Quick answers
- Which hospitals does Mark Brown work at?
- Medicare's official clinician data lists Mark Brown at 2 hospitals: Emerson Hospital - and Massachusetts Eye and Ear Infirmary -. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark Brown see patients?
- Medicare's clinician data lists 1 practice location in Concord, MA. Call before your visit to confirm the address.
- What is Mark Brown's specialty?
- Medicare lists Otolaryngology as the primary specialty.
- Does Mark Brown accept Medicare assignment?
- Yes. Medicare's clinician data says Mark Brown 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 Mark Brown offer telehealth?
- Medicare's clinician data says Mark Brown offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Mark Brown?
- (978) 369-8780, as listed in official Medicare / NPI Registry data.
- What is Mark Brown's NPI number?
- 1023024395. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mark Brown works
Medicare's Facility Affiliation Data lists Mark Brown at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Emerson Hospital -W Concord, MA · Acute Care Hospital · CCN 220084
- Massachusetts Eye and Ear Infirmary -Boston, MA · Acute Care Hospital · CCN 220075
Practice locations
Addresses where Mark Brown is enrolled with Medicare (CMS data updated 2026-10-02).
- 54 Baker Ave Ext, Suite 303Concord, MA 01742 (978) 369‑8780
Group practices
Medicare enrollment lists Mark Brown as a member of this group (CMS data updated 2026-10-02).
- Massachusetts Eye and Ear Associates, Inc433 clinicians in the group
Specialties
- Otolaryngologyprimary
Other ENT doctors in Massachusetts
Clinicians with the same Medicare primary specialty in Massachusetts — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Baylor College Of Medicine |
| Graduation year | 1989 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1023024395 |
| 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