Nassau
Nassau is a payer organization. For an ASC, what matters isn't the logo. It's how Nassau pays: where it runs rich, where it runs thin, and how its reimbursement compares with peer plans for the same procedures.
Pilot Analysis
Get the complete Nassau analysis
Tell us where to send it. Our team will prepare an analysis of Nassau covering rates by code, market position, and underpaid areas, and email it to you within 5-10 business days. Need it faster? Book a demo.
What Insights reveals
How Nassau pays
See how Nassau reimburses across procedures and markets, benchmarked against the peer plans competing for the same cases. Not a raw rate sheet, a read on where it sits.
Geographic footprint
See where Nassau concentrates and how its presence shapes the markets you compete in.
Peer position
Put your own position next to the benchmark for Nassau and bring the gap to your next contract conversation.
Specialty mix
Understand which procedures and specialties drive Nassau's volume, so you know where a rate change moves the needle.
Whether you're an ASC benchmarking a contract or a provider team looking Nassau up, DataLily AI maps how it reimburses across procedures and markets, and where your own rates sit against the peer benchmark.
Reference
Working with Nassau
- Payer ID
- 10539 is the EDI identifier used to route electronic eligibility checks (270/271), claim-status inquiries (276/277), and claims to Nassau through a clearinghouse.
- Eligibility verification
- Coverage and benefits for Nassau members are verified before the date of service, through a clearinghouse using payer ID 10539or through the payer's provider portal.
- Prior authorization
- Requirements are set per plan and per procedure. Confirm whether an authorization is required with Nassau directly before the date of service.
Book a demo: pick a time
A 15-minute walkthrough of Nassau the way it pays.
- What is Nassau's payer ID?
- Nassau's electronic payer ID is 10539. ASC billing teams use it to route eligibility checks (270/271), claim-status inquiries (276/277), and electronic claims to Nassau through a clearinghouse.
- How do ASCs verify eligibility for Nassau members?
- Eligibility and benefits for Nassau members are verified before the date of service, either electronically through a clearinghouse (a 270/271 transaction using payer ID 10539) or through the payer's provider portal.
- Does Nassau require prior authorization for ASC procedures?
- Prior-authorization requirements for Nassau are set per plan and per procedure. Confirm whether an authorization is required with Nassau directly before the date of service.
- What type of payer is Nassau?
- Nassau is a payer organization.
- How does Nassau compare with other payers for ASC procedures?
- Ask Rose and you get a plain-language read on where Nassau pays above or below peer plans for your top procedures, charted, and ending in a recommendation you can take into a contract conversation.
- Is Nassau paying my ASC below market?
- Put your own Nassau contract next to the peer benchmark in DataLily AI and you'll see the gap by procedure and market, the fastest way to know whether you're leaving money on the table.