Quick answers
- Where does Gregory Prendergast see patients?
- Medicare's clinician data lists 5 practice locations, including Largo, MD, Woodbridge, VA and Halethorpe, MD. Call before your visit to confirm the address.
- What is Gregory Prendergast's specialty?
- Medicare lists Emergency Medicine as the primary specialty.
- Does Gregory Prendergast accept Medicare assignment?
- Yes. Medicare's clinician data says Gregory Prendergast 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 Gregory Prendergast?
- (301) 618-5700, as listed in official Medicare / NPI Registry data.
- What is Gregory Prendergast's NPI number?
- 1881156719. 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 Gregory Prendergast is enrolled with Medicare (CMS data updated 2026-10-02).
- 1221 Mercantile LnLargo, MD 20774 (301) 618‑5700
- 13285 Minnieville RdWoodbridge, VA 22192 (703) 986‑2400
- 1701 Twin Springs RdHalethorpe, MD 21227 (410) 737‑5000
- 2391 Greenspring DrTimonium, MD 21093 (301) 816‑2424
- 655 Watkins Mill RdGaithersburg, MD 20879 (240) 632‑4000
Group practices
Medicare enrollment lists Gregory Prendergast as a member of this group (CMS data updated 2026-10-02).
- Kaiser Foundation Health Plan of the Mid Atlantic States, Inc1,899 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Largo
Clinicians with the same Medicare primary specialty in Largo, MD — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Loyola University Of Chicago, Stritch School Of Medicine |
| Graduation year | 2019 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1881156719 |
| 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