diff --git a/backend/src/cyclone/db.py b/backend/src/cyclone/db.py
index f6c0bee..508b89a 100644
--- a/backend/src/cyclone/db.py
+++ b/backend/src/cyclone/db.py
@@ -249,6 +249,7 @@ class Claim(Base):
     service_date_to: Mapped[Optional[date]] = mapped_column(Date, nullable=True)
     charge_amount: Mapped[Decimal] = mapped_column(Numeric(12, 2), nullable=False, default=Decimal("0"))
     provider_npi: Mapped[Optional[str]] = mapped_column(String(16), nullable=True)
+    rendering_provider_npi: Mapped[Optional[str]] = mapped_column(String(16), nullable=True)
     payer_id: Mapped[Optional[str]] = mapped_column(String(32), nullable=True)
     state: Mapped[ClaimState] = mapped_column(
         Enum(ClaimState, native_enum=False), nullable=False, default=ClaimState.SUBMITTED
@@ -344,6 +345,7 @@ class Remittance(Base):
     claim_id: Mapped[Optional[str]] = mapped_column(
         String(64), ForeignKey("claims.id"), nullable=True
     )
+    rendering_provider_npi: Mapped[Optional[str]] = mapped_column(String(16), nullable=True)
     status_code: Mapped[str] = mapped_column(String(4), nullable=False)
     status_label: Mapped[Optional[str]] = mapped_column(String(32), nullable=True)
     total_charge: Mapped[Decimal] = mapped_column(Numeric(12, 2), nullable=False, default=Decimal("0"))
diff --git a/backend/src/cyclone/migrations/0019_add_rendering_and_service_provider_npis.sql b/backend/src/cyclone/migrations/0019_add_rendering_and_service_provider_npis.sql
new file mode 100644
index 0000000..63c7034
--- /dev/null
+++ b/backend/src/cyclone/migrations/0019_add_rendering_and_service_provider_npis.sql
@@ -0,0 +1,7 @@
+-- version: 19
+-- SP32: render & service-provider NPI extraction.
+-- Nullable: existing rows stay NULL until backfill runs.
+-- No indexes (used for set-equality, not range queries; nullable).
+
+ALTER TABLE claims ADD COLUMN rendering_provider_npi TEXT;
+ALTER TABLE remittances ADD COLUMN rendering_provider_npi TEXT;
\ No newline at end of file