Quick answers
- Which hospitals does Benjamin Grajales work at?
- Medicare's official clinician data lists Benjamin Grajales at 1 hospital: UMass Memorial Healthalliance Hospitals. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Benjamin Grajales see patients?
- Medicare's clinician data lists 2 practice locations, including Leominster, MA. Call before your visit to confirm the address.
- What is Benjamin Grajales's specialty?
- Medicare lists General Surgery as the primary specialty.
- Does Benjamin Grajales accept Medicare assignment?
- Yes. Medicare's clinician data says Benjamin Grajales 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 Benjamin Grajales?
- (978) 534-1534, as listed in official Medicare / NPI Registry data.
- What is Benjamin Grajales's NPI number?
- 1427097419. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Benjamin Grajales works
Medicare's Facility Affiliation Data lists Benjamin Grajales at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- UMass Memorial Healthalliance HospitalsLeominster, MA · Acute Care Hospital · CCN 220001
Practice locations
Addresses where Benjamin Grajales is enrolled with Medicare (CMS data updated 2026-10-02).
- 50 Memorial Dr, Ste. 204Leominster, MA 01453
- 50 Memorial Dr, Suite 204Leominster, MA 01453 (978) 534‑1534
Specialties
- General Surgeryprimary
Other general surgeons in Massachusetts
Clinicians with the same Medicare primary specialty in Massachusetts — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Harvard Medical School |
| Graduation year | 1987 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1427097419 |
| 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