Quick answers
- Where does Mark J. McKeen see patients?
- Medicare's clinician data lists 2 practice locations, including Danvers, MA and Boston, MA. Call before your visit to confirm the address.
- What is Mark J. McKeen's specialty?
- Medicare lists Anesthesiology as the primary specialty.
- Does Mark J. McKeen accept Medicare assignment?
- Yes. Medicare's clinician data says Mark J. McKeen 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 J. McKeen?
- (978) 882-6100, as listed in official Medicare / NPI Registry data.
- What is Mark J. McKeen's NPI number?
- 1093975252. 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 J. McKeen is enrolled with Medicare (CMS data updated 2026-10-02).
- 102 Endicott St, Mgh North Shore MedicalDanvers, MA 01923 (978) 882‑6100
- 55 Fruit StBoston, MA 02114 (617) 724‑0287
Group practices
Medicare enrollment lists Mark J. McKeen as a member of this group (CMS data updated 2026-10-02).
- Massachusetts General Physicians Organization Inc3,558 clinicians in the group
Specialties
- Anesthesiologyprimary
Other anesthesiologists in Danvers
Clinicians with the same Medicare primary specialty in Danvers, MA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Massachusetts Medical School |
| Graduation year | 2008 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1093975252 |
| 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