Open to opportunities

David Wainaina

@davidwainaina

Message

I am a certified medical billing specialist optimizing revenue and reducing claim denials.

Kenya

Message

What I'm looking for

I seek a role where I can apply billing and coding expertise to improve revenue cycle performance, reduce denials, ensure compliance, mentor staff, and contribute to an efficient, collaborative healthcare team.

I am a detail-oriented medical billing specialist with 6+ years of experience in healthcare billing, coding, and claims processing. I specialize in ICD-10 and CPT coding and leverage DrChrono EMR and QuickBooks to ensure accurate documentation, timely billing cycles, and regulatory compliance.

In recent roles I processed 150+ daily claims with a 98% first-pass acceptance rate, converted medical notes with 99.7% accuracy, reduced outstanding balances by 35%, and implemented a billing verification protocol that cut denials by 27%. I enjoy mentoring junior staff and improving workflows to maximize reimbursements and minimize administrative friction.

Experience

Work history, roles, and key accomplishments

Senior Medical Billing Specialist

Atlanta Medical Group

Jun 2023 - Mar 2025 (1 year 9 months)

Processed 150+ daily claims with a 98% first-pass acceptance rate, digitized medical notes into DrChrono with 99.7% accuracy, and reduced outstanding balances by 35% while implementing a verification protocol that cut claim denials by 27%.

ICD 10 CPT DrChrono EMR Quickbooks Claims Processing Denial Management Accounts Receivable

Medical Billing Specialist

Peachtree Healthcare Services

Aug 2020 - Jun 2023 (2 years 10 months)

Processed and submitted claims for multiple specialty practices achieving a 96% clean claim rate, reduced accounts receivable days by 22%, and trained 4 junior billing staff while producing monthly financial reports in QuickBooks.

ICD 10 CPT DrChrono EMR Quickbooks Accounts Receivable Staff Training

Medical Records Assistant

Northside Hospital

May 2018 - Aug 2020 (2 years 3 months)

Managed electronic medical records for 500+ patients, verified insurance eligibility prior to appointments, assisted with coding and billing during high-volume periods, and supported an EMR transition that improved workflows.

EMR Insurance Verification Medical Coding Documentation