Quick answers
- Where does Eliezer M. Vanallen see patients?
- Medicare's clinician data lists 1 practice location in Boston, MA. Call before your visit to confirm the address.
- What is Eliezer M. Vanallen's specialty?
- Medicare lists Medical Oncology as the primary specialty, and also Internal Medicine.
- Does Eliezer M. Vanallen accept Medicare assignment?
- Yes. Medicare's clinician data says Eliezer M. Vanallen 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 Eliezer M. Vanallen offer telehealth?
- Medicare's clinician data says Eliezer M. Vanallen offers telehealth services. Ask the office which visits can be done by video or phone.
- What is Eliezer M. Vanallen's NPI number?
- 1447484779. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Eliezer M. Vanallen is enrolled with Medicare (CMS data updated 2026-10-02).
- 450 Brookline AveBoston, MA 02215
Group practices
Medicare enrollment lists Eliezer M. Vanallen as a member of this group (CMS data updated 2026-10-02).
- Dana-Farber Cancer Institute, Inc.684 clinicians in the group
Specialties
- Medical Oncologyprimary
- Internal Medicinealso
Other oncologists in Boston
Clinicians with the same Medicare primary specialty in Boston, MA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2007 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1447484779 |
| 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
- 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