Medical Billing Virtual Assistant — Philippines
Open to new client engagements

Every claim, followed through to resolution.

A Philippines-based medical billing virtual assistant offering offshore revenue cycle management for U.S. medical practices — insurance verification, claims, denials, appeals, and payment posting — built on almost a decade serving U.S. clients since 2017. Currently supporting U.S. mental and behavioral health providers end to end, from eligibility check to posted payment.

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Portrait of Mark Rendez Maranan
03Years in dedicated RCM
2017Serving U.S. clients since
08+EHR / EMR platforms
16+Payer & payment portals

Career Summary

I've been serving U.S. clients since 2017 — starting in customer service and healthcare-adjacent support roles before moving fully into medical billing in the Philippines and revenue cycle management in 2023. That grounding shows up in how I work with claims: clear communication, steady follow-up, and comfort talking directly with providers and patients.

I specialize in revenue cycle management — the full path a claim takes from a patient's insurance card to a posted payment. My background spans insurance verification, claims submission through both paper and electronic methods, denial follow-up and appeals, payment posting and reconciliation, and client reporting. I started as a Medical Billing Specialist and was promoted to Team Lead within my first billing company. Since September 2024, I've worked as a dedicated RCM virtual assistant for U.S.-based medical billing companies, currently focused on mental and behavioral health providers — offering the kind of offshore staffing support U.S. practices increasingly rely on from the Philippines.

"Nothing sits in pending without a next action — every claim has a status, and every status has a plan."

How A Claim Moves

Submitted
Verified
Processing
Paid
Denied
Appealed
Submitted
Verified
Processing
Paid
Denied
Appealed

Most claims move straight across. When one gets denied, it doesn't get filed away — it gets appealed and followed back to paid.

Medical Billing & RCM Services

Offering medical billing in the Philippines and virtual assistant support for U.S. medical practices, clinics, and billing companies — a cost-effective offshore alternative to hiring in-house, without giving up hands-on RCM expertise.

Insurance Verification

Checking eligibility and benefits before every visit — copays, coinsurance, and deductibles confirmed so claims go out clean the first time.

270/271Eligibility
270 eligibility request → 271 payer response → benefits confirmed

Claims Submission & Billing

Billing out claims to insurance accurately and on time, through both electronic (837) and paper submission where required.

837CMS-1500
Charge entry → 837P transmission → payer acknowledgment

Payment Posting & Reconciliation

Posting patient and insurance payments as they come in, reconciling EOBs across payer portals so your numbers always match.

835ERA / EOB
835 ERA received → payment posted → reconciled to the penny

Claims Follow-Up & A/R

Chasing down unpaid and aging claims before they become write-offs — every account followed until it's resolved, not just filed.

AR AgingTimely Filing
A/R aging report → oldest first → worked until resolved

Denials & Appeals Management

Reviewing denied and rejected claims, filing reconsiderations and appeals, and tracking each one through to resolution.

277Reconsiderations
Denial received → root cause found → appeal filed → tracked to payment

Prior Authorization Support

Requesting and following up on prior authorizations so care doesn't stall waiting on paperwork.

Pre-AuthPayer Portals
Auth request submitted → status followed → approval before service

Medical Virtual Assistant Support

General administrative support for practices and billing companies — scheduling, patient communication, and inbox management alongside billing work.

SchedulingInbox
Calendar managed → patients reached → nothing slips through

Client Reporting

Turning claims and collections activity into plain-language status updates, so you always know where things stand without digging through a portal.

KPIStatus Updates
Raw claims data → plain-language summary → you always know where things stand

Work Experience

RCM / Medical Billing Specialist & Payer Implementation Specialist
Mental & Behavioral Health Providers (U.S. Clients)
Sept 2024 – Present
CURRENT
  • Verify insurance eligibility and benefits; confirm copays, coinsurance, and deductibles ahead of each patient visit, and send consent forms in advance.
  • Review and follow up on denied or pending claims; manage reconsiderations and appeals through the Availity and UnitedHealthcare provider portals.
  • Pull timely-filing proof and reports through Waystar EDI Insight.
  • Post patient and insurance payments across Payspan, Zelis, Echo/Optumpay, Authorize.net, and Stripe.
  • Maintain reconciliation spreadsheets connecting claims, appointments, and payments; monitor payer alert emails and flag key updates for management.
  • Submit claims manually for payers without automated options; match rebate invoices against internal records for accuracy.
  • Update trading-partner records for 837 claims and 835 ERA/EFT files, and support enrollment form review.
  • Work daily inside CollaborateMD, Kareo/Tebra, Insync, AthenaOne/AthenaHealth, Elation, and Zentake.
RCM / Medical Billing Specialist
Microsourcing Philippines
March 2023 – Aug 2024
COMPLETED
  • Verified insurance eligibility and benefits; billed services using CPT coding and modifiers.
  • Resolved rejected and denied claims (A/R follow-up); posted payments after pulling EOBs from Availity and other payer portals.
  • Reached out to patients and providers regarding outstanding balances, and handled inbound provider calls on claim disputes.
  • Analyzed monthly collections reports; worked inside EHRyourway, Kareo/Tebra, and CollaborateMD.
Sr. Rep, Customer Service Operations (Voice) — Healthcare Accounts
Cardinal Health International Philippines
Feb 2021 – Dec 2022
COMPLETED
Customer Service Operations (Voice)
24/7 AI Philippines
Oct 2018 – Dec 2020
COMPLETED
Education — St. John Bosco Institute of Arts and Science
Associate Degree, Information Technology · June 2015 – May 2017

Systems & Portals

EHR / EMR Platforms

CollaborateMD Kareo / Tebra InSync AthenaOne / AthenaHealth Elation Zentake EHRyourway PromptEMR

Payer & Claims Portals

Availity UnitedHealthcare Provider Portal Waystar EDI Insight TriZetto Nevada Medicaid SilverSummit UMR Office Ally Noridian Medicare HPN Cigna

Payment Processing

Payspan Zelis Echo / Optumpay Authorize.net Stripe

Communication & Productivity Tools

HubSpot Asana Slack MS Teams RingCentral 3CX Google Voice Dialpad

Training & Compliance

Certified· Oct 2025

HIPAA Compliance Training

MedVirtual Academy · Patient data privacy & security
Certified· Oct 2025

Cybersecurity Training

MedVirtual Academy · Safe handling of protected health info

How I Work

01 — DETAIL

Accuracy under volume

Reconciling dozens of claims, appointments, and payments in a single spreadsheet without losing track of any one of them.

02 — FOLLOW-THROUGH

Nothing stays pending

Every denied or unpaid claim gets a next action — an appeal, a call, or a flag to the right person — until it's resolved.

03 — REPORTING

Status people understand

Turning claims data and payer activity into plain client updates, so nobody has to guess where things stand.

What Unworked Denials Cost

400
$150
Estimated denied claims / month (~10% industry average) 40
Denials that typically never get reworked (~60%) 24
Estimated revenue at risk per month $3,600

That's the money I chase down — every denial gets an appeal, a follow-up, or a next action until it's resolved.

Illustrative estimate based on commonly cited industry averages (denial rates of roughly 5–15%, with a majority of denials never reworked). Actual figures vary by specialty and payer mix — this isn't an audit of your practice.

Why Work With Me

The Philippines runs a large share of U.S. healthcare back-office work — insurance verification, claims, billing, and patient support — so specialists here typically already know U.S. payer systems, provider portals, and claims workflows before they ever start with a new client.

That's the environment I trained in. Pairing that with a lower cost of living means you get hands-on RCM work at $14/hr starting rate — the same offshore staffing advantage more U.S. practices are turning to, without the ramp-up time of someone learning U.S. healthcare billing from scratch.

$14/hr
Dedicated, detail-focused RCM support — a fraction of a U.S. in-house hire, with no benefits, overhead, or recruiting to manage.
01
Built for U.S. healthcare workflows

Trained on U.S. payer portals, EHR/EMR systems, and claims processes from day one — not a general VA background.

02
Real time zone overlap

Structured to overlap with U.S. business hours — not an overnight hand-off with a 12-hour reply gap.

03
Straightforward cost efficiency

A starting rate of $14/hr gets you dedicated, detail-focused RCM work without a full in-house hire.

U.S. TeamClaims Queue
PhilippinesRCM Support
Denial Follow-up
Eligibility Checks
Payment Posting
Time Zone Coverage
Mark — Philippine Time --:--
You — Your time --:--

◎ Tap a time zone to see it converted to Philippine time, live.

Comfortable working across all four continental U.S. time zones — my schedule shifts to match whichever one your practice runs on.

See It For Yourself

Don't just take my word for it — here's an outside look at why so many U.S. practices and businesses are building teams with Filipino professionals.

How We'll Work Together

Step 01

Discovery call

A quick conversation about your practice, current systems, and where claims or payments are getting stuck.

Step 02

Access & setup

Secure access to your EHR/EMR and payer portals, plus whichever communication tool you already use.

Step 03

Day-to-day workflow

Eligibility checks, claims, denials and appeals, and payment posting handled on a set daily or weekly rhythm.

Step 04

Clear reporting

Regular status updates so you always know what's resolved, what's pending, and what needs your input.

Payment & Invoicing

I invoice on whatever schedule we agree on — weekly or bi-weekly is typical — and accept payment through any of the methods below. Wise is my preferred option: for international transfers it generally comes with lower fees and a better exchange rate than PayPal, so more of what you send actually reaches me. Each option below is clickable — tap any card to open that provider's site in a new tab and check it out for yourself.

Preferred
W Wise

Wise

Best exchange rates and lowest fees for international transfers. My preferred method for regular invoicing.

Visit wise.com
P PayPal

PayPal

Widely used and convenient — fine for one-off or smaller payments, though fees and exchange rates run higher.

Visit paypal.com
R Remitly

Remitly

Available as an alternative, mainly suited to direct bank-to-bank transfers.

Visit remitly.com

Coming Soon

Not live yet

Beyond one-on-one work

Right now, when you work with me, you work directly with me — no account managers, no hand-offs. Down the road, I'm planning to build a small network of vetted medical billing VAs I trust, so clients who need to scale beyond one person have a referral option too.

That network doesn't exist yet, so I'm not going to pretend otherwise — but if it's something you'd want first access to once it's ready, mention it in the message below and I'll keep you posted.

Frequently Asked

Will you actually be available during my business hours?

Yes — my schedule is structured around U.S. business hours specifically for this kind of work. The live clock above shows the overlap in real time.

What tools do you use to communicate and share access?

Whatever you're already using — email, Slack, Zoom, or your practice management system's built-in messaging. I work inside your existing EHR/EMR and payer portals rather than asking you to adopt anything new.

How does billing and invoicing work?

We agree on a schedule — weekly or bi-weekly is typical — and I invoice based on hours worked or an agreed project rate, paid through whatever method works best for you.

Can you handle full-time, part-time, or short-term contract work?

Yes. I've done all three, and I'm happy to start smaller and scale up as we figure out what your practice actually needs.

What if my practice uses a system you haven't listed?

I've picked up new EHR/EMR platforms and payer portals on the job before — happy to adapt to whatever your practice already runs on.

Get In Touch

Let's talk about your claims.

Open to RCM and medical billing contract work, virtual assistant engagements, and full-time roles with U.S. healthcare providers and billing companies. Fill out the intake below and your message goes straight to me.

LinkedInlinkedin.com/in/mrkrnzmrn
RateStarting at $14 / hr
EngagementFull-time, part-time, or contract
Based inPhilippines · U.S. business hours
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