Quick answers
- Where does Greesh John see patients?
- Medicare's clinician data lists 1 practice location in Prince Frederick, MD. Call before your visit to confirm the address.
- What is Greesh John's specialty?
- Medicare lists Anesthesiology as the primary specialty, and also Pain Management.
- Does Greesh John accept Medicare assignment?
- Yes. Medicare's clinician data says Greesh John 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 Greesh John?
- (410) 571-2946, as listed in official Medicare / NPI Registry data.
- What is Greesh John's NPI number?
- 1922316272. 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 Greesh John is enrolled with Medicare (CMS data updated 2026-10-02).
- 110 Hospital Rd, Suite 305Prince Frederick, MD 20678 (410) 571‑2946
Group practices
Medicare enrollment lists Greesh John as a member of this group (CMS data updated 2026-10-02).
- Advanced Pain Management Specialists LLC77 clinicians in the group
Specialties
- Anesthesiologyprimary
- Pain Managementalso
Other anesthesiologists in Prince Frederick
Clinicians with the same Medicare primary specialty in Prince Frederick, MD — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2005 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1922316272 |
| 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