Quick answers
- Which hospitals does Alexandra Terwilliger work at?
- Medicare's official clinician data lists Alexandra Terwilliger at 2 hospitals: Emerson Hospital - and UMass Memorial Healthalliance Hospitals. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Alexandra Terwilliger see patients?
- Medicare's clinician data lists 2 practice locations, including Mattapan, MA and Lunenburg, MA. Call before your visit to confirm the address.
- What is Alexandra Terwilliger's specialty?
- Medicare lists Nurse Practitioner as the primary specialty.
- Does Alexandra Terwilliger accept Medicare assignment?
- Yes. Medicare's clinician data says Alexandra Terwilliger 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 Alexandra Terwilliger offer telehealth?
- Medicare's clinician data says Alexandra Terwilliger offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Alexandra Terwilliger?
- (617) 201-1002, as listed in official Medicare / NPI Registry data.
- What is Alexandra Terwilliger's NPI number?
- 1700653888. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Alexandra Terwilliger works
Medicare's Facility Affiliation Data lists Alexandra Terwilliger at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Emerson Hospital -W Concord, MA · Acute Care Hospital · CCN 220084
- UMass Memorial Healthalliance HospitalsLeominster, MA · Acute Care Hospital · CCN 220001
Practice locations
Addresses where Alexandra Terwilliger is enrolled with Medicare (CMS data updated 2026-10-02).
- 1192 Blue Hill AveMattapan, MA 02126 (617) 201‑1002
- 324 Massachusetts AveLunenburg, MA 01462 (978) 582‑4587
Group practices
Medicare enrollment lists Alexandra Terwilliger as a member of these groups (CMS data updated 2026-10-02).
- Revere Medical of Massachusetts PC111 clinicians in the group
- HKD Outreach PC12 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Mattapan
Clinicians with the same Medicare primary specialty in Mattapan, MA — not a recommendation.
Clinician information
| Graduation year | 2023 |
|---|---|
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1700653888 |
| 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