MS. GEORGINA GISELLE GRIMM FNP
NPI 1104367739
Nurse Practitioner - Family in Oakland, CA
About Ms. Georgina Giselle Grimm Fnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MS. GEORGINA GISELLE GRIMM FNP (NPI 1104367739) is an individual family provider in Oakland, California, licensed in California (95006100) and active in the NPI registry since March 2017. She is enrolled in Medicare PECOS and is a graduate of Other (2016).
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Ms. Georgina Giselle Grimm Fnp is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Georgina Grimm reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Fortuna, CA 95540
- Reassigned Medicare billing, California enrollment
- 175 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 2
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 94603 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims 19
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
OAKLAND, CA 94603
OAKLAND, CA 94603
OAKLAND, CA 94603
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Georgina Grimm's NPI number?
The NPI number for Georgina Grimm is 1104367739. It was assigned to this individual provider in the NPPES registry on March 15, 2017.
Where is Georgina Grimm located?
Georgina Grimm practices at 9925 International Blvd #5, Oakland, CA 94603. The listed phone number is (510) 777-1177.
What is Georgina Grimm's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Georgina Grimm enrolled in Medicare?
Yes. Georgina Grimm is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Georgina Grimm's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Georgina Grimm reassigns Medicare benefits to Open Door Community Health Centers (Fortuna, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Georgina Grimm's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Georgina Grimm was last updated on March 15, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Ms. Georgina Giselle Grimm, FNP · NPI 1104367739
Family physician in Oakland, California. Individual provider, active in the CMS NPPES registry since March 15, 2017.
## Identity
- **NPI:** 1104367739 (Entity type: Individual)
- **Enumerated:** March 15, 2017
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** 95006100 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 9925 INTERNATIONAL BLVD, #5, Oakland, CA 94603-2558
- **Phone:** (510) 777-1177 · **Fax:** (510) 550-2644
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Open Door Community Health Centers (NPI 1306252051, Fortuna, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2016
## Record status
- **NPPES last updated:** March 15, 2017
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Source: [NPI Profile](https://npiprofile.com/npi/1104367739) · Data from the CMS NPPES public registry.