CATHERINE P ESTREMERA CRNA
NPI 1437196219
Nurse Anesthetist, Certified Registered in Sacramento, CA
About Catherine P Estremera Crna NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CATHERINE P ESTREMERA CRNA (NPI 1437196219) is an individual nurse anesthetist, certified registered in Sacramento, California, licensed in Washington (AP30007284) and active in the NPI registry since June 2006. She is a graduate of Other (2005).
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Other Identifiers 2
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
Catherine P Estremera Crna 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
2Medicare enrollment records show Catherine Estremera reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Davis, CA 95616
- Reassigned Medicare billing, California enrollment
- 2,570 clinicians in this Medicare group
Spokane, WA 99204
- Reassigned Medicare billing, Washington enrollment
- 102 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 95817 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
SACRAMENTO, CA 95817
SACRAMENTO, CA 95817
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 Catherine Estremera's NPI number?
The NPI number for Catherine Estremera is 1437196219. It was assigned to this individual provider in the NPPES registry on June 1, 2006. The provider is also known as Catherine P Spillane Crna.
Where is Catherine Estremera located?
Catherine Estremera practices at 4150 V St Ste 1200, Sacramento, CA 95817. The listed phone number is (916) 734-2011.
What is Catherine Estremera's specialty?
The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.
Is Catherine Estremera enrolled in Medicare?
Yes. Catherine Estremera 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 Catherine Estremera's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Catherine Estremera reassigns Medicare benefits to 2 organizations: Regents Of The Univ Of Ca (Davis, CA) and Anesthesia Associates, Ps (Spokane, WA). 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 Catherine Estremera'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 Catherine Estremera was last updated on December 30, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.
# Catherine P Estremera, CRNA · NPI 1437196219
Nurse Anesthetist, Certified Registered physician in Sacramento, California. Individual provider, active in the CMS NPPES registry since June 1, 2006.
## Identity
- **NPI:** 1437196219 (Entity type: Individual)
- **Enumerated:** June 1, 2006
- **Primary specialty:** Nurse Anesthetist, Certified Registered · taxonomy 367500000X
- **State license:** AP30007284 (Washington)
- **Sole proprietor:** No
## Practice location
- **Address:** 4150 V ST STE 1200, Sacramento, CA 95817-1460
- **Phone:** (916) 734-2011
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Regents Of The Univ Of Ca (NPI 1053304071, Davis, CA); Anesthesia Associates, Ps (NPI 1831143254, Spokane, WA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2005
## Record status
- **NPPES last updated:** December 30, 2015
- **Other identifiers:** Medicaid 9648130 (WA); Medicare PIN 8860310
---
Source: [NPI Profile](https://npiprofile.com/npi/1437196219) · Data from the CMS NPPES public registry.