MARK M GIESE CRNA
NPI 1821299710
Nurse Anesthetist, Certified Registered in Fontana, CA
About Mark M Giese Crna NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARK M GIESE CRNA (NPI 1821299710) is an individual nurse anesthetist, certified registered in Fontana, California, licensed in Washington (AP61603130) and active in the NPI registry since May 2007. He maintains a secondary practice location in Elma.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Mark M Giese Crna is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
5Medicare enrollment records show Mark Giese reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Bernardino, CA 92404
- Reassigned Medicare billing, California enrollment
- 270 clinicians in this Medicare group
Crescent City, CA 95531
- Reassigned Medicare billing, California enrollment
- 134 clinicians in this Medicare group
Spokane, WA 99204
- Reassigned Medicare billing, Washington enrollment
- 242 clinicians in this Medicare group
Elma, WA 98541
- Reassigned Medicare billing, Washington enrollment
- Also billed through NPI 1740211028 (Washington)
- 138 clinicians in this Medicare group
Chattanooga, TN 37404
- Reassigned Medicare billing, California enrollment
- 44 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
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.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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.
FONTANA, CA 92335
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 Mark Giese's NPI number?
The NPI number for Mark Giese is 1821299710. It was assigned to this individual provider in the NPPES registry on May 30, 2007.
Where is Mark Giese located?
Mark Giese practices at 9961 Sierra Ave, Fontana, CA 92335. The listed phone number is (909) 427-3910.
What is Mark Giese's specialty?
The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.
Is Mark Giese enrolled in Medicare?
Yes. Mark Giese is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Mark Giese's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mark Giese reassigns Medicare benefits to 5 organizations: Palm Springs Anesthesia Services, PC (San Bernardino, CA), Sda Services Of Ca (Crescent City, CA), Providence Health & Service- Washington (Spokane, WA), Grays Harbor County Public Hospital District No 1 (Elma, WA) and Sweet Dreams Anesthesia Inc (Chattanooga, TN). Each 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 Mark Giese'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 Mark Giese was last updated on April 14, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 months 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.
# Mark M Giese, CRNA · NPI 1821299710
Nurse Anesthetist, Certified Registered physician in Fontana, California. Individual provider, active in the CMS NPPES registry since May 30, 2007.
## Identity
- **NPI:** 1821299710 (Entity type: Individual)
- **Enumerated:** May 30, 2007
- **Primary specialty:** Nurse Anesthetist, Certified Registered · taxonomy 367500000X
- **State license:** AP61603130 (Washington)
- **Sole proprietor:** No
## Practice location
- **Address:** 9961 SIERRA AVE, Fontana, CA 92335-6720
- **Phone:** (909) 427-3910
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Bills Medicare through:** 5 organizations under Medicare reassignment (form CMS-855R): Palm Springs Anesthesia Services, PC (NPI 1083928501, San Bernardino, CA); Sda Services Of Ca (NPI 1417428970, Crescent City, CA); Providence Health & Service- Washington (NPI 1508118555, Spokane, WA); Grays Harbor County Public Hospital District No 1 (NPI 1083202907, Elma, WA); Sweet Dreams Anesthesia Inc (NPI 1508133497, Chattanooga, TN) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** April 14, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1821299710) · Data from the CMS NPPES public registry.