Medical Biller/Senior Medical Biller

City of Mesa•Mesa, AZ

About The Position

This recruitment will be used to fill the current vacancy at either the Medical Biller or Senior Medical Biller level. The first review of all applications will Monday, August 24, 2026. A Medical Biller performs paraprofessional work involving ambulance billing, accounting, and collection processes. A Senior Medical Biller independently performs advanced paraprofessional work involving ambulance billing, accounting, and collection processes. The Senior Medical Biller performs duties independently without specific instruction, including for the most complex accounts and issues by performing complex claim corrections, appeals, and follow up with payers and patients, requiring advanced billing/coding knowledge to ensure service is paid properly. In addition, this position assists with administrative tasks requiring advanced billing/coding knowledge to ensure service is paid properly and mentoring less experienced employees. This class is distinguished from the Medical Biller class by the more advanced technical and complex nature of the work performed; independent discretion in regards to complex claims; and administrative tasks.

Requirements

Any combination of training, education, and experience equivalent to graduation from an accredited college or university with an Associate’s Degree in Accounting, Finance, or closely-related field.
Two (2) years of experience in medical billing.
Two (2) years of experience in medical billing and coding, including eighteen months of experience with 911 ambulance coding and billing (for Senior Medical Biller).
Must not be on the Office of Inspector General (OIG) list of Excluded Individuals/Entities (LEIE).
Must possess a Certified Ambulance Coder (CAC) certification within one year of hire or promotion date.

Nice To Haves

Experience with Medicare/Medicaid regulations and laws is preferred.
Experience with ICD (International Statistical Classification of Diseases and Related Health Problems) coding is preferred.

Responsibilities

Verifying patients’ personal information (example: address, demographics, and insurance information)
Confirming insurance eligibility
Requesting authorization
Reviewing type of procedures performed such as basic or advanced life support, and entering diagnostic and procedure codes
Reviewing supply usage for medical care and number of miles driven for transportation
Entering data and converting information into an electronic patient care report (ePCR)
Processing and posting payments, adjustments, contractual allowances, and denials
Running payment reports
Monitoring account payment statuses
Rebilling delinquent claims when needed
Responding to internal inquiries regarding ambulance billing, accounts receivable, and collections
Reviewing and analyzing metrics
Generating and submitting paper and electronic claims to insurance companies
Sending notices of privacy practices to patients
Interpreting and applying covered and uncovered procedures, patients’ deductibles, co-pays, or co-insurances from insurance companies
Performing claim corrections, appeals, and follow up with payers and patients (complex for Senior Medical Biller)
Responding to inquiries from patients, hospitals, and insurance payers regarding transport claims
Setting up payment plans
Reviewing hardship requests
Explaining and educating patients on the billing process
May enter data and run reports in the Financial system (FIN)
Assisting management with streamlining processes, procedures, and policy development (Senior Medical Biller only)
Mentoring less experienced employees (Senior Medical Biller only)