Quick answers
- Which hospitals does Mark E. Kromer work at?
- Medicare's official clinician data lists Mark E. Kromer at 1 hospital: Portsmouth Regional Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark E. Kromer see patients?
- Medicare's clinician data lists 1 practice location in Portsmouth, NH. Call before your visit to confirm the address.
- What is Mark E. Kromer's specialty?
- Medicare lists General Surgery as the primary specialty.
- Does Mark E. Kromer accept Medicare assignment?
- Medicare's clinician data says Mark E. Kromer may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- What is the phone number for Mark E. Kromer?
- (603) 431-5242, as listed in official Medicare / NPI Registry data.
- What is Mark E. Kromer's NPI number?
- 1255302493. 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 E. Kromer works
Medicare's Facility Affiliation Data lists Mark E. Kromer at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Portsmouth Regional HospitalPortsmouth, NH · Acute Care Hospital · CCN 300029
Practice locations
Addresses where Mark E. Kromer is enrolled with Medicare (CMS data updated 2026-10-02).
- 330 Borthwick Ave, Suite 308Portsmouth, NH 03801 (603) 431‑5242
Group practices
Medicare enrollment lists Mark E. Kromer as a member of this group (CMS data updated 2026-10-02).
- Portsmouth Trauma and Surgical Care, LLC16 clinicians in the group
Specialties
- General Surgeryprimary
Other general surgeons in Portsmouth
Clinicians with the same Medicare primary specialty in Portsmouth, NH — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Medical College Of Wisconsin |
| Graduation year | 2003 |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1255302493 |
| 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