Michelle Castellanos Martin MD
About this NPIWhat this record shows.
NPI 1215243621 is registered to Michelle Castellanos Martin MD, a Internal Medicine practising at 80100 Calle Munoz Rivera Esq. Molinillo in Carolina, Puerto Rico. Internal Medicine physicians (internists) specialise in the prevention, diagnosis, and treatment of diseases in adults, often coordinating care across multiple subspecialties. Michelle Castellanos Martin MD has been enumerated in the National Provider Identifier (NPI) registry since 2010.
Your brand here.
Secondary identifiers
Additional identifiers this provider has registered with NPPES. Used by medical billers, credentialers, and insurance verifiers to cross-reference claims and enrollments.
Other
- 18,725PR· Issued by PERMANENT
Source: NPPES public registry.
Medicare enrollment
This provider holds a Medicare enrollment on file with the Provider Enrollment, Chain and Ownership System (PECOS). Each enrollment carries a public Medicare Enrollment ID (ENRLMT_ID) used by billers and intermediaries.
Practitioner
- I20150129001033Internal MedicinePR
Source: CMS PECOS public enrollment file.
Insurance & acceptsHow to confirm coverage.
The National Plan and Provider Enumeration System (NPPES) registry does not include commercial insurance network data, so we cannot show which plans Michelle Castellanos Martin MD accepts. To confirm in-network status with your specific health plan, contact Michelle Castellanos Martin MD directly at (787) 626-3322.
Frequently asked
Yes. NPI 1215243621 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Internal Medicine physicians (internists) specialise in the prevention, diagnosis, and treatment of diseases in adults, often coordinating care across multiple subspecialties.
The CMS NPPES Public Registry at npiregistry.cms.hhs.gov is the authoritative source. FindMyNPI mirrors this dataset and refreshes monthly. For real-time verification, you can also call the provider's office at (787) 626-3322.
An individual healthcare provider has a single Type-1 NPI for life. Organisations can hold separate Type-2 NPIs per location, specialty, or sub-entity. Michelle Castellanos Martin MD is a Type-1 individual NPI.