Quick answers
- Where does Gregory R. Doll see patients?
- Medicare's clinician data lists 3 practice locations, including Horsham, PA, Greenwood, IN and Terre Haute, IN. Call before your visit to confirm the address.
- What is Gregory R. Doll's specialty?
- Medicare lists Emergency Medicine as the primary specialty.
- Does Gregory R. Doll accept Medicare assignment?
- Yes. Medicare's clinician data says Gregory R. Doll 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 Gregory R. Doll's NPI number?
- 1285673764. 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 R. Doll is enrolled with Medicare (CMS data updated 2026-10-02).
- 100 Witmer Rd, Suite 220Horsham, PA 19044
- 1040 Sierra Dr, Suite 400Greenwood, IN 46143
- 1606 N 7th StTerre Haute, IN 47804
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Pennsylvania
Clinicians with the same Medicare primary specialty in Pennsylvania — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Michigan State University College Of Human Medicine |
| Graduation year | 1982 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1285673764 |
| 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