Quick answers
- Where does Ariel Warren see patients?
- Medicare's clinician data lists 2 practice locations, including Belmont, MA and Newton, MA. Call before your visit to confirm the address.
- What is Ariel Warren's specialty?
- Medicare lists Nurse Practitioner as the primary specialty.
- Does Ariel Warren accept Medicare assignment?
- Yes. Medicare's clinician data says Ariel Warren 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 Ariel Warren?
- (617) 855-3450, as listed in official Medicare / NPI Registry data.
- What is Ariel Warren's NPI number?
- 1538661582. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Ariel Warren is enrolled with Medicare (CMS data updated 2026-10-02).
- 115 Mill StBelmont, MA 02478 (617) 855‑3450
- 2014 Washington StNewton, MA 02462 (617) 243‑6000
Group practices
Medicare enrollment lists Ariel Warren as a member of these groups (CMS data updated 2026-10-02).
- Mass General Brigham Medical Group Suburban Massachusetts Inc602 clinicians in the group
- The McLean Hospital Corporation192 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Belmont
Clinicians with the same Medicare primary specialty in Belmont, MA — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2017 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1538661582 |
| 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 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