Brenda Irene Castolo, AGACNP-BC
Nurse Practitioner · Palo Alto, CA
Brenda Irene Castolo, AGACNP-BC is a nurse practitioner with a practice address in Palo Alto, California, and NPI 1083195408, issued on Aug 23, 2018. Check the license (California 95009709, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Brenda Irene Castolo
- Credential
- AGACNP-BC
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License number
- 95009709 CA
Self-reported in NPPES; status is on the state search - Practice location
- 900 Welch RD Ste 350, Palo Alto, CA 94304
- Phone
- (650) 723-6576
- Enumerated
- Aug 23, 2018
- Record last updated
- Jan 9, 2019 (not updated in 7 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20190311002725); accepts Medicare assignment
- Entity
- Type 1 · individual
Also registered at 900 Welch RD Ste 350
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Areeba Abid, MDStudent in an Organized Health Care Education/Training Program1982363941
- Dalton BrunsonStudent in an Organized Health Care Education/Training Program1730977281
- Claire CassianniStudent in an Organized Health Care Education/Training Program1538957063
- Peter Davis-Allen, MDEmergency Medicine Physician1043839657
- Ursula Dean, BSN, RN, MSN, NPFamily Nurse Practitioner1063813350
- Nimit Desai, MDStudent in an Organized Health Care Education/Training Program1528903895
Verify Brenda Irene Castolo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 95009709Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average nurse practitioner in 2024
25 Medicare Part D claims for 19 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 76.5 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
2 hospitals and group practices
- Stanford Health CareStanford, CA · Acute Care Hospitals5 of 5 stars
- Alameda Health SystemOakland, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
318 nurse practitioner records list a practice address in Palo Alto
They are 318 of the 7,617 NPPES records with a practice address in Palo Alto, and 8,223 nurse practitioner records in California.
All 318 in Palo Alto → All 8,223 in California → Every provider in Palo Alto →
Other nurse practitioner records in California
- Barbara Aaronson, RN/NURSE PRACTITONERLos Angeles, CA1588988182
- Albert Aba, AGNPSan Francisco, CA1578353777
- Martha Ababneh, CNAEl Monte, CA1275118614
- Maria Katrina Abad, AGPCNP-BCSan Carlos, CA1306394952
- Shayda Abadi, NPPalo Alto, CA1316745540
- Jessika Abarca, NPSan Fernando, CA1972263945
- Hangama Abassi, N.P.Walnut Creek, CA1487083655
- Elizabeth Abaunza, NPSan Francisco, CA1962044347
- Honeylynn Abaya, NPMoreno Valley, CA1528799145
- Tara Abbondanza, NPArcadia, CA1730355173
Common questions
What is Brenda Irene Castolo, AGACNP-BC's NPI number?
Brenda Irene Castolo, AGACNP-BC's National Provider Identifier (NPI) is 1083195408, issued on Aug 23, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Brenda Irene Castolo, AGACNP-BC located?
The NPPES record lists a practice address at 900 Welch RD Ste 350, Palo Alto, CA, 94304. Phone: (650) 723-6576. Providers update this record themselves, so call before visiting.
How can I verify Brenda Irene Castolo, AGACNP-BC's license?
NPPES lists California license number 95009709, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Brenda Irene Castolo, AGACNP-BC prescribe under Medicare Part D?
In 2024, Brenda Irene Castolo, AGACNP-BC had 25 Medicare Part D claims for 19 beneficiaries; the average among nurse practitioner prescribers was 1,109. Part D covers Medicare prescriptions only.
What is Brenda Irene Castolo, AGACNP-BC's MIPS final score?
The 2023 MIPS final score is 76.5 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.
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.