Quick answers
- Where does Mark C. Grieb see patients?
- Medicare's clinician data lists 2 practice locations, including Wilmington, NC and Greenville, NC. Call before your visit to confirm the address.
- What is Mark C. Grieb's specialty?
- Medicare lists Anesthesiology as the primary specialty, and also Pain Management.
- Does Mark C. Grieb accept Medicare assignment?
- Yes. Medicare's clinician data says Mark C. Grieb 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 C. Grieb?
- (910) 763-4555, as listed in official Medicare / NPI Registry data.
- What is Mark C. Grieb's NPI number?
- 1154335115. 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 C. Grieb is enrolled with Medicare (CMS data updated 2026-10-02).
- 1801 S 17th StWilmington, NC 28401 (910) 763‑4555
- 2100 Stantonsburg RdGreenville, NC 27834 (252) 847‑4100
Group practices
Medicare enrollment lists Mark C. Grieb as a member of this group (CMS data updated 2026-10-02).
- East Carolina Anesthesia Associates PLLC696 clinicians in the group
Specialties
- Anesthesiologyprimary
- Pain Managementalso
Other anesthesiologists in Wilmington
Clinicians with the same Medicare primary specialty in Wilmington, NC — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Vanderbilt University School Of Medicine |
| Graduation year | 1993 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1154335115 |
| 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