Quick answers
- Where does Mark D. Dexter see patients?
- Medicare's clinician data lists 1 practice location in Boston, MA. Call before your visit to confirm the address.
- What is Mark D. Dexter's specialty?
- Medicare lists Critical Care (Intensivists) as the primary specialty, and also Pediatric Medicine.
- Does Mark D. Dexter accept Medicare assignment?
- Yes. Medicare's clinician data says Mark D. Dexter 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 Mark D. Dexter?
- (617) 355-6000, as listed in official Medicare / NPI Registry data.
- What is Mark D. Dexter's NPI number?
- 1033408513. 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 Mark D. Dexter is enrolled with Medicare (CMS data updated 2026-10-02).
- 300 Longwood AveBoston, MA 02115 (617) 355‑6000
Group practices
Medicare enrollment lists Mark D. Dexter as a member of this group (CMS data updated 2026-10-02).
- Children's Hospital Pediatric Associates, Inc328 clinicians in the group
Specialties
Find other Critical Care (Intensivists) doctors in Massachusetts →
Other critical care doctors in Boston
Clinicians with the same Medicare primary specialty in Boston, MA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Eastern Virginia Medical School |
| Graduation year | 2011 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1033408513 |
| 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