Quick answers
- Which hospitals does C R. Mackenzie work at?
- Medicare's official clinician data lists C R. Mackenzie at 1 hospital: Hospital for Special Surgery. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does C R. Mackenzie see patients?
- Medicare's clinician data lists 2 practice locations, including Hudson, NY and New York, NY. Call before your visit to confirm the address.
- What is C R. Mackenzie's specialty?
- Medicare lists Rheumatology as the primary specialty, and also Internal Medicine.
- Does C R. Mackenzie accept Medicare assignment?
- Medicare's clinician data says C R. Mackenzie 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 C R. Mackenzie?
- (800) 479-7695, as listed in official Medicare / NPI Registry data.
- What is C R. Mackenzie's NPI number?
- 1750344289. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where C R. Mackenzie works
Medicare's Facility Affiliation Data lists C R. Mackenzie at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Hospital for Special SurgeryNew York, NY · Acute Care Hospital · CCN 330270
Practice locations
Addresses where C R. Mackenzie is enrolled with Medicare (CMS data updated 2026-10-02).
- 125 Harry Howard AveHudson, NY 12534 (800) 479‑7695
- 535 E 70th StNew York, NY 10021 (212) 774‑7598
Group practices
Medicare enrollment lists C R. Mackenzie as a member of these groups (CMS data updated 2026-10-02).
- Select PT, Ot and SLP Rehabilitation Ny, PLLC301 clinicians in the group
- New York Society for the Relief of Ruptured and Crippled Maintaining116 clinicians in the group
Specialties
- Rheumatologyprimary
- Internal Medicinealso
Other rheumatologists in Hudson
Clinicians with the same Medicare primary specialty in Hudson, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Js Weill Medical College, Cornell University |
| Graduation year | 1983 |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1750344289 |
| 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