Healthcare API / Discovery Engine Complete Guide: FHIR, MedLM & HIPAA

Cloud Healthcare API is GCP's integrated platform for medical data, supporting the three major medical standards: FHIR / HL7v2 / DICOM.Discovery Engine is the umbrella brand for Gen AI Search (covering Vertex AI Search, Recommendations, and more). In the healthcare space, it pairs with MedLM and Healthcare NLP to power EHR Q&A and clinical summarization.

Healthcare API Components

FHIR Store Example

from google.cloud import healthcare_v1

client = healthcare_v1.FhirStoreServiceClient()
fhir_store = "projects/PROJECT/locations/us-central1/datasets/my-dataset/fhirStores/my-fhir"

# 患者リソース作成
patient = {
    "resourceType": "Patient",
    "name": [{"family": "山田", "given": ["太郎"]}],
    "gender": "male",
    "birthDate": "1985-04-01",
}

# Bulk Export → BigQuery
client.export_resources(
    request={
        "name": fhir_store,
        "bigquery_destination": {
            "dataset_uri": "bq://my-project.fhir_export",
            "schema_config": {"schema_type": "ANALYTICS_V2"},
        },
    }
)

Healthcare NLP Example

from google.cloud import healthcare_v1

client = healthcare_v1.NlpServiceClient()
parent = "projects/PROJECT/locations/us-central1/services/nlp"

response = client.analyze_entities(
    nlp_service=parent,
    document_content="患者は 65 歳男性、高血圧と 2 型糖尿病の既往あり。メトホルミン 500mg を内服中。"
)

for entity in response.entity_mentions:
    print(f"{entity.text.content} → {entity.type_} (ICD-10: {entity.linked_entities})")
# 出力例:
# 高血圧 → PROBLEM (ICD-10: I10)
# 2 型糖尿病 → PROBLEM (ICD-10: E11)
# メトホルミン → MEDICINE (RxNorm)

MedLM (Healthcare-Specialized LLM)

• Enterprise-grade productization of Google Research's Med-PaLM family
• Clinical summarization, Q&A, and clinical coding assistance
• Accessed via Vertex AI; supports CMEK / VPC SC
• Covered by HIPAA BAA
• MedLM-Large / MedLM-Medium

Discovery Engine Components

• Vertex AI Search (general purpose)
• Vertex AI Search for Healthcare (specialized for medical documents)
• Vertex AI Search for Retail (e-commerce)
• Vertex AI Search for Media (video / audio)
• Recommendations AI (recommendations)
• Conversational Agents (formerly Dialogflow CX)

Pricing Examples

Regulatory Compliance

• Covered by HIPAA BAA (United States)
• GDPR Article 9 (special categories of personal data)
• FedRAMP High
• HITRUST CSF
• ISO 27001 / 27017 / 27018 / 27701
• Japan: Medical Information Guidelines (the 3-ministry, 2-guideline framework)

Typical Use Cases

• Cloud integration of EHR (electronic health record) systems
• Legacy HL7v2 → FHIR conversion
• Centralized management of radiology images (DICOM) plus AI-assisted diagnosis
• Clinical summarization (MedLM)
• Clinical research: FHIR Bulk Export → BigQuery for large-scale analysis
• Automated medical coding (Healthcare NLP)
• Patient-facing self-service Q&A (Vertex AI Search Healthcare)

* Google Cloud is a trademark of Google LLC. For the latest information, see the official Cloud Healthcare API documentation.