Michelle Castellanos Martin, MD
Internal Medicine Physician · Carolina, PR
Michelle Castellanos Martin, MD is an internal medicine physician with a practice address in Carolina, Puerto Rico, and NPI 1215243621, issued on Aug 23, 2010. Check the license (Puerto Rico 18725, as entered in NPPES) with the Puerto Rico board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Michelle Castellanos Martin
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 18725 PR
Self-reported in NPPES; status is on the state search - Practice location
- 80100 Calle Munoz Rivera Esq. Molinillo, Carolina, PR 00985
- Phone
- (787) 626-3322
- Enumerated
- Aug 23, 2010
- Record last updated
- Jul 21, 2022
- Medicare enrollment
- Enrolled (PECOS I20150129001033); may accept Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 1,146 in Puerto Rico → Look up another NPI →
Verify Michelle Castellanos Martin 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 18725Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
47% fewer Medicare Part D claims than the average internal medicine physician in 2024
1,669 Medicare Part D claims for 508 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims.
Most prescribed
- Famotidine343 claims
- Levofloxacin86 claims
- Atorvastatin Calcium63 claims
- Losartan Potassium63 claims
- Methylprednisolone60 claims
- Metronidazole55 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: $225.71
4 payments; by number, the most common kind was food and beverage; the largest payer was Janssen Pharmaceuticals, Inc. The 50,334 providers of this specialty with any payment received $1,303.06 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.
Michelle Castellanos Martin among 1,146 internal medicine physician records in Puerto Rico
Michelle Castellanos Martin, MD is one of 1,146 internal medicine physician records with a practice address in Puerto Rico. 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 2010, is newer than 63% of them.
- NPI issued2010 · 63% of these records are older, 36% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 52% of these records are
- Graduated2014 · median 1996 among the 595 with a school on file
- Record last updated2022 · 55% 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 Puerto Rico practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
22 internal medicine physician records list a practice address in Carolina
They are 22 of the 1,535 NPPES records with a practice address in Carolina, and 1,146 internal medicine physician records in Puerto Rico.
All 1,146 in Puerto Rico → Every provider in Carolina → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Idenisse Berrios, M. D.Carolina, PR 009851619123304
- Anisonia Martinez Hernandez, MDCarolina, PR 009851053378091
- Marina Roman, M.D.Carolina, PR 009851972628113
- Maritza Cabezas-Mijuste, MDCarolina, PR 009841548279300
- Eva Chaves GuzmanCarolina, PR 009841962129841
- Jose Colon - Marquez, M.DCarolina, PR 009841538213574
- Euri Fernandez Nunez, MDCarolina, PR 009861881079150
- Yarely Gierbolini, STUDENT MDCarolina, PR 009841548848112
Common questions
What is Michelle Castellanos Martin, MD's NPI number?
Michelle Castellanos Martin, MD's National Provider Identifier (NPI) is 1215243621, issued on Aug 23, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Michelle Castellanos Martin, MD located?
The NPPES record lists a practice address at 80100 Calle Munoz Rivera Esq. Molinillo, Carolina, PR, 00985. Phone: (787) 626-3322. Providers update this record themselves, so call before visiting.
How can I verify Michelle Castellanos Martin, MD's license?
NPPES lists Puerto Rico license number 18725, as entered by the provider. Search the Puerto Rico board that licenses this profession; the NPPES record confirms identity only.
How much does Michelle Castellanos Martin, MD prescribe under Medicare Part D?
In 2024, Michelle Castellanos Martin, MD had 1,669 Medicare Part D claims for 508 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.