Quick answers
- Which hospitals does Grissel Rios work at?
- Medicare's official clinician data lists Grissel Rios at 1 hospital: Auxilio Mutuo Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Grissel Rios see patients?
- Medicare's clinician data lists 1 practice location in Rio Piedras, PR. Call before your visit to confirm the address.
- What is Grissel Rios's specialty?
- Medicare lists Rheumatology as the primary specialty, and also Internal Medicine.
- Does Grissel Rios accept Medicare assignment?
- Yes. Medicare's clinician data says Grissel Rios 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 Grissel Rios?
- (787) 758-7910, as listed in official Medicare / NPI Registry data.
- What is Grissel Rios's NPI number?
- 1821072935. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Grissel Rios works
Medicare's Facility Affiliation Data lists Grissel Rios at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Auxilio Mutuo HospitalSan Juan, PR · Acute Care Hospital · CCN 400016
Practice locations
Addresses where Grissel Rios is enrolled with Medicare (CMS data updated 2026-10-02).
- Ave Americo Miranda, Suite 200 Ctro Comercial Reparto MetroploliRio Piedras, PR 00921 (787) 758‑7910
Group practices
Medicare enrollment lists Grissel Rios as a member of this group (CMS data updated 2026-10-02).
- Recinto de Ciencias Medicas247 clinicians in the group
Specialties
- Rheumatologyprimary
- Internal Medicinealso
Other rheumatologists in Rio Piedras
Clinicians with the same Medicare primary specialty in Rio Piedras, PR — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Puerto Rico School Of Medicine |
| Graduation year | 1996 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1821072935 |
| 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