Quick answers
- Which hospitals does John P. Brennan work at?
- Medicare's official clinician data lists John P. Brennan at 4 hospitals: Elliot Hospital, Exeter Hospital Inc, Lahey Hospital & Medical Center, Burlington and Portsmouth Regional Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John P. Brennan see patients?
- Medicare's clinician data lists 6 practice locations, including Manchester, NH and Exeter, NH. Call before your visit to confirm the address.
- What is John P. Brennan's specialty?
- Medicare lists Pulmonary Disease as the primary specialty, and also Critical Care (Intensivists).
- Does John P. Brennan accept Medicare assignment?
- Yes. Medicare's clinician data says John P. Brennan 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 John P. Brennan offer telehealth?
- Medicare's clinician data says John P. Brennan offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for John P. Brennan?
- (603) 929-1195, as listed in official Medicare / NPI Registry data.
- What is John P. Brennan's NPI number?
- 1851339071. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where John P. Brennan works
Medicare's Facility Affiliation Data lists John P. Brennan at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Elliot HospitalManchester, NH · Acute Care Hospital · CCN 300012
- Exeter Hospital IncExeter, NH · Acute Care Hospital · CCN 300023
- Lahey Hospital & Medical Center, BurlingtonBurlington, MA · Acute Care Hospital · CCN 220171
- Portsmouth Regional HospitalPortsmouth, NH · Acute Care Hospital · CCN 300029
Practice locations
Addresses where John P. Brennan is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 6; the Medicare profile lists all.
- 1 Elliot WayManchester, NH 03103
- 1 Hampton Rd, Suite A306Exeter, NH 03833 (603) 929‑1195
- 3 Alumni DrExeter, NH 03833
- 5 Alumni DrExeter, NH 03833 (603) 580‑6457
- 5 Alumni Dr, Fl 2Exeter, NH 03833 (603) 580‑7525
Group practices
Medicare enrollment lists John P. Brennan as a member of these groups (CMS data updated 2026-10-02).
- Elliot Professional Services427 clinicians in the group
- Core Physicians LLC289 clinicians in the group
Specialties
Other pulmonologists in New Hampshire
Clinicians with the same Medicare primary specialty in New Hampshire — not a recommendation.
Clinician information
| Medical school | Tufts University School Of Medicine |
|---|---|
| Graduation year | 2002 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1851339071 |
| 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