Alejandro Mendez Castillo, M.D.

Primary specialty

Diagnostic Radiology PhysicianTaxonomy code 2085R0202X

License

2005027156 Issued in MO

Practice address

1101 W Liberty St
Farmington, MO 63640-1921

Phone

(573) 756-6451

NPI assigned

Dec 8, 2005

Last updated

Dec 21, 2025By the provider in NPPES

Sex

Male

Sole proprietor

Yes

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

Specialties & licenses 1

Addresses

Other identifiers 6

Medicare fee-for-service enrollment

Enrolled in IL, MO2 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 2

Specialty

Interventional Radiology

Education

Other, 1991

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Blessing HospitalGroup PAC ID 3072422534, 414 clinicians

Specialists in Medical Imaging SCGroup PAC ID 2163733544, 228 clinicians

SSM Health Care GroupGroup PAC ID 0143608372, 929 clinicians

NRG-Parkland LLCGroup PAC ID 5193141562, 4 clinicians

Interventional Pain Institute, LLCGroup PAC ID 1153451919, 9 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Parkland Health Center Hospital, Farmington, MO, CCN 260163
• Blessing Hospital Hospital, Quincy, IL, CCN 140015
• Parkland Health Center - Bonne Terre Hospital, Bonne Terre, MO, CCN 260779
• Barnes Jewish Hospital Hospital, Saint Louis, MO, CCN 260032
• Madison Medical Center Hospital, Fredericktown, MO, CCN 261302

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: amendezcastillo374829@direct-ehr-ssmhc.com
• FHIR API: https://fhir.blessinghospital.com/R4/open-Prod

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

• Interventional Pain Institute, LLC

  • Specialist
  • Festus, MO
  • NPI 1336461771

  Single Specialty

  Medicare reassignment Care Compare group NPD
• SSM Health Care Group

  dba SLUCare Physician Group

  • Internal Medicine Physician
  • Saint Louis, MO
  • NPI 1306589544

  Single Specialty

  Medicare reassignment Care Compare group NPD
• Blessing Hospital

  • Multi-Specialty Clinic/Center
  • Quincy, IL
  • NPI 1114471737

  MO, Single Specialty

  Medicare reassignment Care Compare group NPD
• Specialists in Medical Imaging SC

  • Diagnostic Radiology Physician
  • Olympia Fields, IL
  • NPI 1841687951

  Single Specialty

  Medicare reassignment Care Compare group NPD
• NRG-Parkland LLC

  • Diagnostic Radiology Physician
  • Farmington, MO
  • NPI 1902430481
  Medicare reassignment Care Compare group
• SSM Health Care St Louis

  dba SSM Health St Clare Fenton

  • Emergency Medicine Physician
  • Fenton, MO
  • NPI 1275586174

  Single Specialty

  Medicare reassignment NPD
• SSM Cardinal Glennon Childrens Hospital

  dba SSM Health Cardinal Glennon Children's Hospital

  • Pediatrics Physician
  • O'Fallon, IL
  • NPI 1174577670

  MO, Single Specialty

  Medicare reassignment NPD
• Blessing Hospital

  dba Blessing Health Monroe City

  • Rural Health Clinic/Center
  • Monroe City, MO
  • NPI 1013683507
  NPD
• Interventional Pain Institute, LLC

  • Interventional Pain Medicine Physician
  • Troy, MO
  • NPI 1013779271
  NPD
• SSM Cardinal Glennon Children's Hospital

  dba SSM Health Cardinal Glennon Pediatrics

  • Pediatrics Physician
  • Warrenton, MO
  • NPI 1962573212

  Single Specialty

  NPD
• SSM Health Care Group

  dba SLUCare Physician Group

  • Dermatopathology Physician
  • Saint Louis, MO
  • NPI 1932844495
  NPD
• SSM Health Care St. Louis

  dba SSM Health St. Mary's Hospital Physician Billing

  • Emergency Medicine Physician
  • Saint Louis, MO
  • NPI 1366400855

  Single Specialty

  NPD

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

• Barnes Jewish Hospital

  • General Acute Care Hospital
  • Saint Louis, MO
  • NPI 1649299827
  Care Compare affiliation
• Madison Medical Center Stockhoff Memorial Nursing Home

  • Critical Access Hospital
  • Fredericktown, MO
  • NPI 1720163025
  Care Compare affiliation
• Parkland Health Center

  dba Parkland Health Center - Farmington

  • General Acute Care Hospital
  • Farmington, MO
  • NPI 1003824061
  Care Compare affiliation
• Parkland Health Center

  dba Parkland Health Center - Farmington

  • Psychiatric Hospital Unit
  • Farmington, MO
  • NPI 1902814866
  Care Compare affiliation
• Parkland Health Center

  dba Parkland Health Center - Bonne Terre

  • Rural Acute Care Hospital
  • Bonne Terre, MO
  • NPI 1932117173
  Care Compare affiliation
• Blessing Hospital

  • Nurse Practitioner
  • Quincy, IL
  • NPI 1417204827

  Hospital

  Care Compare affiliation
• Blessing Hospital

  • General Acute Care Hospital
  • Quincy, IL
  • NPI 1760571699
  Care Compare affiliation

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

{
    "created_epoch": "1134000000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1766275200000",
    "number": "1649255076",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "15914 WOODLET PARK CT",
            "city": "CHESTERFIELD",
            "state": "MO",
            "postal_code": "630175033",
            "telephone_number": "573-999-6849"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1101 W LIBERTY ST",
            "city": "FARMINGTON",
            "state": "MO",
            "postal_code": "636401921",
            "telephone_number": "573-756-6451"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MENDEZ CASTILLO",
        "first_name": "ALEJANDRO",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2005-12-08",
        "last_updated": "2025-12-21",
        "certification_date": "2025-12-21",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2085R0202X",
            "taxonomy_group": "",
            "desc": "Radiology, Diagnostic Radiology",
            "state": "MO",
            "license": "2005027156",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "207432501",
            "state": "MO"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "GHP",
            "identifier": "4964V4964",
            "state": null
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "DEPT OF LABOR",
            "identifier": "140376000",
            "state": null
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "MERCY",
            "identifier": "431142188OSU",
            "state": null
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "HEALTHLINK",
            "identifier": "720096",
            "state": null
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "BCBS",
            "identifier": "1765",
            "state": "MO"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Abby Lynn Mell, ORT/L
• Caren Sue Mell, LCSW
• Karen Renee Melton, AU.D.
• Vladimir Melyakov, MD
• Yelena Melyakova, M.D.
• Lisa Mengwasser, FNP
• Myra Lyn Menjoulet, WHNP
• Luis R Mertins, MD
• Laura Lynn Metcalf
• Tierra Alise Metcalfe

• Diagnostic Radiology Physician in Farmington, MO
• Providers in Farmington, MO by specialty
• Diagnostic Radiology Physician in Missouri

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Dec 21, 2025; 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.