Quick answers
- Does Kathryn Grieb accept Medicare assignment?
- Yes. Medicare's clinician data says Kathryn Grieb accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- What is Kathryn Grieb's NPI number?
- 1134936321. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Kathryn Grieb works
Medicare's Facility Affiliation Data lists Kathryn Grieb at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Inova Loudoun HospitalLeesburg, VA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 490043
- Shenandoah Memorial HospitalWoodstock, VA · Critical Access Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 491305
- Winchester Medical CenterWinchester, VA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 490005
Practice locations
Addresses where Kathryn Grieb is enrolled with Medicare (CMS data updated October 2, 2026).
- 17340 Pickwick Dr, Suite 130Purcellville, VA 20132 (540) 441‑4900
- 190 Campus Blvd, Suite 300Winchester, VA 22601
Group practices
Medicare enrollment lists Kathryn Grieb as a member of this group (CMS data updated October 2, 2026).
- Winchester Gastroenterology Associates17 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Purcellville
Clinicians with the same Medicare primary specialty in Purcellville, VA — not a recommendation.
Other clinicians in Winchester Gastroenterology Associates
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| School | Eastern Virginia Medical School |
|---|---|
| Graduation year | 2025 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1134936321 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- 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