Quick answers
- Does Oscar J. Benavidez accept Medicare assignment?
- Yes. Medicare's clinician data says Oscar J. Benavidez accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- What is Oscar J. Benavidez's NPI number?
- 1386622603. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Oscar J. Benavidez works
Medicare's Facility Affiliation Data lists Oscar J. Benavidez at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Boston Children's HospitalBoston, MA · Children's Hospital · Emergency services: listed by Medicare · CCN 223302
Practice locations
Addresses where Oscar J. Benavidez is enrolled with Medicare (CMS data updated October 2, 2026).
- 300 Longwood AveBoston, MA 02115 (617) 355‑6000
- 311 Service RdEast Sandwich, MA 02537 (508) 833‑4000
- 33 Oak AveWorcester, MA 01605 (508) 757‑7300
- 55 Fruit StBoston, MA 02114 (617) 724‑0287
- 81 Highland AveSalem, MA 01970 (978) 741‑1200
Group practices
Medicare enrollment lists Oscar J. Benavidez as a member of these groups (CMS data updated October 2, 2026).
- Massachusetts General Physicians Organization Inc3,558 clinicians in the group
- Boston Childrens Heart Foundation Inc100 clinicians in the group
Specialties
- Pediatric Medicineprimary
Other pediatricians in Boston
Clinicians with the same Medicare primary specialty in Boston, MA — not a recommendation.
Other clinicians in Massachusetts General Physicians Organization Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Harvard Medical School |
| Graduation year | 1998 (28 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1386622603 |
| 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 October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- 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