Medical practice 1099 filing: Managing contractor clinicians without year-end chaos

It is January 22. The 1099 filing deadline is in nine days. Your office manager is scrambling to figure out which contractors need 1099s, digging through bank statements to reconstruct payment totals, and discovering that three locum physicians never submitted W-9 forms. One contractor's address has changed. Another was paid through two different accounts that need to be combined. Your billing service is on the list, but no one recorded their EIN when the contract was signed.

This scene is preventable. Every piece of information needed for 1099 filing exists at the time of the first payment. Practices that experience year-end chaos are not dealing with a filing problem. They are dealing with a data-collection problem that began 12 months earlier.

Who gets a 1099 from your medical practice?

The threshold is $600 or more in payments to an individual or non-corporate entity for services during the calendar year. Full requirements are on the IRS About Form 1099-NEC page.

Locum tenens physicians. If you pay a locum physician directly, they receive a 1099-NEC for payments of $600 or more. If you pay the staffing agency, the agency receives the 1099, not the individual physician. The filing obligation follows the payment, not the clinical relationship. For the classification rules that determine whether a locum is a contractor at all, the guide to physician contractor vs employee classification covers the IRS three-factor analysis.

Contractor clinicians and billing services. Nurse practitioners, physician assistants, therapists, or other clinicians engaged as independent contractors each receive a 1099-NEC. Billing and coding services organized as sole proprietorships, partnerships, or LLCs do too. If the billing company is an S-corp or C-corp, they are generally exempt, with one exception: payments to attorneys always require a 1099 regardless of corporate structure.

Other service providers and landlords. Any non-employee service provider who is not a corporation and is paid $600 or more receives a 1099-NEC. Rent payments of $600 or more to an individual or non-corporate landlord require a 1099-MISC. Vendors paid via credit card are reported on a 1099-K by the payment processor, not by your practice.

The W-9 is everything, and it must be collected at onboarding

The W-9 provides the contractor's legal name, business name, tax classification, and taxpayer identification number. Without a completed W-9, you cannot file an accurate 1099.

Collect the W-9 before the first payment. Make it a non-negotiable step in contractor onboarding. No W-9, no payment. This is the single practice that eliminates the January scramble of chasing contractors who have moved, changed contact information, or simply do not respond during tax season.

Verify the TIN before filing using the IRS TIN Matching Program. A mismatch triggers a B-notice and potentially backup withholding at 24%. Store W-9s centrally in a shared drive or accounting software vendor records. The office manager who needs the W-9 in January should not be digging through March email threads.

Building the system that eliminates year-end reconstruction

Year-end 1099 chaos is a symptom of disorganized vendor management throughout the year. Five practices prevent it.

1. Maintain a vendor master list. Track every contractor and vendor relationship with: legal name, business name, address, TIN, tax classification, W-9 on file (yes/no), and payment method. Update it whenever a new contractor is engaged.

2. Flag 1099-eligible vendors at setup. When adding a new vendor to your accounting system, mark them as 1099-eligible based on their W-9 tax classification. Most accounting platforms (QuickBooks, Xero, Sage) have a 1099 tracking flag that automatically accumulates payments for flagged vendors throughout the year. If this flag is set at onboarding, the year-end 1099 report generates from your accounting data with no reconstruction required.

3. Code every contractor payment to the correct vendor account, not to a generic "Locum Coverage" expense line. If payments are coded to generic accounts, the system cannot generate accurate per-vendor totals. When coding errors are found, the adjusting journal entries guide covers how to reclassify them.

4. Reconcile vendor totals quarterly as part of your standard month-end close process. Verify every active contractor has a W-9, confirm payment totals, and flag any missing vendors. Quarterly reconciliation catches problems early; annual reconciliation discovers them a week before the deadline.

5. Verify addresses in November. Outdated addresses create compliance issues for both parties and are a common source of B-notices.

Filing deadlines and penalties

1099-NEC deadline: January 31 for both recipient and IRS copies, paper or electronic. No automatic extension. For 1099-MISC: January 31 to recipients, February 28 (paper) or March 31 (electronic) to IRS. Strong payroll compliance habits throughout the year produce the clean contractor data that makes these deadlines straightforward.

Penalties escalate with delay: $60 per form if filed within 30 days of the deadline; $120 per form between 30 days and August 1; $310 per form after August 1 or not filed at all. For a practice with 15 contractors, missing the deadline costs at least $900 and up to $4,650 before intentional-disregard penalties of $630 per form with no cap.

Backup withholding risk. Without a valid W-9, you must withhold 24% of all contractor payments and remit to the IRS. Failure to implement backup withholding makes the practice liable for the tax plus penalties.

The locum-specific 1099 complications

Agency versus direct engagement. When you pay a staffing agency for locum coverage, the agency receives the 1099, not the physician. When you pay the physician directly, the physician receives it. If you engaged a locum through an agency for six months and then directly for four months, you issue a 1099 to the physician for the direct-pay period only, and a separate 1099 to the agency for the agency-billed period.

Travel and housing reimbursements to a locum are generally included in the 1099 total. Unlike employee reimbursements under an accountable plan, contractor reimbursements are taxable income and must be reported in full.

Start in January, not in January of next year

1099 filing is not complex. What makes it chaotic is waiting until the deadline to gather information that should have been collected at the first payment. Contractor payments and their 1099 treatment also feed the practice's broader tax planning; the guide to medical practice tax deductions covers how these connect.

Frequently asked questions

What happens if a contractor refuses to provide a W-9?

Backup withholding applies immediately: withhold 24% of every payment and remit to the IRS using Form 945. The safest approach is a no W-9, no payment policy implemented before the first invoice. If payments have already been made without a W-9 and the contractor will not provide one, consult a CPA about your withholding obligations for those payments.

Does a medical practice need to file 1099s electronically?

Yes, if you file 10 or more information returns in a calendar year. The IRS lowered the threshold from 250 to 10 forms effective for returns filed in 2024 and later. Practices above that threshold must file through the IRS FIRE system or an approved third-party provider. E-filing also extends the IRS filing deadline for 1099-MISC to March 31 versus February 28 for paper; the January 31 recipient deadline is unchanged for both.

How do you correct a 1099 after it has already been filed?

File a corrected form as soon as the error is discovered. Check the "Corrected" box, enter the correct information, and send the corrected copy to the recipient and the IRS (or submit electronically through the same system used for the original). The same penalty structure applies to incorrect filings as to late ones, so prompt correction reduces exposure.