Diane Montefalcon Castignani, FNP
Nurse Practitioner · San Jose, CA
Diane Montefalcon Castignani, FNP is a nurse practitioner with a practice address in San Jose, California, and NPI 1881132801, issued on Feb 9, 2017. Check the license (California 95005831, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Diane Montefalcon Castignani
- Credential
- FNP
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License number
- 95005831 CA
Self-reported in NPPES; status is on the state search - Practice location
- 798 S Winchester Blvd, San Jose, CA 95128
- Phone
- (408) 984-7226
- Enumerated
- Feb 9, 2017
- Record last updated
- Jul 11, 2022
- Fax
- (408) 984-7225
- Medicare enrollment
- Enrolled (PECOS I20180329002061); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 8,223 in California → Look up another NPI →
Also registered at 798 S Winchester Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Diane Montefalcon Castignani in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 95005831Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
70% fewer Medicare Part D claims than the average nurse practitioner in 2024
332 Medicare Part D claims for 255 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D.
Most prescribed
- Paxlovid39 claims
- Amoxicillin-Clavulanate Potass32 claims
- Azithromycin26 claims
- Albuterol Sulfate Hfa22 claims
- Cephalexin21 claims
- Doxycycline Hyclate18 claims
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.
Bills Medicare through one group practice
- University Healthcare AllianceSan Jose, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Diane Montefalcon Castignani among 8,223 nurse practitioner records in California
Diane Montefalcon Castignani, FNP is one of 8,223 nurse practitioner records with a practice address in California. 65% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 52% of them.
- NPI issued2017 · 52% of these records are older, 44% newer
- In a Medicare fileYes · 65% of these records are
- In the CMS Doctors and Clinicians fileYes · 42% of these records are
- Graduated2016 · median 2017 among the 3,425 with a school on file
- Record last updated2022 · 45% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nurse Practitioner providers in California
There are 8,223 nurse practitioner records in California.
All 8,223 in California → Every provider in San Jose → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- Eric Call, NPSan Jose, CA 951281568454866
- Teresa Chang, FNPSan Jose, CA 951281447368295
- Krista Crowley, NPSan Jose, CA 951281982646105
- Christl Kirchner, NPSan Jose, CA 951281275597528
- Greta Liebelt, NPSan Jose, CA 951281316989494
- Gail McKay, NPSan Jose, CA 951281437210713
- Mabel McNall-Lubeck, NP-C,MSNSan Jose, CA 951281588620967
- Elona Menge, NPSan Jose, CA 951281265498315
Common questions
What is Diane Montefalcon Castignani, FNP's NPI number?
Diane Montefalcon Castignani, FNP's National Provider Identifier (NPI) is 1881132801, issued on Feb 9, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Diane Montefalcon Castignani, FNP located?
The NPPES record lists a practice address at 798 S Winchester Blvd, San Jose, CA, 95128. Phone: (408) 984-7226. Providers update this record themselves, so call before visiting.
How can I verify Diane Montefalcon Castignani, FNP's license?
NPPES lists California license number 95005831, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Diane Montefalcon Castignani, FNP prescribe under Medicare Part D?
In 2024, Diane Montefalcon Castignani, FNP had 332 Medicare Part D claims for 255 beneficiaries; the average among nurse practitioner prescribers was 1,109. Part D covers Medicare prescriptions 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.
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.