Dr. Guillermo Armaiz M.D.
About this NPIWhat this record shows.
NPI 1598740920 is registered to Dr. Guillermo Armaiz M.D., a Internal Medicine practising at 50 Jose J Acosta St in Vega Baja, Puerto Rico. Internal Medicine physicians (internists) specialise in the prevention, diagnosis, and treatment of diseases in adults, often coordinating care across multiple subspecialties. Dr. Guillermo Armaiz M.D. has been enumerated in the National Provider Identifier (NPI) registry since 2005.
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
- 100042PR· Issued by MMM HEALTHCARE, INC.
- 068476PR· Issued by LA CRUZ AZUL DE PUERTO RI
- A367PR· Issued by FIRST MEDICAL HEALTH PLAN
- 22515ARPR· Issued by TRIPLE S DE PUERTO RICO
- 6930032PR· Issued by HUMANA OF PUERTO RICO
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
- I20100303000664Internal 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 Dr. Guillermo Armaiz M.D. accepts. To confirm in-network status with your specific health plan, contact Dr. Guillermo Armaiz M.D. directly at (787) 858-6077.
Frequently asked
Yes. NPI 1598740920 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) 858-6077.
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. Dr. Guillermo Armaiz M.D. is a Type-1 individual NPI.