Medical Billing Specialist

Published March 12th, 2026

Hiring for a Medical Billing Specialist in San Antonio, TX. This will be fully on-site!

Pay rate: $20-25/hr (based on experience)
Schedule (full time option): Monday-Friday 7:30am-4:30
Schedule (part-time options): 16-24 Hours a week 3-5 days a week or Monday-Friday 4-5 hours a day (i.e 12:00pm-5:00pm)

Responsibilities: 

  •  Review clinical documentation to ensure the appropriate coding (CPT codes, diagnosis codes, modifiers, etc)
  • Ensure all codes meet federal, state, and insurance-specific guidelines
  •  Communicate with payers via portals or phone to resolve outstanding payment issues
  •  Post insurance and patient payments accurately to the practice management system
  •  Maintain strict adherence to HIPAA regulations regarding patient data privacy
  • Audit medical records regularly to ensure proper coding & documentation supports the service billed

Must Haves:

  • Experience: Minimum 1 year of experience in outpatient billing, Vascular is a huge plus
  • Certification: CPC (Certified Professional Coder) or CCS (Certified Coding Specialist) preferred
  • Knowledge: Deep understanding of EOBs, RCM systems, and medical terminology specific to billing/coding
  • Software: Proficiency preferred with EHR systems, Availity, major insurance portals
  • Analytical Thinker with the ability to spot patterns in denials to suggest process improvements with payer specific
    coding
  • Persistence with a “detective” mindset to track down why a claim was rejected, find a resolution, and suggest an
    action plan to avoid future errors
  • Attention to Detail for high accuracy with little to no error in data entry
  • LCD Review/Monitoring to proactively check the Medicare and Commercial Payer Coverages for new and/or
    revised policies to ensure compliance

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