Quick answers
- Which hospitals does Mark Kelemen work at?
- Medicare's official clinician data lists Mark Kelemen at 5 hospitals: Catholic Medical Center, Greater Baltimore Medical Center, Johns Hopkins Bayview Medical Center, MedStar Franklin Square Medical Center and The Johns Hopkins Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark Kelemen see patients?
- Medicare's clinician data lists 10 practice locations, including Manchester, NH, Baltimore, MD and Middle River, MD. Call before your visit to confirm the address.
- What is Mark Kelemen's specialty?
- Medicare lists Cardiovascular Disease (Cardiology) as the primary specialty.
- Does Mark Kelemen accept Medicare assignment?
- Medicare's clinician data says Mark Kelemen may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- Does Mark Kelemen offer telehealth?
- Medicare's clinician data says Mark Kelemen offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Mark Kelemen?
- (603) 669-0413, as listed in official Medicare / NPI Registry data.
- What is Mark Kelemen's NPI number?
- 1902850548. 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 Kelemen works
Medicare's Facility Affiliation Data lists Mark Kelemen at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Catholic Medical CenterManchester, NH · Acute Care Hospital · CCN 300034
- Greater Baltimore Medical CenterBaltimore, MD · Acute Care Hospital · CCN 210044
- Johns Hopkins Bayview Medical CenterBaltimore, MD · Acute Care Hospital · CCN 210029
- MedStar Franklin Square Medical CenterRosedale, MD · Acute Care Hospital · CCN 210015
- The Johns Hopkins HospitalBaltimore, MD · Acute Care Hospital · CCN 210009
Practice locations
Addresses where Mark Kelemen is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 10; the Medicare profile lists all.
- 100 McGregor St, StreetbManchester, NH 03102 (603) 669‑0413
- 4940 Eastern AveBaltimore, MD 21224
- 5300 Alpha Commons Dr, Fl 1Baltimore, MD 21224 (410) 847‑3770
- 5501 Hopkins Bayview CirBaltimore, MD 21224
- 5505 Hopkins Bayview CirBaltimore, MD 21224
Group practices
Medicare enrollment lists Mark Kelemen as a member of these groups (CMS data updated 2026-10-02).
- Johns Hopkins University2,909 clinicians in the group
- Appledore Medical Group Inc196 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in New Hampshire →
Other cardiologists in Manchester
Clinicians with the same Medicare primary specialty in Manchester, NH — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Johns Hopkins University School Of Medicine |
| Graduation year | 1990 |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1902850548 |
| 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