NPPES file of Aug 9, 2026

Maureen Mary Castro Arriola, NP

Acute Care Nurse Practitioner · San Francisco, CA

Maureen Mary Castro Arriola, NP is an acute care nurse practitioner with a practice address in San Francisco, California, and NPI 1063656122, issued on Apr 20, 2009. Check the license (California 18285, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1063656122
Name
Maureen Mary Castro Arriola
Credential
NP
Primary taxonomy
Acute Care Nurse Practitioner 363LA2100X
License number
18285 CA
Self-reported in NPPES; status is on the state search
Practice location
Ucsf Medical Center 505 Parnassus Ave, San Francisco, CA 94143
Phone
(415) 353-9045
Enumerated
Apr 20, 2009
Record last updated
Aug 6, 2023
Medicare enrollment
Enrolled (PECOS I20170706003079); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest acute care nurse practitioner records → All 1,810 in California → Look up another NPI →

Also registered at Ucsf Medical Center 505 Parnassus Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Angela Guerrera, NPNurse Practitioner1366696759

Verify Maureen Mary Castro Arriola in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license 18285    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. University Anesthesia Medical GroupSan Francisco, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Maureen Mary Castro Arriola among 1,810 acute care nurse practitioner records in California

Maureen Mary Castro Arriola, NP is one of 1,810 acute care nurse practitioner records with a practice address in California. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 13% of them.

  • NPI issued2009 · 13% of these records are older, 85% newer
  • In a Medicare fileYes · 74% of these records are
  • In the CMS Doctors and Clinicians fileYes · 55% of these records are
  • Graduated2008 · median 2018 among the 993 with a school on file
  • Record last updated2023 · 42% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LA2100X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Acute Care Nurse Practitioner providers in California

There are 1,810 acute care nurse practitioner records in California.

All 1,810 in California → Every provider in San Francisco → Acute Care Nurse Practitioner nationwide →

The 8 acute care nurse practitioner records with the nearest ZIP codes

  1. Christopher Acebedo, NPSan Francisco, CA 941431104085109
  2. Marlene BurtSan Francisco, CA 941431740482405
  3. Thomas Farley, NP MSNSan Francisco, CA 941431629100656
  4. Cana Jenkins, RN, ACNPSan Francisco, CA 941431427295070
  5. Kenneth Johnson, N.P.San Francisco, CA 941431598956856
  6. Carl Kulpa, DNP, ANP-BC, ACNP-BCSan Francisco, CA 941431073846044
  7. Lesha McPeak, NPSan Francisco, CA 941431568777308
  8. Stacy Mills, N.P.San Francisco, CA 941431336398536

Common questions

What is Maureen Mary Castro Arriola, NP's NPI number?

Maureen Mary Castro Arriola, NP's National Provider Identifier (NPI) is 1063656122, issued on Apr 20, 2009. An NPI identifies a provider in billing; it is not a license.

Where is Maureen Mary Castro Arriola, NP located?

The NPPES record lists a practice address at Ucsf Medical Center 505 Parnassus Ave, San Francisco, CA, 94143. Phone: (415) 353-9045. Providers update this record themselves, so call before visiting.

How can I verify Maureen Mary Castro Arriola, NP's license?

NPPES lists California license number 18285, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.