Quick answers
- Which hospitals does Marc Otten work at?
- Medicare's official clinician data lists Marc Otten at 3 hospitals: Greenwich Hospital Association -, New York-Presbyterian Hospital and Stamford Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Marc Otten see patients?
- Medicare's clinician data lists 3 practice locations, including Stamford, CT, Harrison, NY and Greenwich, CT. Call before your visit to confirm the address.
- What is Marc Otten's specialty?
- Medicare lists Neurosurgery as the primary specialty.
- Does Marc Otten accept Medicare assignment?
- Yes. Medicare's clinician data says Marc Otten 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.
- Does Marc Otten offer telehealth?
- Medicare's clinician data says Marc Otten offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Marc Otten?
- (860) 347-7636, as listed in official Medicare / NPI Registry data.
- What is Marc Otten's NPI number?
- 1467611889. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Marc Otten works
Medicare's Facility Affiliation Data lists Marc Otten 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
- New York-Presbyterian HospitalNew York, NY · Acute Care Hospital · CCN 330101
- Stamford HospitalStamford, CT · Acute Care Hospital · CCN 070006
Practice locations
Addresses where Marc Otten is enrolled with Medicare (CMS data updated 2026-10-02).
- 5 High Ridge Park, Fl 3Stamford, CT 06905 (860) 347‑7636
- 500 Mamaroneck AveHarrison, NY 10528 (203) 869‑1145
- 6 Greenwich Office ParkGreenwich, CT 06831 (203) 869‑1145
Group practices
Medicare enrollment lists Marc Otten as a member of this group (CMS data updated 2026-10-02).
- Orthopaedic and Neurosurgery Specialists, PLLC259 clinicians in the group
Specialties
- Neurosurgeryprimary
Other neurosurgeons in Stamford
Clinicians with the same Medicare primary specialty in Stamford, CT — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Js Weill Medical College, Cornell University |
| Graduation year | 2006 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1467611889 |
| 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