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Regional Payer (Iowa, South Dakota)Blue Cross Blue Shield (BCBS) family

Payer price transparency data

Wellmark

Wellmark is a regional (Iowa, South Dakota) health insurer, part of the Blue Cross Blue Shield (BCBS) family. They report 11K insurance plans covering 43K providers across 19K billing codes.

Source: public Transparency in Coverage filesRefreshed monthly, latest September 202619 monthly releases tracked

Monthly release

11K

Plans

XX% vs prior month

43K

Providers (NPIs)

XX% vs prior month

7.5K

Tax IDs

XX% vs prior month

19K

Billing codes

41K

Rate rows

XX% vs prior month

September 2026 release

What's in Wellmark's data

A profile of the machine-readable files Wellmark publishes, after PayerPrice parses and normalizes them.

Billing code types

Distinct codes and rate rows by code system

CodesRows
  • CPT11K17K41%
  • HCPCS5.9K15K37%
  • RC5403.8K9.3%
  • EAPG5903K7.3%
  • CDT6602K4.8%
  • APR-DRG3305301.3%
  • LOCAL604<0.1%

Billing class

Professional vs. institutional rate rows

  • Professional27K66%
  • Institutional14K34%

Negotiation arrangement

How each rate is expressed

  • Fee Schedule33K82%
  • Negotiated4.2K10%
  • Percentage2.6K6.4%
  • Per Diem7201.8%

Plan identifiers

HIOS IDs mark individual and small-group plans; EINs mark employer plans

  • HIOS ID2K18%
  • EIN9.3K82%

Providers by type

Distinct NPIs by entity type

  • Individual (Type 1)40K94%
  • Organization (Type 2)2.6K6.1%

Tax IDs by type

How provider groups are identified

  • EIN7.2K96%
  • NPI (Individual)2803.8%

Top states

States with the most providers in network

  • Iowa22K
  • South Dakota7.3K
  • Nebraska4.7K
  • Illinois1.6K
  • Minnesota1.1K
  • California570

Top specialties

Provider taxonomies with the most NPIs

  • Family Nurse Practitioner2.8K
  • Family Medicine Physician2.4K
  • Physician Assistant2.4K
  • Physical Therapist2.3K
  • Mental Health Counselor2.1K
  • Nurse Practitioner1.9K

These are the files. Want the rates inside them?

Look up Wellmark's negotiated rates by provider, TIN, billing code and plan.

Month-over-month history

Track how network size and rate volume change with each monthly release.

MonthPlansNPIsTax IDsBilling codesRate rows
September 202611K43K7.5K19K41K
August 202613K42K7.4K19K38K
July 202630K42K7.4K19K75K
June 2026————
May 2026————

Data quality scorecard

6/6Good

This payer meets all 6 data quality criteria — their transparency files are comprehensive and well-structured.

Evaluated on the September 2026 release.

  • Professional & Institutional Rates

    Data includes both professional and institutional billing class rates

  • Valid Tax IDs

    More than 80% of Tax IDs are EIN or NPI (Organization) type

  • HIOS Plan

    Data includes at least one HIOS-identified plan

  • Low Derived/Percentage Rates

    Less than 10% of negotiation entries are derived or percentage type

  • Standard Code Coverage

    Sufficient CPT and HCPCS code coverage with low proportion of LOCAL entries

  • Common Taxonomies

    NPIs in the dataset cover at least 50 distinct provider taxonomies

How the score works

Each monthly release is checked against six criteria. 5–6 passing criteria rate Good, 3–4 rate Acceptable, and 0–2 rate Poor.

Behavioral, RX, and other specialty networks may not pass all criteria but can still contain complete and usable data.

Access the data

Wellmark's negotiated rates, in the tools your team already uses

PayerPrice turns raw transparency files into one clean, normalized dataset across 180+ payers, refreshed every month. Pick how you want to work with it.

UI

Web app

Search Wellmark's rates by code, provider or market and export the results. No setup required.

Start free trial
API

REST API

Pull negotiated rates, providers and benchmarks into your own products and pipelines.

Explore the API
SQL

Snowflake & Databricks

Query the full normalized dataset with SQL or PySpark, shared directly into your warehouse.

See data sharing
AI

MCP server

Ask Claude, Cursor or your own agents questions like "What does Wellmark pay for CPT 99213 near me?"

Read the MCP docs
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Frequently asked questions

About Wellmark's price transparency data.

What price transparency data does Wellmark publish?

Wellmark's September 2026 Transparency in Coverage files list 11K plans, 43K providers (NPIs), 7.5K tax IDs and 19K billing codes, for 41K negotiated rate rows in total.

Which states does Wellmark's network cover?

Wellmark's files include providers in 51 states. The states with the most in-network providers are Iowa, South Dakota, Nebraska, Illinois, Minnesota.

How often is Wellmark's data updated?

Payers must post updated machine-readable files every month. PayerPrice processes Wellmark's files monthly; the latest processed release is September 2026, and 19 monthly releases are available.

What is the Transparency in Coverage rule?

Since July 2022, the federal Transparency in Coverage rule has required most group health plans and health insurers to publish machine-readable files of their in-network negotiated rates and out-of-network allowed amounts, updated monthly. These files are the source for the data on this page.

How can I access Wellmark's negotiated rates?

Start a free PayerPrice trial to search Wellmark's rates in the web app, or book a demo to get the full dataset through the REST API, SQL in Snowflake or Databricks, or AI assistants through the PayerPrice MCP server.