Wellmark
Last updated: March 2026
Wellmark is a regional (Iowa, South Dakota) health insurer, part of the Blue Cross Blue Shield (BCBS) family. They report 17K insurance plans covering 41K providers across 19K billing codes.
Data Version
Price Transparency Machine-Readable Files Snapshot
Overview
17K
Plans
XX% vs prev41K
Providers (NPIs)
XX% vs prev7.3K
Tax IDs
XX% vs prev19K
Billing Codes
XX% vs prev57K
Data Rows
XX% vs prevGeographic Coverage
Top states by provider count:
Data Breakdown
Plans Type (HIOS vs EIN)
HIOS | 2.8K |
EIN | 14K |
NPIs
Individual | 39K |
Group | 2.6K |
Tax IDs
EIN | 7K |
NPI (Individual) | 290 |
Billing Code Type
| Codes | Rows | |
|---|---|---|
CPT | 11K | 25K |
HCPCS | 5.3K | 20K |
RC | 540 | 6.8K |
CDT | 670 | 2.7K |
EAPG | 590 | 1.6K |
APR-DRG | 1.7K | 1.1K |
LOCAL | 61 | 10 |
Billing Class
| Rows | |
|---|---|
Professional | 33K |
Institutional | 24K |
Negotiated Type
| Rows | |
|---|---|
Fee Schedule | 48K |
Percentage | 4.7K |
Negotiated | 2.8K |
Per Diem | 1.4K |
Top States by # NPIs
Iowa | 21K |
South Dakota | 7.1K |
Nebraska | 4.4K |
Illinois | 1.5K |
Minnesota | 1K |
Top Taxonomies by # NPIs
Family Nurse Practitioner | 2.7K |
Family Medicine Physician | 2.4K |
Physician Assistant | 2.2K |
Physical Therapist | 2.2K |
Mental Health Counselor | 1.9K |
Want to explore Wellmark's actual negotiated rates?
See code-level rates by provider, specialty, and geography.
Historical Metrics
| Month | Plans | NPIs | Tax IDs | Billing Codes | Data Rows |
|---|---|---|---|---|---|
March 2026 | 17K | 41K | 7.3K | 19K | 57K |
February 2026 | 47K | 42K | 7.7K | 19K | 150K |
January 2026 | — | — | — | — | |
December 2025 | — | — | — | — | |
November 2025 | — | — | — | — |
Show all 13 months
Data Coverage Scorecard
This payer meets all 6 data quality criteria — their transparency files are comprehensive and well-structured.
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
Methodology
The scorecard evaluates each payer's monthly price transparency data against six quality criteria:
If 5–6 criteria pass, the overall rating is Good.
If 3–4 criteria pass, the rating is Acceptable.
If 0–2 criteria pass, the rating is Poor.
Behavioral, RX, and other specialty networks may not pass all criteria but can still contain complete and usable data.