EUGENE C SANTILLANO MD
NPI 1619967007
Family Medicine - Addiction Medicine in Sunnyvale, CA
About Eugene C Santillano Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
EUGENE C SANTILLANO MD (NPI 1619967007) is an individual addiction medicine provider in Sunnyvale, California, licensed in California (A88670) and active in the NPI registry since October 2005. He is enrolled in Medicare PECOS, maintains a secondary practice location in Watsonville, and is a graduate of Drexel University College Of Medicine (2003).
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Other Identifiers 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Eugene C Santillano Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 94089 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 5
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SUNNYVALE, CA 94089
SUNNYVALE, CA 94089
SUNNYVALE, CA 94089
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Eugene Santillano's NPI number?
The NPI number for Eugene Santillano is 1619967007. It was assigned to this individual provider in the NPPES registry on October 26, 2005.
Where is Eugene Santillano located?
Eugene Santillano practices at 1287 Hammerwood Ave, Sunnyvale, CA 94089. The listed phone number is (408) 337-6383.
What is Eugene Santillano's specialty?
The primary specialty registered for this NPI is Family Medicine, specializing in Addiction Medicine, with taxonomy code 207QA0401X.
Is Eugene Santillano enrolled in Medicare?
Yes. Eugene Santillano is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
When was this NPI record last updated?
The NPPES record for Eugene Santillano was last updated on October 24, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Eugene C Santillano, MD · NPI 1619967007
Addiction Medicine physician in Sunnyvale, California. Individual provider, active in the CMS NPPES registry since October 26, 2005.
## Identity
- **NPI:** 1619967007 (Entity type: Individual)
- **Enumerated:** October 26, 2005
- **Primary specialty:** Family Medicine - Addiction Medicine · taxonomy 207QA0401X
- **State license:** A88670 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 1287 HAMMERWOOD AVE, Sunnyvale, CA 94089-2231
- **Phone:** (408) 337-6383
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Medical school:** Drexel University College Of Medicine, class of 2003
## Record status
- **NPPES last updated:** October 24, 2025
- **Other identifiers:** Medicaid 101722200 (PA)
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Source: [NPI Profile](https://npiprofile.com/npi/1619967007) · Data from the CMS NPPES public registry.