Alyssa N. Rivera, AA
Anesthesiologist Assistant
At a glance
- Years since graduation
- 3
- In the NPI registry since
- 2023
The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. What an NPI is
Education and training
- 2023Registered with an NPI (national billing number; not a license date)
Medicare’s Care Compare data doesn’t list this clinician’s medical school. Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).
Specialties and state licenses
-
Anesthesiologist Assistant primary
OH license 67.000604
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- Ssm Health Saint Louis University Hospital Saint Louis, MO
- Ssm Health St Mary's Hospital - St Louis Saint Louis, MO
Medical groups
- Ssm Health Care Group (940 clinicians)
- Ssm Health Slu Hospital Anesthesia Physician Billing LLC (102 clinicians)
Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.
Payments from drug and device companies
In 2025, 1 companies reported 1 payments worth $39.19 in total to this clinician.
| Becton, Dickinson and Company | $39.19 |
|---|
| Food and Beverage | $39.19 |
|---|
From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.