Quick answers
- Which hospitals does Wassim Assaf work at?
- Medicare's official clinician data lists Wassim Assaf at 2 hospitals: Athol Memorial Hospital and Heywood Hospital -. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Wassim Assaf see patients?
- Medicare's clinician data lists 1 practice location in Auburn, MA. Call before your visit to confirm the address.
- What is Wassim Assaf's specialty?
- Medicare lists Internal Medicine as the primary specialty, and also Sleep Medicine.
- Does Wassim Assaf accept Medicare assignment?
- Yes. Medicare's clinician data says Wassim Assaf 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.
- Does Wassim Assaf offer telehealth?
- Medicare's clinician data says Wassim Assaf offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Wassim Assaf?
- (774) 772-7058, as listed in official Medicare / NPI Registry data.
- What is Wassim Assaf's NPI number?
- 1548400278. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Wassim Assaf works
Medicare's Facility Affiliation Data lists Wassim Assaf at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Athol Memorial HospitalAthol, MA · Critical Access Hospital · CCN 221303
- Heywood Hospital -Gardner, MA · Acute Care Hospital · CCN 220095
Practice locations
Addresses where Wassim Assaf is enrolled with Medicare (CMS data updated 2026-10-02).
- 48 Auburn St, Suite 1Auburn, MA 01501 (774) 772‑7058
Group practices
Medicare enrollment lists Wassim Assaf as a member of this group (CMS data updated 2026-10-02).
- Assaf Inc2 clinicians in the group
Specialties
- Internal Medicineprimary
- Sleep Medicinealso
Other internal medicine doctors in Auburn
Clinicians with the same Medicare primary specialty in Auburn, MA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2004 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1548400278 |
| 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