Master Billing LLC
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About Master Billing LLC

The team behind
your practice's
revenue engine.

Master Billing LLC was co-founded by dermatologists and RCM operators with deep roots in corporate finance, enterprise healthcare, and global billing operations — who saw firsthand what dermatology practices were leaving on the table and built the infrastructure to fix it.

Company Founded
2022
Co-founded by dermatologists
Revenue Processed
$180M+
For dermatology practices
Combined Leadership Experience
28+ yrs
Derm-focused RCM
“We built Master Billing because dermatology practices deserve a billing partner that understands their work as well as they do.”
— Rohan Doodnauth, Partner & Advisor

Most billing vendors serve dozens of specialties and spread their expertise thin. Master Billing was built differently — co-founded by dermatologists who understood the billing complexity of their own specialty and built the infrastructure to solve it.

Every workflow, every coder, and every payer rule is optimized for dermatology from day one. We operate as a true extension of your practice — not a vendor you manage, but a partner invested in your long-term revenue health.

Leadership

Built by RCM operators
who specialize in derm.

Co-founded by dermatologists, Master Billing was built differently — our entire operation is structured around the billing complexity unique to dermatology practices: Mohs coding, Q-code compliance, SRT reimbursement, and Medicare audit risk.

Our leadership team brings 28+ combined years of dermatology-focused RCM experience. That’s why dermatologists trust us with their most complex reimbursement challenges — not just their routine claims.

Rohan Doodnauth
Rohan Doodnauth
Partner & Advisor

Rohan brings a rare combination of enterprise finance, cloud SaaS, and healthcare RCM expertise to Master Billing. A UCF finance graduate, he spent 12+ years leading revenue operations across corporate finance, defense, and cloud infrastructure sectors before focusing on dermatology billing.

His work spans M&A advisory, go-to-market strategy, and revenue growth leadership — giving Master Billing a strategic edge in understanding how dermatology practices scale and what billing infrastructure needs to look like at every stage of growth.

12 Yrs Experience
Ajith Kumar Purushothaman
Ajith Kumar Purushothaman
VP RCM Operations

Ajith is the operational engine of Master Billing — the person who redesigns denial workflows and makes them permanent. With 20+ years in healthcare RCM and AR management spanning large hospital systems, multi-specialty groups, and private practices, he brings a depth of process expertise that generic billing vendors simply cannot match.

He leads Master Billing’s global operations across US and India teams, ensuring every claim is coded by AAPC/AHIMA-certified dermatology specialists and every denial is worked with systematic discipline.

20+ Yrs Experience
How We Work

What makes us
different.

🎯

Derm-Only Focus

We don’t serve 30 specialties. Every coder, every workflow, every payer rule is built exclusively for dermatology. No generalists touching your claims.

📊

Proactive, Not Reactive

We audit your claims before payers do. Monthly charge audits, denial pattern analysis, and proactive LCD monitoring mean we catch problems before they become recoupment demands.

🔓

Audit Defense Built In

Every claim we submit is coded to withstand RAC and UPIC scrutiny. Audit defense isn’t an add-on — it’s built into our standard process from day one.

🔗

EHR-Native Integration

We work inside EzDerm, ModMed, AdvancedMD, Nextech, and DrChrono. No migration, no disruption, no learning curve for your staff.

🌐

Global Operations

Dual operations across Florida and Hyderabad, India — giving you 24-hour billing coverage without the overhead of an in-house team.

👥

True Partnership

We don’t disappear after onboarding. Monthly performance reviews, dedicated account management, and direct access to leadership mean you’re always in the loop.

EHR Compatibility EzDerm ModMed AdvancedMD Nextech DrChrono
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Revenue Diagnostic

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📋
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