NPIMap

Organization Active NPI

Addiction Change Experts (Ace) Medical Inc

  • Addiction Medicine (Family Medicine) Physician
  • Sunnyvale, CA
National Provider Identifier
1497615611
Registry record updated Nov 12, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Addiction Medicine (Family Medicine) PhysicianTaxonomy code 207QA0401X
Legal business name
ADDICTION CHANGE EXPERTS (ACE) MEDICAL INC
Practice address
1287 Hammerwood Ave
Sunnyvale, CA 94089-2231
Phone
(408) 337-6383
NPI assigned
Nov 12, 2025
Last updated
Nov 12, 2025By the provider in NPPES
Organization subpart
Yes
Parent organization
ADDICTION CHANGE EXPERTS (ACE) MEDICAL INCAs reported in NPPES

NPPES NPI Registry

Updated by the provider on Nov 12, 2025

Registry information is reported by the provider to CMS and is not verified. About this source

Authorized official

Name
Dr. Eugene C Santillano, MDNPI 1619967007
Title
Ceo/ President
Phone
(408) 337-6383

Authorized official NPPES reports the official by name only. The link goes to the one practitioner connected to this organization with that name.

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Addiction Medicine (Family Medicine) Physician 207QA0401X NU Primary

Addresses

Primary practice location

1287 Hammerwood Ave
Sunnyvale, CA 94089-2231

Mailing address

1287 Hammerwood Ave
Sunnyvale, CA 94089-2231
Phone (408) 337-6383

National Provider Directory

National Provider Directory
Tax ID family
Addiction Change Experts Ace Medical Inc2 organizations share this tax ID, including this one
Part of
Addiction Change Experts Ace Medical Inc

Other organizations with this tax ID 1

Organizations that report the same tax identification number in the National Provider Directory.

Ownership & related parties

Parent organization (reported in NPPES) 1

This organization reports itself as a subpart in NPPES; the parent’s legal name matches this organization in the same state.

Practitioners & affiliated clinicians

Practitioners 1

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles, and the practitioner matching its NPPES authorized official.

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1762905600000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1762905600000",
    "number": "1497615611",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1287 HAMMERWOOD AVE",
            "city": "SUNNYVALE",
            "state": "CA",
            "postal_code": "940892231",
            "telephone_number": "408-337-6383"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1287 HAMMERWOOD AVE",
            "city": "SUNNYVALE",
            "state": "CA",
            "postal_code": "940892231",
            "telephone_number": "408-337-6383"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "ADDICTION CHANGE EXPERTS (ACE) MEDICAL INC",
        "organizational_subpart": "YES",
        "parent_organization_legal_business_name": "ADDICTION CHANGE EXPERTS (ACE) MEDICAL INC",
        "enumeration_date": "2025-11-12",
        "last_updated": "2025-11-12",
        "certification_date": "2025-11-12",
        "status": "A",
        "authorized_official_last_name": "SANTILLANO",
        "authorized_official_first_name": "EUGENE",
        "authorized_official_middle_name": "C",
        "authorized_official_title_or_position": "CEO/ PRESIDENT",
        "authorized_official_telephone_number": "408-337-6383",
        "authorized_official_name_prefix": "Dr.",
        "authorized_official_credential": "MD"
    },
    "taxonomies": [
        {
            "code": "207QA0401X",
            "taxonomy_group": "",
            "desc": "Family Medicine, Addiction Medicine",
            "state": "NU",
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Sunnyvale, CA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Nov 12, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.