Medical Billing and Credentialing Services: A Practical Guide for Healthcare and Mental Health Practices

Medical billing is the process of preparing and submitting healthcare claims to insurance companies to receive payment for medical services provided to patients.

In simple terms, medical billing helps healthcare providers get paid for the care they deliver.

For example, when you visit a doctor, the clinic provides a medical service. The billing department records the services, prepares a claim, and sends it to your health insurance company. The insurer reviews the claim and decides how much it will pay. You may need to pay the remaining balance, depending on your insurance coverage.

Credentialing in medical billing is the process of verifying a healthcare provider’s education, qualifications, licenses, work history, and professional background so they can become approved to provide services and receive payments from insurance companies. Credentialing helps insurance companies confirm that a doctor or other healthcare professional is qualified and eligible to participate in their insurance network.

For example, if a doctor opens a clinic and wants to treat patients covered by Aetna, UnitedHealthcare, or Cigna, the doctor generally needs to complete the insurance company’s credentialing and enrollment process before receiving in-network status.

Therapists, counselors, psychiatrists, and wellness providers spend their energy helping patients manage stress, anxiety, and emotional health. Yet behind every session is administrative work that can create its own challenges, from insurance enrollment and claim submission to denied claims and delayed payments. Two services handle most of this pressure: medical billing and credentialing services. Together, they protect your income and give you time back for patient care.

What Do Medical Billing and Credentialing Services Include?

Medical billing teams manage several tasks throughout the revenue cycle to keep claims moving and track payments. Their work typically includes:

• Charge Entry: Recording services, procedures, and charges based on the provider’s documentation.
• Claim Submission: Preparing and sending accurate claims to insurance companies.
• Denial Management: Reviewing rejected or denied claims, correcting errors, and submitting appeals when appropriate.
• Payment Posting: Recording payments received from insurance companies and patients.
• Insurance Follow-Ups: Checking unpaid claims and contacting payers about outstanding balances.
• Accounts Receivable Management: Tracking overdue payments and identifying claims that need further attention.

Medical Credentialing Services

Credentialing teams handle the administrative work required to establish and maintain a provider’s participation with insurance companies. Their responsibilities often include:

• CAQH Profile Management: Creating, updating, and maintaining provider information in the CAQH ProView database.
• Payer Applications: Preparing and submitting applications to insurance companies for provider credentialing and enrollment.
• Document Verification: Collecting and verifying professional licenses, NPI information, education records, and liability insurance documents.
• Application Follow-Ups: Contacting insurance companies to check application status and resolve missing information.
• Re-Credentialing: Updating provider records and completing periodic credentialing reviews to maintain network participation.
• Provider Enrollment Tracking: Monitoring approval status, effective dates, and payer enrollment details.

Why Mental Health Practices Need Both Services

Mental health practices often manage multiple insurance requirements while coordinating appointments, treatment plans, and ongoing patient care. Using professional medical billing services alongside credentialing support helps practices manage these administrative responsibilities without putting additional pressure on providers and office staff.

Here is why both services matter:

• Fewer Billing Disruptions: Accurate claim submission and timely follow-ups help practices address billing issues before they affect cash flow.
• Insurance Network Participation: Credentialing helps therapists, psychologists, psychiatrists, and other qualified providers establish and maintain relationships with insurance companies.
• Faster Payment Processing: Consistent claim tracking and denial management can reduce avoidable payment delays.
• Less Administrative Work: Outsourcing these responsibilities gives providers and support staff more time to focus on patient care and practice operations.
• Better Revenue Visibility: Regular payment posting and accounts receivable tracking help practice owners understand outstanding balances and incoming payments.
• Support for Practice Growth: Organized billing and credentialing processes make it easier to manage new providers, additional locations, and expanding patient panels.
• Lower Operating Costs: Outsourcing can reduce the costs of hiring, training, and maintaining full-time billing and credentialing staff.
• Better Compliance Support: Outsourced teams can help practices with provider documentation, follow payer requirements, and protect patient information under HIPAA. The practice remains responsible for its own compliance.

Credentialing Timeline: How Long Does It Take?

Medical credentialing timelines vary depending on the insurance company, application completeness, provider verification, and enrollment requirements. Professional medical credentialing services can help practices manage applications, track their progress, and follow up with insurance companies throughout the process.

The following table provides a general estimate of the different stages.

Credentialing / Enrollment Type	Stated Processing Time	Source
Commercial payer, medical network (Cigna example)	Typically 45 to 60 days after Cigna receives the application packet	Cigna Healthcare
Commercial payer, after approval (Cigna example)	Provider information typically loaded into directories and claim systems within 10 business days	Cigna Healthcare
Medicare, online (PECOS)	45 days if the application is complete and no site visit is required	CMS (2017 presentation)
Medicare, paper (CMS-855)	60 days if the application is complete and no site visit is required	CMS (2017 presentation)
Medicaid	Varies by state	Your state Medicaid agency

Gathering documents, completing your CAQH profile, and correcting errors can add time, so your total timeline is often longer than these figures. Cigna handles behavioral health credentialing through a separate process (Evernorth Behavioral Health), so mental health providers should confirm the steps and timeline with that network directly. Actual Medicare timelines can also vary by contractor.

Why delays happen: According to a 2017 CMS presentation, roughly 30 to 35 percent of Medicare enrollment applications are delayed and need at least one round of corrections. Common causes include missing documents, missing signatures or dates, incorrect information, and missing application fees. When the Medicare Administrative Contractor requests missing information, providers have 30 days to respond. Failing to respond can delay the application, result in rejection, or affect the provider’s effective date. Submitting a complete application the first time helps protect your timeline.

Common Mental Health Billing Denials and How to Fix Them

A denied insurance claim can delay reimbursement and create additional work for a mental health practice. Review the explanation of benefits (EOB) or electronic remittance advice (ERA) to understand why the payer rejected the claim. Once the reason is clear, the billing team can review the information, correct errors when appropriate, and determine whether an appeal is necessary.

Here are some billing issues mental health practices may encounter and how to address them:

1. Incorrect Patient or Insurance Information

Errors in patient details or insurance information can prevent a claim from being processed correctly. Common issues include an incorrect member ID, misspelled name, outdated insurance details, or an incorrect date of birth.

How to Fix It: Verify patient demographics and insurance information against the latest insurance card and eligibility records. Correct any errors before resubmitting the claim.

2. Missing Prior Authorization

Some insurance plans require prior authorization before covering certain mental health services. A claim may be denied if the required authorization is missing, expired, or does not cover the service provided.

How to Fix It: Check the patient’s plan requirements before treatment. Confirm the authorization number, approved service, provider, and authorized dates. If authorization is missing, contact the payer to understand whether a retroactive review or appeal is available.

3. Incorrect CPT or Diagnosis Codes

Mental health claims require accurate coding that reflects the services provided and the provider’s clinical documentation. A mismatch between the procedure code, diagnosis code, or documented service may lead to a denial.

How to Fix It: Review the clinical record and compare it with the submitted codes. Correct coding errors when supported by the documentation and applicable coding guidelines. Avoid changing codes to obtain payment.

4. Provider Credentialing or Enrollment Issues

A claim may encounter problems if the rendering provider is not properly enrolled with the insurance plan or the provider information on the claim does not match the payer’s records.

How to Fix It: Check the provider’s enrollment status, participation agreement, effective date, and billing details. Contact the insurance company to resolve any discrepancies and confirm how to correct the claim.

5. Duplicate Claim Submissions

Submitting the same claim more than once can result in a duplicate claim denial. This may happen when a practice resubmits a claim without checking whether the payer has already received or processed it.

How to Fix It: Review the claim status and submission history before sending another claim. If the original claim is still pending, contact the payer before submitting another one. If you need a corrected claim, follow the payer’s required resubmission process.

6. Missed Timely Filing Deadlines

Insurance companies set deadlines for submitting initial and corrected claims. Missing the applicable deadline may result in a denial, even when the service was covered under the patient’s plan.

How to Fix It: Maintain a record of each payer’s filing requirements and monitor claim submission dates. If a claim is denied for timely filing, review the submission records and check whether the payer allows an appeal or exception.

Practical tip: Keep the denial reason, correction made, resubmission date, and follow-up outcome documented for each affected claim. This gives the billing team a clear record and helps identify recurring issues that may need attention.

How to Choose the Right Medical Billing and Credentialing Partner

Choosing a medical billing and credentialing partner requires more than comparing service prices. Mental health practices should look for a company that understands behavioral health billing, communicates clearly, and handles sensitive patient and provider information responsibly.

Before signing an agreement, consider these factors:

1. HIPAA and Data Security

Ask how the company protects patient information and controls access to billing records. Check whether it follows appropriate HIPAA safeguards and is willing to sign a Business Associate Agreement (BAA) when required.

2. Experience With Mental Health Practices

Look for a team familiar with behavioral health services, including therapy, psychiatry, and psychological care. Experience with mental health billing can help the team understand specialty-specific coding, documentation, and payer requirements.

3. Clear Reporting and Communication

A reliable partner should provide understandable reports about claim status, outstanding balances, denials, payments, and credentialing applications. Ask how often reports are shared and who will answer questions about your account.

4. Transparent Pricing

Understand how the company calculates its fees. Ask about percentage-based charges, flat fees, setup costs, additional services, and any charges that may apply outside the agreed scope.

5. Clear Contract Terms

Review the agreement before committing. Pay attention to:

• Contract duration and renewal conditions
• Cancellation and termination policies
• Included services and additional charges
• Responsibility for claim follow-ups and appeals
• Data access and transfer after termination
• Response times and communication expectations

6. Realistic Credentialing Expectations

Be cautious of companies that guarantee insurance credentialing approval. Insurance companies make decisions based on provider qualifications, documentation, and enrollment requirements. A service provider can manage applications and follow-ups, but cannot control the payer’s final decision.

7. Avoid Unnecessary Lock-In

Check whether the contract allows you to end the relationship with reasonable notice. Watch for contract commitments, unclear cancellation fees, or restrictions that make it difficult to access your records or switch to another service provider.

Before deciding: Ask for a service breakdown, sample reports, pricing details, and a written agreement. Comparing these details can help you choose a partner whose services and terms match your practice’s needs.

Is It Necessary to Outsource Medical Billing Services?

No, outsourcing medical billing services is not necessary for every mental health practice. Practices with experienced in-house billing staff, sufficient resources, and manageable claim volumes may prefer to handle billing internally. However, outsourcing can be a practical option for practices that want access to specialized billing support without maintaining a full in-house team. Before choosing a provider, practices should compare costs, review service agreements, and evaluate data security practices (Outsource Accelerator, n.d.).

References

• Cigna Healthcare. “Credentialing in Cigna Healthcare.” https://www.cigna.com/health-care-providers/credentialing
• Centers for Medicare & Medicaid Services. “Medicare & Medicaid Provider Enrollment” (Decision Health presentation, April 2017). https://www.cms.gov/Medicare/Provider-Enrollment-and-Certification/MedicareProviderSupEnroll/Downloads/DecisionHealthPresentation.pdf
• Outsource Accelerator. (n.d.). Medical billing.
  https://www.outsourceaccelerator.com/articles/medical-billing/

About the Author

John Watson founded StressHealed, a platform dedicated to evidence-based content on stress, wellbeing, and healthcare for nurses and frontline medical workers. John researches and writes about the healthcare system, from clinical workflows to workforce burnout, with content grounded in peer-reviewed studies, industry reports, and insights gathered directly from healthcare professionals.

Connect: stresshealed.com