Quick answers
- Which hospitals does Sandra S. Yoon work at?
- Medicare's official clinician data lists Sandra S. Yoon at 1 hospital: Signature Healthcare Brockton Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Sandra S. Yoon see patients?
- Medicare's clinician data lists 3 practice locations, including Needham, MA, Boston, MA and Brockton, MA. Call before your visit to confirm the address.
- What is Sandra S. Yoon's specialty?
- Medicare lists Emergency Medicine as the primary specialty.
- Does Sandra S. Yoon accept Medicare assignment?
- Yes. Medicare's clinician data says Sandra S. Yoon 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 Sandra S. Yoon?
- (781) 726-4800, as listed in official Medicare / NPI Registry data.
- What is Sandra S. Yoon's NPI number?
- 1164402954. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Sandra S. Yoon works
Medicare's Facility Affiliation Data lists Sandra S. Yoon at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Signature Healthcare Brockton HospitalBrockton, MA · Acute Care Hospital · CCN 220052
Practice locations
Addresses where Sandra S. Yoon is enrolled with Medicare (CMS data updated 2026-10-02).
- 100 2nd AveNeedham, MA 02494 (781) 726‑4800
- 133 Brookline AveBoston, MA 02215 (617) 421‑1000
- 680 Centre StBrockton, MA 02302 (508) 941‑7000
Group practices
Medicare enrollment lists Sandra S. Yoon as a member of these groups (CMS data updated 2026-10-02).
- Atrius Health Inc1,222 clinicians in the group
- Brockton Hospital, Inc.35 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Needham
Clinicians with the same Medicare primary specialty in Needham, MA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Wayne State University School Of Medicine |
| Graduation year | 2002 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1164402954 |
| 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