curl "https://api.haau3.com/v1/fhir/r4/InsurancePlan/H3359-038-000/\$in-network?npi=1518929058&npi=1992700001" \
  -H "Authorization: Bearer $HAAU3_API_KEY"

import { Haau3 } from "@haau3/sdk";

const haau3 = new Haau3(); // reads HAAU3_API_KEY
const parameters = await haau3.checkInsurancePlanNetwork("H3359-038-000", {
  npi: ["1518929058", "1992700001"],
});
for (const parameter of parameters.parameter ?? []) console.log(parameter.name);

from haau3 import Haau3

client = Haau3()  # reads HAAU3_API_KEY
parameters = client.check_insurance_plan_network("H3359-038-000", npi=["1518929058", "1992700001"])
for parameter in parameters.get("parameter", []):
    print(parameter.get("name"))

package main

import (
	"context"
	"fmt"
	"log"

	"github.com/haau3/haau3-go"
)

func main() {
	ctx := context.Background()
	client, err := haau3.NewClient() // reads HAAU3_API_KEY
	if err != nil {
		log.Fatal(err)
	}
	parameters, err := client.CheckInsurancePlanNetwork(ctx, "H3359-038-000", haau3.CheckInsurancePlanNetworkParams{NPI: []string{"1518929058", "1992700001"}})
	if err != nil {
		log.Fatal(err)
	}
	for _, parameter := range parameters.Parameter {
		if parameter.Name != nil {
			fmt.Println(*parameter.Name)
		}
	}
}

{
  "resourceType": "Parameters",
  "parameter": [
    {
      "name": "plan",
      "valueReference": {
        "reference": "InsurancePlan/H3359-038-000"
      }
    },
    {
      "name": "data-date",
      "valueDate": "2026-10-14"
    },
    {
      "name": "network",
      "part": [
        {
          "name": "network",
          "valueReference": {
            "reference": "Organization/Organization-ed682d9f-98da-4ada-a081-04b4f80fe9f3",
            "display": "Healthfirst Medicare Network H3359"
          }
        },
        {
          "name": "organizations-listed",
          "valueInteger": 0
        }
      ]
    },
    {
      "name": "provider",
      "part": [
        {
          "name": "npi",
          "valueIdentifier": {
            "system": "http://hl7.org/fhir/sid/us-npi",
            "value": "1518929058"
          }
        },
        {
          "name": "status",
          "valueCoding": {
            "system": "https://haau3.com/fhir/CodeSystem/plan-benefits-network-status",
            "code": "in-network",
            "display": "In network"
          }
        },
        {
          "name": "evidence",
          "valueReference": {
            "reference": "PractitionerRole/PractitionerRole-0000099c-a432-43eb-a399-61a936d5cc60"
          }
        }
      ]
    },
    {
      "name": "provider",
      "part": [
        {
          "name": "npi",
          "valueIdentifier": {
            "system": "http://hl7.org/fhir/sid/us-npi",
            "value": "1992700001"
          }
        },
        {
          "name": "status",
          "valueCoding": {
            "system": "https://haau3.com/fhir/CodeSystem/plan-benefits-network-status",
            "code": "not-in-directory",
            "display": "Not in the directory"
          }
        }
      ]
    },
    {
      "name": "source",
      "valueString": "CMS National Provider Directory: https://directory.cms.gov/fhir"
    }
  ]
}

{
  "resourceType": "OperationOutcome",
  "issue": [
    {
      "severity": "fatal",
      "code": "<string>",
      "details": {
        "text": "<string>"
      },
      "diagnostics": "<string>",
      "expression": [
        "<string>"
      ]
    }
  ]
}

{
  "resourceType": "OperationOutcome",
  "issue": [
    {
      "severity": "fatal",
      "code": "<string>",
      "details": {
        "text": "<string>"
      },
      "diagnostics": "<string>",
      "expression": [
        "<string>"
      ]
    }
  ]
}

{
  "resourceType": "OperationOutcome",
  "issue": [
    {
      "severity": "fatal",
      "code": "<string>",
      "details": {
        "text": "<string>"
      },
      "diagnostics": "<string>",
      "expression": [
        "<string>"
      ]
    }
  ]
}

{
  "resourceType": "OperationOutcome",
  "issue": [
    {
      "severity": "fatal",
      "code": "<string>",
      "details": {
        "text": "<string>"
      },
      "diagnostics": "<string>",
      "expression": [
        "<string>"
      ]
    }
  ]
}

{
  "resourceType": "OperationOutcome",
  "issue": [
    {
      "severity": "fatal",
      "code": "<string>",
      "details": {
        "text": "<string>"
      },
      "diagnostics": "<string>",
      "expression": [
        "<string>"
      ]
    }
  ]
}

{
  "resourceType": "OperationOutcome",
  "issue": [
    {
      "severity": "fatal",
      "code": "<string>",
      "details": {
        "text": "<string>"
      },
      "diagnostics": "<string>",
      "expression": [
        "<string>"
      ]
    }
  ]
}

{
  "resourceType": "OperationOutcome",
  "issue": [
    {
      "severity": "fatal",
      "code": "<string>",
      "details": {
        "text": "<string>"
      },
      "diagnostics": "<string>",
      "expression": [
        "<string>"
      ]
    }
  ]
}

{
  "resourceType": "OperationOutcome",
  "issue": [
    {
      "severity": "fatal",
      "code": "<string>",
      "details": {
        "text": "<string>"
      },
      "diagnostics": "<string>",
      "expression": [
        "<string>"
      ]
    }
  ]
}

{
  "resourceType": "OperationOutcome",
  "issue": [
    {
      "severity": "fatal",
      "code": "<string>",
      "details": {
        "text": "<string>"
      },
      "diagnostics": "<string>",
      "expression": [
        "<string>"
      ]
    }
  ]
}