Quick answers
- Which hospitals does Alyssa G. Rieber work at?
- Medicare's official clinician data lists Alyssa G. Rieber at 4 hospitals: Heart of Texas Memorial Hospital, Hill Country Memorial Hospital, Kimble Hospital and Peterson Regional Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Alyssa G. Rieber see patients?
- Medicare's clinician data lists 1 practice location in Fredericksburg, TX. Call before your visit to confirm the address.
- What is Alyssa G. Rieber's specialty?
- Medicare lists Hematology/Oncology as the primary specialty, and also Internal Medicine and Medical Oncology.
- Does Alyssa G. Rieber accept Medicare assignment?
- Yes. Medicare's clinician data says Alyssa G. Rieber 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.
- Does Alyssa G. Rieber offer telehealth?
- Medicare's clinician data says Alyssa G. Rieber offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Alyssa G. Rieber?
- (830) 990-0255, as listed in official Medicare / NPI Registry data.
- What is Alyssa G. Rieber's NPI number?
- 1639265796. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Alyssa G. Rieber works
Medicare's Facility Affiliation Data lists Alyssa G. Rieber at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Heart of Texas Memorial HospitalBrady, TX · Critical Access Hospital · CCN 451348
- Hill Country Memorial HospitalFredericksburg, TX · Acute Care Hospital · CCN 450604
- Kimble HospitalJunction, TX · Critical Access Hospital · CCN 451306
- Peterson Regional Medical CenterKerrville, TX · Acute Care Hospital · CCN 450007
Practice locations
Addresses where Alyssa G. Rieber is enrolled with Medicare (CMS data updated 2026-10-02).
- 506 W Windcrest St, Suite 300Fredericksburg, TX 78624 (830) 990‑0255
Group practices
Medicare enrollment lists Alyssa G. Rieber as a member of this group (CMS data updated 2026-10-02).
- Texas Oncology PA1,014 clinicians in the group
Specialties
- Hematology/Oncologyprimary
- Internal Medicinealso
- Medical Oncologyalso
Other hematologist-oncologists in Texas
Clinicians with the same Medicare primary specialty in Texas — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Alabama School Of Medicine |
| Graduation year | 2001 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1639265796 |
| 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