Leon Carlos Cruz Castaneda, MD
Internal Medicine Physician · San Jose, CA
Leon Carlos Cruz Castaneda, MD is an internal medicine physician with a practice address in San Jose, California, and NPI 1942629399, issued on Apr 14, 2014. Check the license (California A137528, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Leon Carlos Cruz Castaneda
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A137528 CA
Self-reported in NPPES; status is on the state search - Practice location
- 250 Hospital Pkwy, San Jose, CA 95119
- Phone
- (408) 972-7412
- Enumerated
- Apr 14, 2014
- Record last updated
- Dec 17, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20170912003051); accepts Medicare assignment
- Medical or professional school
- Stanford University School Of Medicine, 2014
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 250 Hospital Pkwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kristine AmiiPhysical Therapist1356696975
- Franklin Amog, RNCritical Care Medicine Registered Nurse1376408914
- Rachel AranzasoSocial Worker1740659366
- Robert Atienza, MDAnatomic Pathology & Clinical Pathology Physician1609134725
- Elizabeth BaileyDietary Manager1346388758
- Heather BlakeCertified Registered Nurse Anesthetist1750771168
Verify Leon Carlos Cruz Castaneda in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A137528Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average internal medicine physician in 2024
160 Medicare Part D claims for 68 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims.
Most prescribed
- Furosemide18 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
- Permanente Medical Group IncSan Jose, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Leon Carlos Cruz Castaneda among 17,696 internal medicine physician records in California
Leon Carlos Cruz Castaneda, MD is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 74% of them.
- NPI issued2014 · 74% of these records are older, 24% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2014 · median 2004 among the 11,065 with a school on file
- Record last updated2021 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
428 internal medicine physician records list a practice address in San Jose
They are 428 of the 20,925 NPPES records with a practice address in San Jose, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in San Jose → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Monte Bernstein, M.D.San Jose, CA 951191730262593
- Jagpreet Bhatia, MDSan Jose, CA 951191205912722
- Malathi Charlu, MDSan Jose, CA 951191316023815
- Cornelia Chin, MDSan Jose, CA 951191104902634
- Monica Delzeit, M.D.San Jose, CA 951191912005349
- Sony Haris, MDSan Jose, CA 951191750467288
- Denley Jang, M.D.San Jose, CA 951191659479970
- John Kabahit, DOSan Jose, CA 951191073699583
Common questions
What is Leon Carlos Cruz Castaneda, MD's NPI number?
Leon Carlos Cruz Castaneda, MD's National Provider Identifier (NPI) is 1942629399, issued on Apr 14, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Leon Carlos Cruz Castaneda, MD located?
The NPPES record lists a practice address at 250 Hospital Pkwy, San Jose, CA, 95119. Phone: (408) 972-7412. Providers update this record themselves, so call before visiting.
How can I verify Leon Carlos Cruz Castaneda, MD's license?
NPPES lists California license number A137528, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Leon Carlos Cruz Castaneda, MD prescribe under Medicare Part D?
In 2024, Leon Carlos Cruz Castaneda, MD had 160 Medicare Part D claims for 68 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.