Quick answers
- Which hospitals does Christopher J. Mattern work at?
- Medicare's official clinician data lists Christopher J. Mattern at 4 hospitals: Greenwich Hospital Association -, Hospital for Special Surgery, Northern Westchester Hospital and Phelps Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Christopher J. Mattern see patients?
- Medicare's clinician data lists 4 practice locations, including Palm Beach Gardens, FL, Hudson, NY and Purchase, NY. Call before your visit to confirm the address.
- What is Christopher J. Mattern's specialty?
- Medicare lists Orthopedic Surgery as the primary specialty.
- Does Christopher J. Mattern accept Medicare assignment?
- Medicare's clinician data says Christopher J. Mattern 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 Christopher J. Mattern?
- (800) 479-7695, as listed in official Medicare / NPI Registry data.
- What is Christopher J. Mattern's NPI number?
- 1588874861. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Christopher J. Mattern works
Medicare's Facility Affiliation Data lists Christopher J. Mattern at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Greenwich Hospital Association -Greenwich, CT · Acute Care Hospital · CCN 070018
- Hospital for Special SurgeryNew York, NY · Acute Care Hospital · CCN 330270
- Northern Westchester HospitalMount Kisco, NY · Acute Care Hospital · CCN 330162
- Phelps HospitalSleepy Hollow, NY · Acute Care Hospital · CCN 330261
Practice locations
Addresses where Christopher J. Mattern is enrolled with Medicare (CMS data updated 2026-10-02).
- 105 Ballenisle CirclePalm Beach Gardens, FL 33418
- 125 Harry Howard AveHudson, NY 12534 (800) 479‑7695
- 3030 Westchester AvePurchase, NY 10577 (914) 831‑4100
- 5 Perryridge RdGreenwich, CT 06830 (203) 863‑3000
Group practices
Medicare enrollment lists Christopher J. Mattern as a member of these groups (CMS data updated 2026-10-02).
- Westchester Medical Group, P.C415 clinicians in the group
- Select PT, Ot and SLP Rehabilitation Ny, PLLC301 clinicians in the group
- Bit Physical Therapy146 clinicians in the group
Specialties
- Orthopedic Surgeryprimary
Other orthopedic surgeons in Palm Beach Gardens
Clinicians with the same Medicare primary specialty in Palm Beach Gardens, FL — not a recommendation.
Clinician information
| Medical school | Columbia University College Of Physicians And Surgeons |
|---|---|
| Graduation year | 2004 |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1588874861 |
| 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