MRS. MARIA CARIDAD VILLAREAL CRNA
NPI 1881018604
Nurse Anesthetist, Certified Registered in Sacramento, CA
About Mrs. Maria Caridad Villareal Crna NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MRS. MARIA CARIDAD VILLAREAL CRNA (NPI 1881018604) is an individual nurse anesthetist, certified registered in Sacramento, California, licensed in California (95000039) and active in the NPI registry since February 2014. She maintains a secondary practice location in Turlock and is a graduate of Other (2013).
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 and accepts Medicare assignment
Mrs. Maria Caridad Villareal 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
10Medicare enrollment records show Maria Villareal reassigns Medicare billing to 10 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Sacramento, CA 95817
- Reassigned Medicare billing, California enrollment
- 2,570 clinicians in this Medicare group
Sacramento, CA 95819
- Reassigned Medicare billing, California enrollment
- 833 clinicians in this Medicare group
Stockton, CA 95202
- Reassigned Medicare billing, California enrollment
- 534 clinicians in this Medicare group
French Camp, CA 95231
- Reassigned Medicare billing, California enrollment
- Medicare enrollment name: Anesthesia Services Of San Joaquin PC
- 217 clinicians in this Medicare group
French Camp, CA 95231
- Reassigned Medicare billing, California enrollment
- 512 clinicians in this Medicare group
San Ramon, CA 94583
- Reassigned Medicare billing, California enrollment
- 176 clinicians in this Medicare group
Sonora, CA 95370
- Reassigned Medicare billing, California enrollment
- 31 clinicians in this Medicare group
Madera, CA 93637
- Reassigned Medicare billing, California enrollment
- 92 clinicians in this Medicare group
Fresno, CA 93720
- Reassigned Medicare billing, California enrollment
- 293 clinicians in this Medicare group
Crescent City, CA 95531
- Reassigned Medicare billing, California enrollment
- 134 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 3
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 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.
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.
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 Maria Villareal's NPI number?
The NPI number for Maria Villareal is 1881018604. It was assigned to this individual provider in the NPPES registry on February 13, 2014.
Where is Maria Villareal located?
Maria Villareal practices at 4301 X St, Sacramento, CA 95817. The listed phone number is (800) 282-3284.
What is Maria Villareal's specialty?
The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.
Is Maria Villareal enrolled in Medicare?
Yes. Maria Villareal 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 Maria Villareal's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Maria Villareal reassigns Medicare benefits to 10 organizations: Regents Of The Univ Of Ca (Sacramento, CA), Cep America - Anesthesia PC (Sacramento, CA), County Of San Joaquin (Stockton, CA), Anesthesia Services Of San Joaquin, P.C. (French Camp, CA), San Joaquin Faculty Medical Group (French Camp, CA) and 5 more organizations, 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 Maria Villareal'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 Maria Villareal was last updated on February 14, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Mrs. Maria Caridad Villareal, CRNA · NPI 1881018604
Nurse Anesthetist, Certified Registered physician in Sacramento, California. Individual provider, active in the CMS NPPES registry since February 13, 2014.
## Identity
- **NPI:** 1881018604 (Entity type: Individual)
- **Enumerated:** February 13, 2014
- **Primary specialty:** Nurse Anesthetist, Certified Registered · taxonomy 367500000X
- **State license:** 95000039 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 4301 X ST, Sacramento, CA 95817-2214
- **Phone:** (800) 282-3284
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Bills Medicare through:** 10 organizations under Medicare reassignment (form CMS-855R): Regents Of The Univ Of Ca (NPI 1013906973, Sacramento, CA); Cep America - Anesthesia PC (NPI 1770014466, Sacramento, CA); County Of San Joaquin (NPI 1891036612, Stockton, CA); Anesthesia Services Of San Joaquin, P.C. (NPI 1366778227, French Camp, CA); San Joaquin Faculty Medical Group (NPI 1225063761, French Camp, CA); and 5 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2013
## Record status
- **NPPES last updated:** February 14, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1881018604) · Data from the CMS NPPES public registry.