Quick answers
- Which hospitals does Alexandra L. Geffrey work at?
- Medicare's official clinician data lists Alexandra L. Geffrey at 1 hospital: Massachusetts General Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Alexandra L. Geffrey see patients?
- Medicare's clinician data lists 1 practice location in Seattle, WA. Call before your visit to confirm the address.
- What is Alexandra L. Geffrey's specialty?
- Medicare lists Pediatric Medicine as the primary specialty.
- Does Alexandra L. Geffrey accept Medicare assignment?
- Medicare's clinician data says Alexandra L. Geffrey may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- What is Alexandra L. Geffrey's NPI number?
- 1245790591. 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 L. Geffrey works
Medicare's Facility Affiliation Data lists Alexandra L. Geffrey at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Massachusetts General HospitalBoston, MA · Acute Care Hospital · CCN 220071
Practice locations
Addresses where Alexandra L. Geffrey is enrolled with Medicare (CMS data updated 2026-10-02).
- PO Box, Suite 5371Seattle, WA 98145
Specialties
- Pediatric Medicineprimary
Other pediatricians in Seattle
Clinicians with the same Medicare primary specialty in Seattle, WA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of California, Irvine, California College Of Medicine |
| Graduation year | 2019 |
| Gender (as listed) | Female |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1245790591 |
| 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