Who Offers the Top Outsourcing Services Now That MD On-Line Is Part of Inovalon?

MD On-Line, often shortened to MDOL, was an EDI company that connected physician practices to insurance payers for claims submission and related electronic transactions. For small practices in the 2000s and early 2010s, an MD On-Line account was often the entire billing connectivity stack: claims went out through it, and eligibility answers came back through it.

In October 2014, ABILITY Network, a healthcare information technology company known for its payer connectivity tools, agreed to acquire MD On-Line, and MDOL’s products and customers moved into the ABILITY portfolio. In April 2018, Inovalon completed its acquisition of ABILITY Network for $1.2 billion, and the ABILITY product family moved under Inovalon. Today the lineage lives in Inovalon’s provider solutions, including Claims Management Pro and Claims Management Medicare Pro, and ABILITY’s old web address now presents Inovalon provider products.

So the honest answer to “where did MD On-Line go” is: through two acquisitions, into Inovalon. The name is retired; the work it handled, claims, eligibility, and payer connectivity for practices, continues under Inovalon product names, and plenty of former MDOL practices have also since moved to other clearinghouses entirely.

Whether your eligibility answers come from an Inovalon tool, your PM’s built-in connection, or individual payer portals, our specialists verify coverage before the visit and enter plan detail cleanly into your system. Benefits questions that need a phone call get the phone call. The point is simple: no patient reaches the front desk with unverified coverage, which is where a large share of small-practice denials are born.

The ABILITY side of this lineage was known for its Medicare connectivity, and Inovalon still sells a dedicated Medicare claims product. Our teams work that side of the house on a schedule: Medicare claim status follow-up, correction and resubmission cycles, MBI lookups when identifiers fail, and structured aging follow-up on Medicare AR so balances move instead of sitting in a bucket labeled later.

Denials get triaged by reason code and routed to the right fix: correct and resubmit, gather records, or build an appeal packet for your provider’s sign-off. We track each denial to closure and report recurring causes back to the practice, so the pattern gets fixed upstream instead of refunded to the payer through write-offs. This is the queue that small practices most often concede, and the one where a dedicated owner changes the math fastest.

HIPAA-trained staff. Business Associate Agreements executed with each client. Workflows designed to support HIPAA compliance, with SOC 2 Type II attestation, ISO 27001:2022, $5M E&O and cyber liability coverage, and named individual credentials with full audit logs. Read the program in detail at HIPAA and Security at Staffingly.