Quick answers
- Which hospitals does Mallory R. Mumma work at?
- Medicare's official clinician data lists Mallory R. Mumma at 3 hospitals: Grays Harbor Community Hospital, Mason General Hospital & Family of Clinics and Tacoma General Allenmore Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mallory R. Mumma see patients?
- Medicare's clinician data lists 1 practice location in Olympia, WA. Call before your visit to confirm the address.
- What is Mallory R. Mumma's specialty?
- Medicare lists Nurse Practitioner as the primary specialty.
- Does Mallory R. Mumma accept Medicare assignment?
- Yes. Medicare's clinician data says Mallory R. Mumma 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 Mallory R. Mumma?
- (360) 413-8250, as listed in official Medicare / NPI Registry data.
- What is Mallory R. Mumma's NPI number?
- 1801783402. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mallory R. Mumma works
Medicare's Facility Affiliation Data lists Mallory R. Mumma at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Grays Harbor Community HospitalAberdeen, WA · Acute Care Hospital · CCN 500031
- Mason General Hospital & Family of ClinicsShelton, WA · Critical Access Hospital · CCN 501336
- Tacoma General Allenmore HospitalTacoma, WA · Acute Care Hospital · CCN 500129
Practice locations
Addresses where Mallory R. Mumma is enrolled with Medicare (CMS data updated 2026-10-02).
- 209 Lilly Rd NE, Suite BOlympia, WA 98506 (360) 413‑8250
Group practices
Medicare enrollment lists Mallory R. Mumma as a member of this group (CMS data updated 2026-10-02).
- Puget Sound Gastroenterology PLLC61 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Olympia
Clinicians with the same Medicare primary specialty in Olympia, WA — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2025 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1801783402 |
| 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 2026-10-02, retrieved 2026-10-29
- 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