---
type: "Bill"
title: "Health Insurance - Material Changes to Provider Networks - Notification and Special Enrollment Period"
description: "Health Insurance - Material Changes to Provider Networks - Notification and Special Enrollment Period"
jurisdiction: "us/states/md"
legislature: "Maryland General Assembly"
session: "2026"
identifier: "SB 521"
citation: "Maryland SB 521 (2026)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["Kramer"]
version_count: 3
action_count: 13
vote_count: 2
first_action: "2026-02-04"
last_action: "2026-05-26"
source: "openstates"
source_identifier: "ocd-bill/87026aec-05c5-4097-909f-7e44130c9a7f"
source_url: "http://mgaleg.maryland.gov/mgawebsite/Legislation/Details/sb0521?ys=2026RS"
source_hash: "fcaac5fc84572dda7ba1296ea0cc8696d21b3384357f6b04564e86d786323594"
vintage: "2026-07-01"
source_snapshot: "https://data.openstates.org/daily/2026-07-01/public.pgdump"
retrieved_at: "2026-07-06"
confidence: "reported"
tags: ["legislation", "bill", "us-md"]
---

# Maryland SB 521 (2026) — Health Insurance - Material Changes to Provider Networks - Notification and Special Enrollment Period

## Version chain

The bill's text revisions, in order — the diff chain from filing to enrollment.

1. **Chapter - Health Insurance - Material Changes to Provider Networks - Notification and Special Enrollment Period** (committee substitute) — [source](http://mgaleg.maryland.gov/2026RS/Chapters_noln/CH_650_sb0521t.pdf)
2. **First - Health Insurance - Material Changes to Provider Networks - Notification and Special Enrollment Period** (committee substitute) — [source](http://mgaleg.maryland.gov/2026RS/bills/sb/sb0521f.pdf)
3. **Third - Health Insurance - Material Changes to Provider Networks - Notification and Special Enrollment Period** (committee substitute) — [source](http://mgaleg.maryland.gov/2026RS/bills/sb/sb0521t.pdf)

## Votes

- On Third Reading — **45–0** (pass) · upper
- On Third Reading — **134–3** (pass) · lower

## Sponsors

- Kramer — primary (person)

## Timeline

The legislative action history — every referral, reading, and vote.

- **2026-02-04** First Reading Finance `referral-committee`
- **2026-02-12** Hearing 3/04 at 1:00 p.m.
- **2026-03-16** Favorable with Amendments Report by Finance `committee-passage-favorable`
- **2026-03-17** Favorable with Amendments { `committee-passage-favorable`
- **2026-03-17** Second Reading Passed with Amendments
- **2026-03-19** Third Reading Passed `passage`
- **2026-03-20** Referred Health `referral-committee`
- **2026-03-25** Hearing 4/02 at 1:00 p.m.
- **2026-04-03** Favorable Report by Health `committee-passage-favorable`
- **2026-04-03** Favorable Adopted Second Reading Passed `committee-passage-favorable`
- **2026-04-07** Third Reading Passed `passage`
- **2026-04-08** Returned Passed
- **2026-05-26** Approved by the Governor - Chapter 650 `executive-signature`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/87026aec-05c5-4097-909f-7e44130c9a7f`. Confidence: reported (aggregated from official Maryland legislature records).