Quick answers
- Does Georgina G. Grimm accept Medicare assignment?
- Yes. Medicare's clinician data says Georgina G. Grimm 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.
- How many Medicare patients does Georgina G. Grimm see?
- In 2024, CMS data shows 80 Original Medicare patients and 144 services for Georgina G. Grimm. This counts Original Medicare only and measures volume, not quality.
- What is Georgina G. Grimm's NPI number?
- 1104367739. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Georgina G. Grimm, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 80 |
|---|---|
| Services billed to Medicare | 144 |
| Different services or procedures | 6 |
| Participating Medicare provider | Yes |
| Average age of these patients | 69 |
Most frequent services
- Hemoglobin a1c level (83036)62 services
- Testing for presence of drug, read by direct observation (80305)60 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Diabetes49%
- Depression39%
- Arthritis34%
- Anxiety33%
Hospitals where Georgina G. Grimm works
Medicare's Facility Affiliation Data lists Georgina G. Grimm 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.
- Mad River Community HospitalArcata, CA · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 050028
- Providence Redwood Memorial HospitalFortuna, CA · Critical Access Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 051318
- Providence St Joseph HospitalEureka, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050006
Practice locations
Addresses where Georgina G. Grimm is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 6; the Medicare profile lists all.
- 1150 Foster AveArcata, CA 95521 (707) 826‑8610
- 2200 Tydd StEureka, CA 95501 (707) 441‑1624
- 2426 Buhne StEureka, CA 95501 (707) 442‑4038
- 3750 Rohnerville RdFortuna, CA 95540 (707) 725‑6101
- 38883 Hwy 299Willow Creek, CA 95573 (530) 629‑3111
Group practices
Medicare enrollment lists Georgina G. Grimm as a member of this group (CMS data updated October 2, 2026).
- Open Door Community Health Centers114 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Arcata
Clinicians with the same Medicare primary specialty in Arcata, CA — not a recommendation.
Other clinicians in Open Door Community Health Centers
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2016 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1104367739 |
| 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
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- 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