Quick answers
- Which hospitals does Mark Kreimer work at?
- Medicare's official clinician data lists Mark Kreimer at 4 hospitals: Boca Raton Regional Hospital, Lenox Hill Hospital, Palmetto General Hospital and St John's Riverside Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark Kreimer see patients?
- Medicare's clinician data lists 7 practice locations, including New York, NY, Boca Raton, FL and Dobbs Ferry, NY. Call before your visit to confirm the address.
- What is Mark Kreimer's specialty?
- Medicare lists Emergency Medicine as the primary specialty.
- Does Mark Kreimer accept Medicare assignment?
- Yes. Medicare's clinician data says Mark Kreimer 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 Kreimer?
- (212) 434-2140, as listed in official Medicare / NPI Registry data.
- What is Mark Kreimer's NPI number?
- 1255735221. 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 Kreimer works
Medicare's Facility Affiliation Data lists Mark Kreimer at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Boca Raton Regional HospitalBoca Raton, FL · Acute Care Hospital · CCN 100168
- Lenox Hill HospitalNew York, NY · Acute Care Hospital · CCN 330119
- Palmetto General HospitalHialeah, FL · Acute Care Hospital · CCN 100187
- St John's Riverside HospitalYonkers, NY · Acute Care Hospital · CCN 330208
Practice locations
Addresses where Mark Kreimer is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 7; the Medicare profile lists all.
- 100 E 77th StNew York, NY 10075 (212) 434‑2140
- 10125 Glades RdBoca Raton, FL 33498 (561) 309‑7815
- 128 Ashford AveDobbs Ferry, NY 10522 (914) 964‑4370
- 2001 W 66th StHialeah, FL 33016 (305) 364‑2100
- 255 Lafayette AveSuffern, NY 10901 (845) 368‑5000
Group practices
Medicare enrollment lists Mark Kreimer as a member of these groups (CMS data updated 2026-10-02).
- North Shore-Lij Medical PC6,440 clinicians in the group
- Paragon Contracting Services LLC414 clinicians in the group
- Physicians Medical Associates New York PC102 clinicians in the group
- Dobbs Ferry Emergency Medicine, PC39 clinicians in the group
- Emed LLP28 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in New York
Clinicians with the same Medicare primary specialty in New York, NY — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | New York College Of Osteo Medicine Of New York Institute Of Technology |
| Graduation year | 2014 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1255735221 |
| 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