NEWMedicare Advantage 2027 plans are live in the API.Read the changelog
INSURER

Blue Cross and Blue Shield of Montana provider networks, plan by plan.

InPlan holds provider listings for 67 Blue Cross and Blue Shield of Montana marketplace (ACA) plans in Montana. Together they hold more than 7.7 million provider-plan links, each with the date we read the directory.

InPlan is independent and not affiliated with Blue Cross and Blue Shield of Montana. Plan and insurer names appear as the plans publish them.

PLANS WITH LISTINGS
67
STATE
Montana
PLAN YEARS
2026
LATEST READ
2026-08-12

What we hold for Blue Cross and Blue Shield of Montana.

Each plan below has a provider directory that lists providers in our data. The API answers from these listings, one provider and one plan at a time, and returns the source type and read date with every answer.

Blue Cross and Blue Shield of Montana plans with provider listings, by market
MARKETPLANSSTATESPLAN YEARSPROVIDER-PLAN LINKSLATEST READ
Marketplace (ACA)67120267,794,6672026-08-12

How we count: a plan counts when its provider directory lists at least one provider in our data. A provider-plan link is one listing of one provider in one plan. For marketplace plans it counts each plan year and network tier the directory gives; for Medicare Advantage plans it counts each provider once per plan.

Where: Montana.

Plans with provider listings in each state. A Medicare Advantage plan that serves several states counts in each of them.

Blue Cross and Blue Shield of Montana plans with provider listings, by state
STATEMARKETPLACE PLANS
Montana67

Example Blue Cross and Blue Shield of Montana plans.

5 of the plans we hold, with the plan ID the API takes. Look any plan ID up for free with the plan ID lookup.

Example plans with provider listings
PLANPLAN IDYEARTYPESTATEPROVIDER-PLAN LINKS
Blue Preferred Gold PPO℠ 204Blue Cross and Blue Shield of Montana30751MT05500382026Marketplace (ACA)Gold · PPOMontana119,590
Blue Preferred Silver PPO℠ 203Blue Cross and Blue Shield of Montana30751MT05500392026Marketplace (ACA)Silver · PPOMontana119,590
Blue Preferred Bronze PPO℠ 201Blue Cross and Blue Shield of Montana30751MT05500402026Marketplace (ACA)Expanded Bronze · PPOMontana119,590
Blue Preferred Security PPO℠ 200Blue Cross and Blue Shield of Montana30751MT05500422026Marketplace (ACA)Catastrophic · PPOMontana119,590
Blue Preferred Gold PPO℠ 204Blue Cross and Blue Shield of Montana30751MT05500432026Marketplace (ACA)Gold · PPOMontana119,590
SAMPLE ANSWER

Is Heather Cashell, CSW in this Blue Cross and Blue Shield of Montana plan?

Yes. The directory for 30751MT0550038 lists Heather Cashell, CSW in Hamilton, MT. This is the answer the API gives today for that pair, with its source type and the date we read the listing.

Requestany language that speaks HTTP
curl -H "Authorization: Bearer $INPLAN_KEY" \
  "https://api.inplan.io/v1/check?npi=1003007154&plan_id=30751MT0550038"
Response, trimmed200 OK
{
  "npi": "1003007154",
  "plan_id": "30751MT0550038",
  "market": "aca",
  "in_network": true,
  "answer": "listed",
  "plan_year": 2026,
  "source": { "type": "insurer_directory", "as_of": "2026-08-12" }
}
NPI 1003007154PLAN 30751MT0550038

Heather Cashell, CSW

Clinical Social Worker · Hamilton, MT

Listed

PLAN
Blue Preferred Gold PPO℠ 204
INSURER
Blue Cross and Blue Shield of Montana
MARKET
Marketplace (ACA), plan year 2026
PLAN TYPE
Gold · PPO
NETWORK TIER
BLUE-PREFERRED-PPO
SOURCE
insurer_directory · read 2026-08-12
One real answer, as the API returns itCheck another pair
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Check any provider against Blue Cross and Blue Shield of Montana plans.

Send an NPI and a plan ID, get an answer with its evidence. Or ask for every plan that lists a provider. A free key gives 500 calls a month.

More to explore

Figures counted 2026-10-30. Sources: provider directories published by insurers and plans; public plan and provider registries.