Quick answers
- Which hospitals does Mark J. Klion work at?
- Medicare's official clinician data lists Mark J. Klion at 2 hospitals: St Barnabas Hospital and White Plains Hospital Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark J. Klion see patients?
- Medicare's clinician data lists 2 practice locations, including White Plains, NY and Bronx, NY. Call before your visit to confirm the address.
- What is Mark J. Klion's specialty?
- Medicare lists Orthopedic Surgery as the primary specialty, and also Sports Medicine.
- Does Mark J. Klion accept Medicare assignment?
- Yes. Medicare's clinician data says Mark J. Klion 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. Klion?
- (914) 946-1010, as listed in official Medicare / NPI Registry data.
- What is Mark J. Klion's NPI number?
- 1972610798. 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 J. Klion works
Medicare's Facility Affiliation Data lists Mark J. Klion at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- St Barnabas HospitalBronx, NY · Acute Care Hospital · CCN 330399
- White Plains Hospital CenterWhite Plains, NY · Acute Care Hospital · CCN 330304
Practice locations
Addresses where Mark J. Klion is enrolled with Medicare (CMS data updated 2026-10-02).
- 222 Westchester Ave, Suite 101White Plains, NY 10604 (914) 946‑1010
- 4422 3rd AveBronx, NY 10457 (718) 960‑6214
Group practices
Medicare enrollment lists Mark J. Klion as a member of these groups (CMS data updated 2026-10-02).
- White Plains Physician Services PC386 clinicians in the group
- SBH Physicians PC175 clinicians in the group
Specialties
- Orthopedic Surgeryprimary
- Sports Medicinealso
Other orthopedic surgeons in White Plains
Clinicians with the same Medicare primary specialty in White Plains, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Icahn School Of Medicine At Mount Sinai |
| Graduation year | 1989 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1972610798 |
| 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