Summary
Overview
Work History
Education
Skills
Timeline
Generic

Luis Sobalvarro

Covina,CA

Summary

Results-driven billing specialist with extensive experience in medical collections and compliance. Expertise in analyzing EOBs and managing Medicare and Medi-Cal collections, contributing to improved recovery rates and operational efficiency. Skilled medical billing professional known for strong analytical capabilities and attention to detail. Proven track record in managing complex billing tasks and collaborating across departments to enhance payment processes and compliance. Great multitasker and critical thinker with devotion to accuracy and efficiency. Supervises and leads office to maximize and streamline functionality.

Overview

20
20
years of professional experience

Work History

Credit Balance Specialist

Keck Medicine Of USC
Los Angeles, California
12.2025 - Current
  • Reviewed and corrected discrepancies in account balances regularly.
  • Maintained accurate records of credit balances in the billing system.
  • Collaborated with finance team to ensure compliance with policies.
  • Assisted in generating reports on outstanding credit balances monthly.
  • Coordinated with insurance providers to resolve payment issues promptly.
  • Collaborated with other departments to ensure proper resolution of issues involving credits or refunds.
  • Identified trends in customer payment patterns that could indicate potential problems.

Medical Billing / Collections Specialist

Torrance Memorial Medical Center
Torrance, California
04.2022 - 10.2025
  • Analyzed EOBs to enhance collections strategies.
  • Specialized in UB claim forms interpretation.
  • Ensured HIPAA compliance across documentation processes.
  • Managed Medicare and Medi-Cal HMO collections efficiently.
  • Conducted detailed audits to identify root causes of denials.
  • Prioritized tasks for timely completion of assignments.
  • Demonstrated attention to detail in appeals and EOB reviews.

Medical Billing / Collections Specialist

Adventist Health White Memorial
Los Angeles, California
02.2020 - 04.2022
  • Medicare HMO and Medi-Cal HMO collections experience
  • Understanding UB claim forms
  • Knowledge of HIPAA compliance
  • Strong analysis of EOBs for collection purposes
  • Extremely detail oriented when working on appeals or reviewing EOBs
  • Ability to multitask with short timelines
  • Ability to prioritize, organize work, and complete assignments in a timely manner
  • Excellent interpersonal skills

Medical Collector III Business Office

HealthCare Partners Medical Group
Torrance, California
03.2019 - 01.2020
  • Conducted precise audits of patient accounts to verify accuracy of charges and adjustments.
  • Maintained proper aging of accounts receivable to facilitate timely collections.
  • Monitored payments to ensure compliance with agreed fee schedules.
  • Contacted patients and insurance carriers regarding delinquent accounts for resolution.
  • Negotiated payment plans, enhancing recovery of unpaid balances.
  • Demonstrated exceptional skill in addressing sensitive financial matters with patients.

Patient Financial Services Representative

Cedar Sinai Medical Center
Beverly Hills, California
02.2017 - 03.2018
  • Answer inquiries by full regarding basis of patient balances
  • Identifies Problem accounts with payers; investigates and corrects errors
  • Follows up on missing patient account information and resolves past due patient accounts.
  • Performed inbound and outbound functions regarding account balances
  • Billing/ Insurance follow up for facility (UB04) and physician (1500) claims
  • Empower to adjust accounts based on case by case basis
  • Contacts responsible party to resolve delinquent accounts; prepares payment plans and monitors adherence to plans by responsible party; directs accounts to outside collection agencies when necessary. Posts data; verifies and performs mathematical computations.

Patient Account Representative

Nthrive
El Segundo, California
07.2016 - 11.2016
  • Followed up on all claims from billing through final resolution
  • Reviewed and prepared claims for manual and or electric billing submission
  • Identified billing errors for correction and resubmit claims to insurance carriers
  • Followed up on payment errors, low reimbursement, denials, etc.
  • Reviewed insurance EOBs and initiated appeals as necessary
  • Printed and mailed UB04s or HCFA 1500s as necessary for account resolution.

Medical Biller/ Collector/ Insurance Follow Up

Navigant Cymetrix
Gardena, California
03.2014 - 07.2016

Performed daily downloads, reconciliations to electronic billing system (EPIC)

· Transmitted/released claims at a minimum daily productivity guideline

· Worked assigned claims daily-resolving edits, validating claim, or placing on hold · Followed-up on all assigned held claims or unreleased claims.

· Billed claims via electronic billing system.

· Reviewed same day and 72-hour admission report to determine if combining accounts · Filed adjusted billings based on audits and or changes in diagnosis or DRG.

· Appropriately documented electronic billing system and/or patient accounting system.

· Worked inpatient hospital accounts, works authorizations for inpatient accounts

· $200K inpatient high dollar claims and knows expected reimbursements per contracts leading to $30-40k

· Worked commercial and Medi-Cal secondary insurance payers

· Adjusted aged accounts back to 2011 and contacts AIM to verify if authorizations have been given

· Disputed denial retro authorizations with affidavit denial and medical records

· Changed DRG and revenue codes for adjustments for Providence accounts/ claims to reprocess

Medical Collector

Medical Imaging Center Of Southern California
Los Angeles, California
07.2013 - 03.2014

Reviewed correspondence, verify payment or denial, provided additional info such as full medical records

· Worked Scans, personal injuries and worker’s comp

· Handled cases on lien basis with attorneys

· Worked negotiations

· Follow up with insurance companies and attorneys regarding patient status and case status

· Explained account process with patients and reviewed hard copy EOB’s

· Worked only PPO’s (Aetna, Blue Shield, Blue Cross, SAG)

· Sent monthly follow up statements to patients

· Processed refunds and sent information to cash posting departments

· Types of procedures: MRI’s, Epidurals, CT Scans, MRA’s, Neuro Science

Medical Insurance Revenue Clerk

UCLA Medical Center / USCB
Los Angeles, California
01.2010 - 06.2013

Appeals for facility charges using UB04

· EOB denials working a load of 45 a day and appealed claims

· Contacted various insurances to resolve various denials and issues

· Provided professional billing services for UCLA Medical Center

· Customer Service duties including but not limited to answering phones, filing, faxing, scanning, and answering customer questions and concerns · Utilized software system: Medisoft

General Clerk / Volunteer

St. Vincent Medical Center LA
Los Angeles, California
11.2005 - 10.2010

Customer Service duties including but not limited to answering phones, filing, faxing, scanning, and answering customer questions and concerns, document correspondence into system.

· Patient charts pick up from various departments

· Assembled OP & GI packets

· Greeted Customers

Education

Medical Billing

American Career College
CA
07-2009

Skills

  • Claims processing
  • Insurance verification
  • Compliance auditing
  • Account reconciliation
  • Payment negotiation
  • Medical coding

Bilingual in Spanish and English

Medical Terminology

Medical Billing/Collections/Payment Posting

Medi-Cal/Medicare/PPO/HMO/Workers Compensation

EOB Review/ Reimbursements/ DOFR knowledge

UB-04/CMS-1500

HCPCS, CPT, ICD-9/10

EPIC, Medisoft, DSG

Timeline

Credit Balance Specialist

Keck Medicine Of USC
12.2025 - Current

Medical Billing / Collections Specialist

Torrance Memorial Medical Center
04.2022 - 10.2025

Medical Billing / Collections Specialist

Adventist Health White Memorial
02.2020 - 04.2022

Medical Collector III Business Office

HealthCare Partners Medical Group
03.2019 - 01.2020

Patient Financial Services Representative

Cedar Sinai Medical Center
02.2017 - 03.2018

Patient Account Representative

Nthrive
07.2016 - 11.2016

Medical Biller/ Collector/ Insurance Follow Up

Navigant Cymetrix
03.2014 - 07.2016

Medical Collector

Medical Imaging Center Of Southern California
07.2013 - 03.2014

Medical Insurance Revenue Clerk

UCLA Medical Center / USCB
01.2010 - 06.2013

General Clerk / Volunteer

St. Vincent Medical Center LA
11.2005 - 10.2010

Medical Billing

American Career College
Luis Sobalvarro