Daniel B. Castro, M.D.
Family Medicine Physician · Torrance, CA
Daniel B. Castro, M.D. is a family medicine physician with a practice address in Torrance, California, and NPI 1174684567, issued on Dec 12, 2006. Check the license (California G51143, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Daniel B. Castro
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- G51143 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1000 W Carson St, Torrance, CA 90502
- Phone
- (310) 534-6223
- Enumerated
- Dec 12, 2006
- Record last updated
- Sep 21, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (310) 326-7205
- Medicaid ID
- 00G511430 CA
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 1000 W Carson St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Brenda Abarca, MDPsychiatry Physician1407485527
- Maleeha AbbasStudent in an Organized Health Care Education/Training Program1275203499
- Saamirah Abdul-MuminCommunity Health Worker1144683947
- Maria Elena AbedesAmbulatory Care Registered Nurse1184360992
- Hoda Abou-Ziab, PSYDClinical Psychologist1649618125
Verify Daniel B. Castro in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G51143Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
78% fewer Medicare Part D claims than the average family medicine physician in 2024
796 Medicare Part D claims for 67 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims. 49 claims were for opioids.
Most prescribed
- Atorvastatin Calcium49 claims
- Gabapentin46 claims
- Metformin Hcl37 claims
- Losartan Potassium26 claims
- Amlodipine Besylate23 claims
- Hydrocodone-Acetaminophen22 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.
Industry payments in 2024: $136.78
1 payment: food and beverage; the largest payer was Exelixis Inc. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Daniel B. Castro among 17,133 family medicine physician records in California
Daniel B. Castro, M.D. is one of 17,133 family medicine physician records with a practice address in California. 81% 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 6% of them.
- NPI issued2006 · 6% of these records are older, 59% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 62% of these records are
- Record last updated2010 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
114 family medicine physician records list a practice address in Torrance
They are 114 of the 8,901 NPPES records with a practice address in Torrance, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Torrance → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- John Cheng, M.D.Torrance, CA 905021396806204
- Susan Hsieh, M.D.Torrance, CA 905021235168576
- James Huang, M.D.Torrance, CA 905021194879718
- Dennis Levin, M.D.Torrance, CA 905021649226341
- Ingrid Liu, M.D.Torrance, CA 905021871535328
- Robyn Mitchell, M.D.Torrance, CA 905021710004940
- Denise Moret, MDTorrance, CA 905021417046087
- Zuhra Musherraf, D.O.Torrance, CA 905021033325584
Common questions
What is Daniel B. Castro, M.D.'s NPI number?
Daniel B. Castro, M.D.'s National Provider Identifier (NPI) is 1174684567, issued on Dec 12, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Daniel B. Castro, M.D. located?
The NPPES record lists a practice address at 1000 W Carson St, Torrance, CA, 90502. Phone: (310) 534-6223. Providers update this record themselves, so call before visiting.
How can I verify Daniel B. Castro, M.D.'s license?
NPPES lists California license number G51143, 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 Daniel B. Castro, M.D. prescribe under Medicare Part D?
In 2024, Daniel B. Castro, M.D. had 796 Medicare Part D claims for 67 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.