Oscar Alberto Castrejon, MD
Emergency Medicine Physician · Las Cruces, NM
Oscar Alberto Castrejon, MD is an emergency medicine physician with a practice address in Las Cruces, New Mexico, and NPI 1508020355, issued on Jul 10, 2008. Check the license (New Mexico RS2008-0577, as entered in NPPES) on the New Mexico Medical Board; the Medicare figures below come from public CMS files.
- Name
- Oscar Alberto Castrejon
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- RS2008-0577 NM
V5247 TX
Self-reported in NPPES; status is on the state search - Practice location
- 4739 Radiant CT, Las Cruces, NM 88011
- Phone
- (575) 640-5187
- Enumerated
- Jul 10, 2008
- Record last updated
- May 6, 2025
- Medicare enrollment
- Enrolled (PECOS I20111005000607); accepts Medicare assignment
- Entity
- Type 1 · individual
Verify Oscar Alberto Castrejon in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Mexico Medical Board
Search for license RS2008-0577Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
11% fewer Medicare Part D claims than the average emergency medicine physician in 2024
202 Medicare Part D claims for 159 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
Most prescribed
- Diclofenac Sodium42 claims
- Cephalexin16 claims
- Prednisone13 claims
- Dicyclomine Hcl12 claims
- Sulfamethoxazole-Trimethoprim12 claims
- Cyclobenzaprine Hcl11 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
- Southwest Emergency Medical Associates OF NM PCLas Cruces, NM
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Emergency Medicine Physician providers in New Mexico
There are 517 emergency medicine physician records in New Mexico.
Other emergency medicine physician records in New Mexico
- Jaime Aagaard, MDAlbuquerque, NM1083750863
- Jorge Abalos, DOArtesia, NM1851382469
- Dawn Abriel, DOSanta Fe, NM1427026905
- Dane Abruzzo, MDAlbuquerque, NM1093343774
- Steven Acosta, M.D.Las Cruces, NM1861531865
- Irene Agostini, MDAlbuquerque, NM1467418475
- John Alcock, MDAlbuquerque, NM1548372238
- Sylvia Alden, MDAlbuquerque, NM1295001527
- Robert AlundayAlbuquerque, NM1073776720
- Bianca Alvarez, MDAlbuquerque, NM1932605805
Common questions
What is Oscar Alberto Castrejon, MD's NPI number?
Oscar Alberto Castrejon, MD's National Provider Identifier (NPI) is 1508020355, issued on Jul 10, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Oscar Alberto Castrejon, MD located?
The NPPES record lists a practice address at 4739 Radiant CT, Las Cruces, NM, 88011. Phone: (575) 640-5187. Providers update this record themselves, so call before visiting.
How can I verify Oscar Alberto Castrejon, MD's license?
NPPES lists New Mexico license number RS2008-0577, as entered by the provider. Search the New Mexico Medical Board at https://www.nmmb.state.nm.us/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Oscar Alberto Castrejon, MD prescribe under Medicare Part D?
In 2024, Oscar Alberto Castrejon, MD had 202 Medicare Part D claims for 159 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.