Quick answers
- Which hospitals does James B. Mark work at?
- Medicare's official clinician data lists James B. Mark at 2 hospitals: Geneva General Hospital and Soldiers and Sailors Memorial Hospital of Yates. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does James B. Mark see patients?
- Medicare's clinician data lists 2 practice locations, including Keuka Park, NY and Geneva, NY. Call before your visit to confirm the address.
- What is James B. Mark's specialty?
- Medicare lists Sports Medicine as the primary specialty, and also Orthopedic Surgery.
- Does James B. Mark accept Medicare assignment?
- Yes. Medicare's clinician data says James B. Mark 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 James B. Mark?
- (315) 279-5368, as listed in official Medicare / NPI Registry data.
- What is James B. Mark's NPI number?
- 1164443545. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where James B. Mark works
Medicare's Facility Affiliation Data lists James B. Mark at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Geneva General HospitalGeneva, NY · Acute Care Hospital · CCN 330058
- Soldiers and Sailors Memorial Hospital of YatesPenn Yan, NY · Critical Access Hospital · CCN 331314
Practice locations
Addresses where James B. Mark is enrolled with Medicare (CMS data updated 2026-10-02).
- 141 Central AveKeuka Park, NY 14478 (315) 279‑5368
- 789 Pre Emption Rd, Suite 600Geneva, NY 14456
Group practices
Medicare enrollment lists James B. Mark as a member of this group (CMS data updated 2026-10-02).
- FLH Medical PC46 clinicians in the group
Specialties
- Sports Medicineprimary
- Orthopedic Surgeryalso
Other sports medicine doctors in New York
Clinicians with the same Medicare primary specialty in New York — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Jefferson Medical College Of Thomas Jefferson University |
| Graduation year | 1986 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1164443545 |
| 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