilton. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Rija Ahmad see patients?
- Medicare's clinician data lists 3 practice locations, including Hamilton, NJ, Katy, TX and Houston, TX. Call before your visit to confirm the address.
- What is Rija Ahmad's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Rija Ahmad accept Medicare assignment?
- Yes. Medicare's clinician data says Rija Ahmad accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Rija Ahmad?
- (609) 586-7900, as listed in official Medicare / NPI Registry data.
- What is Rija Ahmad's NPI number?
- 1669056297. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Rija Ahmad works
Medicare's Facility Affiliation Data lists Rija Ahmad at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Memorial Hermann Katy HospitalKaty, TX · Acute Care Hospital · CCN 450847
- Robert Wood Johnson University Hospital at HamiltonHamilton, NJ · Acute Care Hospital · CCN 310110
Practice locations
Addresses where Rija Ahmad is enrolled with Medicare (CMS data updated 2026-10-02).
- 1 Hamilton Health PlHamilton, NJ 08690 (609) 586‑7900
- 23900 Katy FwyKaty, TX 77494 (281) 644‑8111
- 915 Gessner Rd, Suite 100Houston, TX 77024 (713) 242‑2222
Group practices
Medicare enrollment lists Rija Ahmad as a member of these groups (CMS data updated 2026-10-02).
- RWJBH Emergency Medicine Associates, LLC848 clinicians in the group
- Memorial Hermann Medical Group762 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Hamilton
Clinicians with the same Medicare primary specialty in Hamilton, NJ — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2019 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1669056297 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- 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