Quick answers
- Where does Mark G. Creighton see patients?
- Medicare's clinician data lists 2 practice locations, including Greenlawn, NY and Nesconset, NY. Call before your visit to confirm the address.
- What is Mark G. Creighton's specialty?
- Medicare lists Orthopedic Surgery as the primary specialty.
- Does Mark G. Creighton accept Medicare assignment?
- Yes. Medicare's clinician data says Mark G. Creighton 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 G. Creighton?
- (631) 628-5000, as listed in official Medicare / NPI Registry data.
- What is Mark G. Creighton's NPI number?
- 1699704262. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Mark G. Creighton is enrolled with Medicare (CMS data updated 2026-10-02).
- 5 Cuba Hill RdGreenlawn, NY 11740 (631) 628‑5000
- 59 Southern BlvdNesconset, NY 11767 (631) 659‑1700
Group practices
Medicare enrollment lists Mark G. Creighton as a member of this group (CMS data updated 2026-10-02).
- North Shore Medical Group of the Mount Sinai School of Medicine331 clinicians in the group
Specialties
- Orthopedic Surgeryprimary
Other orthopedic surgeons in New York
Clinicians with the same Medicare primary specialty in New York — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Icahn School Of Medicine At Mount Sinai |
| Graduation year | 1990 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1699704262 |
| 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
- 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