Nicandro Gerardo Castaneda, M.D.
Internal Medicine Physician · Santa Maria, CA
Nicandro Gerardo Castaneda, M.D. is an internal medicine physician with a practice address in Santa Maria, California, and NPI 1578595245, issued on Jul 6, 2006. Check the license (California G73531, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Nicandro Gerardo Castaneda
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- G73531 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1400 E Church St, Santa Maria, CA 93454
- Phone
- (805) 739-3215
- Enumerated
- Jul 6, 2006
- Record last updated
- Apr 7, 2008 (not updated in 18 years: call before relying on the address or phone)
- Medicaid ID
- 00G735310 CA
- Medicare enrollment
- Enrolled (PECOS I20031212000641); accepts Medicare assignment
- Medical or professional school
- University Of California, Davis School Of Medicine, 1990
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 1400 E Church St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Elena Agafonova, M.D.Internal Medicine Physician1558757666
- Alyse Andrade, RN IBCLCLactation Consultant (Registered Nurse)1104647403
- Steven Andrews, PAPhysician Assistant1083352397
- Andrea ArthoferStudent in an Organized Health Care Education/Training Program1225772973
- Hannah Barrows, PA-CPhysician Assistant1528747128
- Nader Batal, DOFamily Medicine Physician1740923135
Verify Nicandro Gerardo Castaneda in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G73531Check 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
170 Medicare Part D claims for 70 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims.
Most prescribed
- Cefuroxime13 claims
- Pantoprazole Sodium13 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
- Central Coast IN-Patient Consultants IncSanta Maria, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nicandro Gerardo Castaneda among 17,696 internal medicine physician records in California
Nicandro Gerardo Castaneda, M.D. 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 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1990 · median 2004 among the 11,065 with a school on file
- Record last updated2008 · 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).
Internal Medicine Physician providers in California
There are 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Santa Maria → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Elena Agafonova, M.D.Santa Maria, CA 934541558757666
- Mohammad Arain, M.D.Santa Maria, CA 934541639167158
- Yosef Diab, MDSanta Maria, CA 934541053948026
- Hugh Hatfield, M. D.Santa Maria, CA 934541356360218
- Albert Hawkins, MDSanta Maria, CA 934541588664478
- Siri Atma Khalsa, MDSanta Maria, CA 934541073701785
- Ahmad Nooristani, M.D.Santa Maria, CA 934541659537306
- Elham Novin Baheran, MDSanta Maria, CA 934541245432897
Common questions
What is Nicandro Gerardo Castaneda, M.D.'s NPI number?
Nicandro Gerardo Castaneda, M.D.'s National Provider Identifier (NPI) is 1578595245, issued on Jul 6, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Nicandro Gerardo Castaneda, M.D. located?
The NPPES record lists a practice address at 1400 E Church St, Santa Maria, CA, 93454. Phone: (805) 739-3215. Providers update this record themselves, so call before visiting.
How can I verify Nicandro Gerardo Castaneda, M.D.'s license?
NPPES lists California license number G73531, 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 Nicandro Gerardo Castaneda, M.D. prescribe under Medicare Part D?
In 2024, Nicandro Gerardo Castaneda, M.D. had 170 Medicare Part D claims for 70 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.