Cesar Abraham Santillana, MD

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

C-193242 Issued in CA

Practice address

1601 W Saint Marys Rd
Tucson, AZ 85745-2623

Phone

(520) 622-5833

NPI assigned

Apr 1, 2019

Sex

Male

Sole proprietor

No

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

Specialties & licenses 6

Addresses

Electronic endpoints 3

Medicare fee-for-service enrollment

Enrolled in FL, SC, VA, IL, IN, KY, AZ, NM, ME, CA11 enrollments

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 11

Specialty

Internal Medicine

Education

Other, 2018

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Quantum Bay Area Hospitalist Medical Group IncGroup PAC ID 0648573378, 60 clinicians

Apogee Medical Group IncGroup PAC ID 2961314265, 85 clinicians

Fairview Heights Medical Group SCGroup PAC ID 6800784083, 448 clinicians

McLeod Regional Medical Center of the Pee Dee IncGroup PAC ID 7416851852, 401 clinicians

County of Santa ClaraGroup PAC ID 1254244973, 1,000 clinicians

Baptist Health Medical Group IncGroup PAC ID 5597867184, 2,431 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• McLeod Regional Medical Center-Pee Dee Hospital, Florence, SC, CCN 420051
• Baptist Health Hardin Hospital, Elizabethtown, KY, CCN 180012
• Santa Clara Valley Medical Center Hospital, San Jose, CA, CCN 050038
• Good Samaritan Hospital Hospital, San Jose, CA, CCN 050380
• Kingman Regional Medical Center Hospital, Kingman, AZ, CCN 030055

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations (25 of 46)

Interoperability endpoints

• Direct secure messaging: csantillana236630@santaclaravalley.direct-ci.net
• FHIR API: https://fhir-myrecord.cerner.com/r4/MmWbh382tKlbvAIA1_DeLlIjYVSwroch/
• Direct secure messaging: csantillana576540@ahs.direct-ci.com

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

• Apogee Medical Group Inc

  • Internal Medicine Physician
  • Scottsdale, AZ
  • NPI 1760652218
  Medicare reassignment Care Compare group NPD
• Baptist Health Medical Group Inc

  • Family Medicine Physician
  • Paducah, KY
  • NPI 1922401611
  Medicare reassignment Care Compare group NPD
• Fairview Heights Medical Group SC

  • Multi-Specialty Clinic/Center
  • Saint Louis, MO
  • NPI 1679503668

  IL

  Medicare reassignment Care Compare group NPD
• McLeod Regional Medical Center of the Pee Dee, Inc

  • Emergency Medical Services (Emergency Medicine) Physician
  • Florence, SC
  • NPI 1154371433

  Internal Medicine

  Medicare reassignment Care Compare group NPD
• Quantum Bay Area Hospitalist Medical Group Inc

  • Hospitalist Physician
  • Mountain View, CA
  • NPI 1902279656

  Internal Medicine

  Medicare reassignment Care Compare group NPD
• County of Santa Clara

  • Mental Health Clinic/Center (Including Community Mental Health Center)
  • San Jose, CA
  • NPI 1699885079
  Medicare reassignment Care Compare group
• Tucson Physician Group Holdings, LLC

  • Interventional Cardiology Physician
  • Tucson, AZ
  • NPI 1356726939

  Internal Medicine

  Medicare reassignment NPD
• Baptist Primary Care Inc

  • Family Medicine Physician
  • Jacksonville, FL
  • NPI 1508817529

  Internal Medicine

  Medicare reassignment NPD
• Hospital Medicine Services of FL, LLC

  • Hospitalist Physician
  • Aventura, FL
  • NPI 1710684857
  Medicare reassignment NPD
• Hospital Physician Services of Florida PA

  • Hospitalist Physician
  • Pensacola, FL
  • NPI 1558718635

  Internal Medicine

  Medicare reassignment NPD
• Hospitalist Physicians of Indiana, PC

  • Hospitalist Physician
  • Fort Wayne, IN
  • NPI 1306576277

  Internal Medicine

  Medicare reassignment NPD
• Houlton Regional Hospital

  • Critical Access Hospital
  • Houlton, ME
  • NPI 1386804268
  Medicare reassignment NPD

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• Kingman Healthcare, Inc

  • General Acute Care Hospital
  • Kingman, AZ
  • NPI 1265423917
  Care Compare affiliation
• Baptist Healthcare System Inc

  • General Acute Care Hospital
  • Elizabethtown, KY
  • NPI 1689282147
  Care Compare affiliation
• County of Santa Clara

  • General Acute Care Hospital
  • San Jose, CA
  • NPI 1063406551
  Care Compare affiliation
• Good Samaritan Hospital, L.P.

  • General Acute Care Hospital
  • San Jose, CA
  • NPI 1437103777
  Care Compare affiliation
• McLeod Regional Medical Center of the Pee Dee, Inc.

  • General Acute Care Hospital
  • Florence, SC
  • NPI 1699756221
  Care Compare affiliation

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

{
    "created_epoch": "1554076800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1786665600000",
    "number": "1063974889",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "11342 SW 71ST LN",
            "city": "MIAMI",
            "state": "FL",
            "postal_code": "331731970",
            "telephone_number": "305-793-4750"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1601 W SAINT MARYS RD",
            "city": "TUCSON",
            "state": "AZ",
            "postal_code": "857452623",
            "telephone_number": "520-622-5833"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "820 Prudential Dr Ste 304",
            "address_purpose": "LOCATION",
            "city": "Jacksonville",
            "state": "FL",
            "postal_code": "322078205",
            "country_code": "US",
            "telephone_number": "904-202-3860",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "190 Sandy Springs Pl NE",
            "address_2": "Suite 100",
            "address_purpose": "LOCATION",
            "city": "Atlanta",
            "state": "GA",
            "postal_code": "303285908",
            "country_code": "US",
            "telephone_number": "404-383-4045",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "4500 Memorial Dr",
            "address_purpose": "LOCATION",
            "city": "Belleville",
            "state": "IL",
            "postal_code": "622265360",
            "country_code": "US",
            "telephone_number": "618-257-6220",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "11750 Bird Rd",
            "address_purpose": "LOCATION",
            "city": "Miami",
            "state": "FL",
            "postal_code": "331753530",
            "country_code": "US",
            "telephone_number": "305-223-2000 x6720",
            "fax_number": "305-227-5556",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "4801 Ambassador Caffery Pkwy",
            "address_purpose": "LOCATION",
            "city": "Lafayette",
            "state": "LA",
            "postal_code": "705086917",
            "country_code": "US",
            "telephone_number": "337-470-2605",
            "fax_number": "337-470-4595",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "SANTILLANA",
        "first_name": "CESAR",
        "middle_name": "ABRAHAM",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2019-04-01",
        "last_updated": "2026-08-14",
        "certification_date": "2026-08-14",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "IL",
            "license": "036162486",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "FL",
            "license": "ME153137",
            "primary": false
        },
        {
            "code": "208M00000X",
            "taxonomy_group": "",
            "desc": "Hospitalist",
            "state": "IL",
            "license": "036162486",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "NM",
            "license": "MD2022-1447",
            "primary": false
        },
        {
            "code": "208M00000X",
            "taxonomy_group": "",
            "desc": "Hospitalist",
            "state": "LA",
            "license": "339579",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CA",
            "license": "C-193242",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://epicproxy.et0965.epichosted.com/FHIRProxy/api/FHIR/DSTU2/",
            "affiliation": "N",
            "endpointDescription": "BJC",
            "use": "HIE",
            "useDescription": "Health Information Exchange (HIE)",
            "contentType": "CSV",
            "contentTypeDescription": "CSV",
            "address_1": "4500 Memorial Dr",
            "city": "Belleville",
            "state": "IL",
            "country_code": "US",
            "postal_code": "622265360",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "csantillano5312314@direct.casso.us.com",
            "affiliation": "N",
            "endpointDescription": "FMOLHS-Epic",
            "use": "DIRECT",
            "useDescription": "Direct",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "csantillano5312314@direct.casso.us.com",
            "address_1": "4801 Ambassador Caffery Pkwy",
            "city": "Lafayette",
            "state": "LA",
            "country_code": "US",
            "postal_code": "705086917",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://epicproxy.et0830.epichosted.com/FHIRProxy/api/FHIR/DSTU2/",
            "affiliation": "N",
            "endpointDescription": "FMOLHS FHIR URL",
            "use": "OTHER",
            "useDescription": "Other",
            "useOtherDescription": "FHIR API",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "C-CDA",
            "address_1": "4801 Ambassador Caffery Pkwy",
            "city": "Lafayette",
            "state": "LA",
            "country_code": "US",
            "postal_code": "705086917",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Mecheliz Santiago Amaro, LMSW
• Betzy Michelle Santiago Donato
• Enrique A Santiago, D.M.D., MBA/HCM
• Jose M Santiago, M.D.
• Lynda Santillan
• Adrian George Santini, MD
• Catherine Collette Santo, FNP-C
• Gwenn Santoro, M.D.
• Ydania Santos Virgen
• Colleen Santos, AZ LICENSED DOULA

• Internal Medicine Physician in Tucson, AZ
• Providers in Tucson, AZ by specialty
• Internal Medicine Physician in Arizona

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 14, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.