Reynaldo Borja Castillo, M.D
General Practice Physician · Huntington Park, CA
Reynaldo Borja Castillo, M.D is a general practice physician with a practice address in Huntington Park, California, and NPI 1376665729, issued on Apr 5, 2007. Check the license (California A39948, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Reynaldo Borja Castillo
- Credential
- M.D
- Primary taxonomy
- General Practice Physician 208D00000X
- License number
- A39948 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2675 E Slauson Ave, Huntington Park, CA 90255
- Phone
- (323) 589-6681
- Enumerated
- Apr 5, 2007
- Record last updated
- Dec 1, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (323) 589-4903
- Entity
- Type 1 · individual
Also registered at 2675 E Slauson Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Robin Baltaxe, MPH ALL COURSES PH.DHealth Educator1467993790
- Romeo Castillo, MDInternal Medicine Physician1659345403
- Edmond JanfazaDentist1649495987
- Jefftrey Reiss, M.D.General Practice Physician1477650935
- Jamal Siddiqui, M.D.Legal Medicine1912076480
Verify Reynaldo Borja Castillo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A39948Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
38% fewer Medicare Part D claims than the average general practice physician in 2024
1,889 Medicare Part D claims for 145 beneficiaries, against an average of 3,030 among the 8,395 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 16 claims were for opioids.
Most prescribed
- Atorvastatin Calcium164 claims
- Metformin Hcl124 claims
- Famotidine93 claims
- Benazepril Hcl65 claims
- Losartan Potassium61 claims
- Levothyroxine Sodium59 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: $167.37
8 payments; by number, the most common kind was food and beverage; the largest payer was Lilly USA, LLC. The 4,259 providers of this specialty with any payment received $1,273.40 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.
14 general practice physician records list a practice address in Huntington Park
They are 14 of the 1,056 NPPES records with a practice address in Huntington Park, and 1,956 general practice physician records in California.
All 14 in Huntington Park → All 1,956 in California → Every provider in Huntington Park →
Other general practice physician records in California
- Hessam Aazami, M.D.Canoga Park, CA1144299173
- Ali Abaian, M.D.Los Angeles, CA1316061674
- Tahira Abbasi, MDLa Jolla, CA1619062346
- Ryan Abbott, M.D.Los Angeles, CA1194016030
- Adel Abdelsayed, M.D.Huntington Park, CA1922164961
- Kashif Abdullah, M.D. , M.P.HSan Jose, CA1164651212
- Ilona Abraham, MDEncino, CA1700939576
- Jerry Abraham, MD, MPH, CMQLos Angeles, CA1932514874
- Azniv Abrahamian, M.D.North Hollywood, CA1033270293
- Elliot Abravanel, MDSan Marino, CA1821610114
Common questions
What is Reynaldo Borja Castillo, M.D's NPI number?
Reynaldo Borja Castillo, M.D's National Provider Identifier (NPI) is 1376665729, issued on Apr 5, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Reynaldo Borja Castillo, M.D located?
The NPPES record lists a practice address at 2675 E Slauson Ave, Huntington Park, CA, 90255. Phone: (323) 589-6681. Providers update this record themselves, so call before visiting.
How can I verify Reynaldo Borja Castillo, M.D's license?
NPPES lists California license number A39948, 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 Reynaldo Borja Castillo, M.D prescribe under Medicare Part D?
In 2024, Reynaldo Borja Castillo, M.D had 1,889 Medicare Part D claims for 145 beneficiaries; the average among general practice physician prescribers was 3,030. 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.