Dr. Cesar Santillana MD
About this NPIWhat this record shows.
NPI 1063974889 is registered to Dr. Cesar Santillana MD, a Internal Medicine practising at 1601 W Saint Marys Rd in Tucson, Arizona. Internal Medicine physicians (internists) specialise in the prevention, diagnosis, and treatment of diseases in adults, often coordinating care across multiple subspecialties. Dr. Cesar Santillana MD has been enumerated in the National Provider Identifier (NPI) registry since 2019.
Your brand here.
Medicare enrollment
This provider holds 11 Medicare enrollments 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
- I20221013002775HospitalistFL
- I20230222002276Internal MedicineSC
- I20230406002290Internal MedicineVA
- I20230914000155HospitalistIL
- I20240117004206Internal MedicineIN
- I20240425000517Internal MedicineKY
- I20240619001264Internal MedicineAZ
- I20241015004526Internal MedicineFL
- I20241126002943HospitalistNM
- I20250424002397Internal MedicineME
- I20250909001353Internal MedicineCA
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. Cesar Santillana MD accepts. To confirm in-network status with your specific health plan, contact Dr. Cesar Santillana MD directly at (520) 622-5833.
Frequently asked
Yes. NPI 1063974889 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 (520) 622-5833.
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. Cesar Santillana MD is a Type-1 individual NPI.