DEREK JOSEPH FIEDLER
NPI 1205391620
Nurse Anesthetist, Certified Registered in Orange, CA
About Derek Joseph Fiedler NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DEREK JOSEPH FIEDLER (NPI 1205391620) is an individual nurse anesthetist, certified registered in Orange, California, licensed in California (95001930) and active in the NPI registry since February 2019. He maintains 3 additional practice locations and is a graduate of Other (2018).
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 3
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
Derek Joseph Fiedler 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 Reassignments
6Medicare enrollment records show Derek Fiedler reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Orange, CA 92868
- Reassigned Medicare billing, California enrollment
- 420 clinicians in this Medicare group
Santa Ana, CA 92705
- Reassigned Medicare billing, California enrollment
- 40 clinicians in this Medicare group
Woodland Hills, CA 91364
- Reassigned Medicare billing, California enrollment
- 39 clinicians in this Medicare group
Escondido, CA 92025
- Reassigned Medicare billing, California enrollment
- 33 clinicians in this Medicare group
San Diego, CA 92103
- Reassigned Medicare billing, California enrollment
- 112 clinicians in this Medicare group
Sacramento, CA 95817
- Reassigned Medicare billing, California enrollment
- 2,570 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 92868 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
ORANGE, CA 92868
ORANGE, CA 92868
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 Derek Fiedler's NPI number?
The NPI number for Derek Fiedler is 1205391620. It was assigned to this individual provider in the NPPES registry on February 11, 2019.
Where is Derek Fiedler located?
Derek Fiedler practices at 101 The City Dr S, Orange, CA 92868. The listed phone number is (714) 456-8888.
What is Derek Fiedler's specialty?
The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.
Is Derek Fiedler enrolled in Medicare?
Yes. Derek Fiedler 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 organizations bill Medicare for Derek Fiedler's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Derek Fiedler reassigns Medicare benefits to 6 organizations: Regents Of The University Of (Orange, CA), San Gabriel Anesthesia Associates, PC (Santa Ana, CA), Brotman Medical Anesthesia Group (Woodland Hills, CA), Escondido Anesthesia Associates LP (Escondido, CA), Regents Of The University Of California (San Diego, CA) and 1 more organization, listed in the Medicare section above. 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 Derek Fiedler'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 Derek Fiedler was last updated on September 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 45 days 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.
# Derek Joseph Fiedler · NPI 1205391620
Nurse Anesthetist, Certified Registered physician in Orange, California. Individual provider, active in the CMS NPPES registry since February 11, 2019.
## Identity
- **NPI:** 1205391620 (Entity type: Individual)
- **Enumerated:** February 11, 2019
- **Primary specialty:** Nurse Anesthetist, Certified Registered · taxonomy 367500000X
- **State license:** 95001930 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 101 THE CITY DR S, Orange, CA 92868-3201
- **Phone:** (714) 456-8888
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Bills Medicare through:** 6 organizations under Medicare reassignment (form CMS-855R): Regents Of The University Of (NPI 1487602546, Orange, CA); San Gabriel Anesthesia Associates, PC (NPI 1538424908, Santa Ana, CA); Brotman Medical Anesthesia Group (NPI 1154378362, Woodland Hills, CA); Escondido Anesthesia Associates LP (NPI 1588151120, Escondido, CA); Regents Of The University Of California (NPI 1265535702, San Diego, CA); and 1 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2018
## Record status
- **NPPES last updated:** September 29, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1205391620) · Data from the CMS NPPES public registry.