California Medical Provider Networks (MPN): Your Rights & Doctor Choice (2026)

Medical Provider Networks (MPNs) are a critical feature of California's workers' compensation system. Understanding MPN rules, your rights to choose and change doctors, and when you can opt out protects your access to quality medical care.

What Is an MPN?

Definition: Network of pre-approved doctors and medical providers for treating work injuries

California Labor Code § 4616: Employers with workers' comp insurance may establish MPNs

Purpose: Control medical costs while ensuring quality care

Your obligation: Generally must treat within MPN if employer has one

MPN status: Check with employer or claims administrator whether they use an MPN

Employer MPN Requirements

Must provide written notice: MPN information at time of hire and when claim filed

Notice must include:

• List of available providers
• How to select physician
• How to change physicians within MPN
• Second and third opinion rights
• Independent Medical Review (IMR) process
• Contact information for MPN

DWC Form MPN-1: Standard notice form

Language: Must be provided in employee's primary language if one of seven required languages

Your Right to Choose a Doctor

Initial Doctor Selection

If employer has MPN: Choose any doctor within the network

No MPN: Choose from employer-designated providers for first 30 days, then can request change

Pre-designation option: Select personal physician before injury occurs

Emergency care: Can seek emergency treatment anywhere, then transfer to MPN

Pre-Designation of Personal Physician

What it is: Selecting your own doctor before injury to be your workers' comp doctor

Requirements:

1. Notify employer in writing before injury
2. Doctor must be your primary care physician
3. Must have seen doctor at least once before injury
4. Doctor agrees to treat workers' comp injuries

Form: DWC Form 9783 "Primary Treating Physician Pre-Designation"

Advantage: Bypasses MPN - use your own doctor even if employer has MPN

Smart strategy: Pre-designate if you have chronic conditions or trust your doctor

Changing Doctors Within MPN

One-time change right: Can change to another MPN provider once without authorization

Subsequent changes: Need approval from claims administrator

How to request:

1. Contact MPN access assistant or claims administrator
2. Request change to specific doctor within network
3. Provide reason for change

Common valid reasons:

• Doctor not treating condition effectively
• Personality conflict
• Doctor not available
• Need specialist
• Geographic inconvenience

Invalid reasons:

• Don't like restrictions imposed
• Doctor won't certify temporary disability when not appropriate

Second and Third Opinion Rights

Second opinion: Available within MPN if disagree with diagnosis or treatment

Third opinion: If second opinion disagrees with first

Process:

1. Request second opinion from MPN
2. MPN must provide physician from different medical group
3. If opinions conflict, request third opinion
4. Third opinion is binding

Specialization: Second/third opinion doctors should have appropriate specialty

Independent Medical Review (IMR)

What it is: External review process for medical treatment disputes

When available: Claims administrator denies, modifies, or delays requested treatment

Who reviews: Independent physician selected by state-contracted review organization

Process:

1. Claims administrator denies treatment
2. File IMR application with DWC
3. Independent doctor reviews medical records
4. Decision within 30 days (expedited: 3 days for urgent)

Binding decision: IMR decision is final and binding

No cost: Free to injured workers

Learn more: California IMR Process

Leaving the MPN

When You Can Opt Out

If MPN doesn't meet access standards: Not enough providers in your area

Geographic access standards:

• Primary care: 3 physicians within 15 miles or 30 minutes
• Specialists: 3 within 30 miles or 60 minutes
• Rural areas: Different standards apply

How to challenge: File complaint with DWC if MPN doesn't provide adequate access

MPN access assistant: Must help you find providers meeting access standards

Transfer of Care

If leaving MPN: Can transfer medical records to new provider

One-time transfer: Treatment records must be provided within 15 days

Who pays: Claims administrator pays for transfer

MPN vs. HCO (Health Care Organization)

MPN: Network of providers, you choose doctor within network

HCO: Managed care organization (rare in California), assigns your doctor

Key difference: MPNs give you choice; HCOs assign

Trend: California primarily uses MPNs, HCOs being phased out

Common MPN Problems

Problem: MPN list outdated, doctors no longer accepting workers' comp

Solution: Contact MPN access assistant for current provider list

Problem: No specialists for your condition in MPN

Solution: Request out-of-network authorization; file IMR if denied

Problem: All nearby doctors have long wait times

Solution: Request out-of-network treatment due to access issues

Problem: MPN doctor refuses to provide needed treatment

Solution: Get second opinion within MPN; request IMR if treatment denied

Your Rights Checklist

You have the right to:

• Receive written MPN notice at hire and when injured
• Choose any doctor within MPN
• Change doctors once without approval
• Pre-designate your personal physician before injury
• Second and third opinions within MPN
• Independent Medical Review for treatment disputes
• MPN access assistant help finding providers
• Treatment within geographic access standards
• Medical records transfer if leaving MPN

MPN Access Assistant

Who they are: MPN employee who helps you navigate the network

Contact info: Must be on MPN notice

Can help with:

• Finding providers in your area
• Scheduling appointments
• Changing doctors
• Second opinion requests
• Understanding MPN rules
• Access complaints

Response time: Must respond to requests within one business day

Strategies for Best Medical Care

1. Pre-designate before injury: Use DWC Form 9783 to select your own doctor

2. Research MPN providers: Don't just pick first name - check reviews, specializations

3. Document everything: Keep copies of all MPN notices, provider lists, requests

4. Use second opinions: Don't accept inadequate treatment - get second opinion

5. Know IMR rights: Don't let claims administrator deny needed treatment

6. Change doctors if needed: Use your one-time change right if doctor isn't helping

7. Contact access assistant: They're required to help - use them

FAQs

Q: Can my employer force me to use their MPN? A: Yes, unless you pre-designated your personal physician before injury or MPN doesn't meet access standards.

Q: What if there's no MPN doctor near me? A: MPN must meet geographic access standards. If they don't, you can seek out-of-network care.

Q: How do I pre-designate my doctor? A: Complete DWC Form 9783, give to employer before injury, make sure doctor agrees to treat workers' comp.

Q: Can I see my regular doctor even if employer has MPN? A: Only if you pre-designated them before injury or they're in the MPN.

Q: What if MPN doctor won't approve treatment I need? A: Get second opinion within MPN, then file IMR if treatment still denied.

Q: Can I change doctors if I don't like mine? A: Yes, once without approval. Subsequent changes need claims administrator approval.

Q: What if I need a specialist not in the MPN? A: Request out-of-network authorization. If denied, file IMR.

Q: Do I have to use the first doctor assigned to me? A: No, you choose from MPN providers. You're not assigned to a specific doctor.

Q: How long does IMR take? A: Regular: 30 days. Expedited (urgent): 3 days.

Q: Does IMR cost anything? A: No, it's free for injured workers.

Related Topics

• California Workers' Comp Benefits
• Denied Claims in California
• Maximum Medical Improvement
• California Workers' Compensation Overview

Legal Disclaimer

This guide provides general information about Medical Provider Networks in California workers' compensation. MPN rules are complex and your rights depend on your specific situation. Consult a qualified California workers' compensation attorney for advice about your case.

Last updated: January 5, 2026