MRS. MAUREEN MARY CASTRO ARRIOLA NP
NPI 1063656122
Nurse Practitioner - Acute Care in San Francisco, CA
About Mrs. Maureen Mary Castro Arriola Np NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MRS. MAUREEN MARY CASTRO ARRIOLA NP (NPI 1063656122) is an individual acute care provider in San Francisco, California, licensed in California (18285) and active in the NPI registry since April 2009. She is enrolled in Medicare PECOS and is a graduate of Other (2008).
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
Mrs. Maureen Mary Castro Arriola Np 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 Maureen Mary Arriola reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Francisco, CA 94143
- Reassigned Medicare billing, California enrollment
- 723 clinicians in this Medicare group
San Francisco, CA 94143
- Reassigned Medicare billing, California enrollment
- 5,645 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 94143 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
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SAN FRANCISCO, CA 94143
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 Maureen Mary Arriola's NPI number?
The NPI number for Maureen Mary Arriola is 1063656122. It was assigned to this individual provider in the NPPES registry on April 20, 2009.
Where is Maureen Mary Arriola located?
Maureen Mary Arriola practices at Ucsf Medical Center 505 Parnassus Ave Box 0210, San Francisco, CA 94143. The listed phone number is (415) 353-9045.
What is Maureen Mary Arriola's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Acute Care, with taxonomy code 363LA2100X.
Is Maureen Mary Arriola enrolled in Medicare?
Yes. Maureen Mary Arriola 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 Maureen Mary Arriola's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Maureen Mary Arriola reassigns Medicare benefits to 2 organizations: University Anesthesia Medical Group (San Francisco, CA) and University Of California San Francisco (San Francisco, CA). 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 Maureen Mary Arriola'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 Maureen Mary Arriola was last updated on August 6, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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. Maureen Mary Castro Arriola, NP · NPI 1063656122
Acute Care physician in San Francisco, California. Individual provider, active in the CMS NPPES registry since April 20, 2009.
## Identity
- **NPI:** 1063656122 (Entity type: Individual)
- **Enumerated:** April 20, 2009
- **Primary specialty:** Nurse Practitioner - Acute Care · taxonomy 363LA2100X
- **State license:** 18285 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** UCSF MEDICAL CENTER 505 PARNASSUS AVE, BOX 0210, San Francisco, CA 94143-0001
- **Phone:** (415) 353-9045
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): University Anesthesia Medical Group (NPI 1528137296, San Francisco, CA); University Of California San Francisco (NPI 1346329380, San Francisco, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2008
## Record status
- **NPPES last updated:** August 6, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1063656122) · Data from the CMS NPPES public registry.