Oreste Castellanos, M.D.
Adult Medicine Physician · Mayaguez, PR
Oreste Castellanos, M.D. is an adult medicine physician with a practice address in Mayaguez, Puerto Rico, and NPI 1013945286, issued on Jun 28, 2006. Check the license (Puerto Rico 9785, as entered in NPPES) with the Puerto Rico board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Oreste Castellanos
- Credential
- M.D.
- Primary taxonomy
- Adult Medicine Physician 207QA0505X
- License number
- 9785 PR
Self-reported in NPPES; status is on the state search - Practice location
- Ave Hostos, Mayaguez, PR 00682
- Phone
- (787) 834-6070
- Enumerated
- Jun 28, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (787) 834-5535
- Entity
- Type 1 · individual
8 nearest adult medicine physician records → All 29 in Puerto Rico → Look up another NPI →
Also registered at Ave Hostos
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Nomaris Cancel-Cruz, PHARM DPharmacist1861786501
- Jacqueline Jimenez, M.SSpeech-Language Pathologist1013128248
- Carmen Lopezacevedo, RPTPhysical Therapist1528237617
- Evy Ryan, L.N.D.Nutritionist1164809182
Verify Oreste Castellanos in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Puerto Rico board licenses this profession
Search for license 9785Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
68% fewer Medicare Part D claims than the average adult medicine physician in 2024
955 Medicare Part D claims for 80 beneficiaries, against an average of 3,002 among the 1,307 providers of this specialty who prescribed in Part D.
Most prescribed
- Losartan Potassium80 claims
- Synthroid49 claims
- Atorvastatin Calcium40 claims
- Omeprazole40 claims
- Atenolol37 claims
- Famotidine36 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: $94.96
3 payments; by number, the most common kind was food and beverage; the largest payer was Teleflex LLC. The 664 providers of this specialty with any payment received $1,405.95 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.
Oreste Castellanos among 29 adult medicine physician records in Puerto Rico
Oreste Castellanos, M.D. is one of 29 adult medicine physician records with a practice address in Puerto Rico. 86% 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 14% of them.
- NPI issued2006 · 14% of these records are older, 41% newer
- In a Medicare fileYes · 86% of these records are
- In the CMS Doctors and Clinicians fileNo · 48% of these records are
- Record last updated2007 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207QA0505X and a Puerto Rico practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Adult Medicine Physician providers in Puerto Rico
There are 29 adult medicine physician records in Puerto Rico.
All 29 in Puerto Rico → Every provider in Mayaguez → Adult Medicine Physician nationwide →
The 8 adult medicine physician records with the nearest ZIP codes
- Kevin Caballero, MDMayaguez, PR 006821477145142
- Evans Altenor, MDSan German, PR 006831407793078
- Thomas Jimenez, M.D.Manati, PR 006741639287121
- Norma Marrero Figueroa, M.D.Vega Alta, PR 006921790829703
- Grizelle Ramirez, MDVega Baja, PR 006931629118567
- Hendryck Ruiz, M.D.Yauco, PR 006981790741437
- Marco Corchado Barreto, M.D.Isabela, PR 006621750376406
- Joselito Romero Lopez, MDIsabela, PR 006621508830043
Common questions
What is Oreste Castellanos, M.D.'s NPI number?
Oreste Castellanos, M.D.'s National Provider Identifier (NPI) is 1013945286, issued on Jun 28, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Oreste Castellanos, M.D. located?
The NPPES record lists a practice address at Ave Hostos, Mayaguez, PR, 00682. Phone: (787) 834-6070. Providers update this record themselves, so call before visiting.
How can I verify Oreste Castellanos, M.D.'s license?
NPPES lists Puerto Rico license number 9785, as entered by the provider. Search the Puerto Rico board that licenses this profession; the NPPES record confirms identity only.
How much does Oreste Castellanos, M.D. prescribe under Medicare Part D?
In 2024, Oreste Castellanos, M.D. had 955 Medicare Part D claims for 80 beneficiaries; the average among adult medicine physician prescribers was 3,002. 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.