Do not send your CMS-460 form to CMS; send it to your MAC. If you send your forms to CMS, it will delay processing.
Open enrollment: it generally is from mid-November through December 31.
Newly enrolled: all new physicians, practitioners, and suppliers that are newly enrolled are automatically non-participating.
90 days: if you have already enrolled in the Medicare program, you have 90 days from when you are enrolled to decide if you want to participate.
Termination: if you decide not to participate and are currently a participant, write to each MAC.
Postmark: this written notice must be postmarked prior to the end of the current calendar year.
Deductible and coinsurance: the participant shall not collect more than the applicable deductible and coinsurance for covered services.
| Question | Answer |
|---|---|
| Form Name | Form CMS-460 |
| Form Length | 3 pages |
| Fillable? | Yes |
| Fillable fields | 12 |
| Avg. time to fill out | 2 min |
| Edition | 12/28 |
| Issuing agency | Centers for Medicare & Medicaid Services |
| Where to send | Your MAC, not CMS |
| Who signs | The participant (or authorized representative of participating organization) |
| Matches the agency's file | Yes, checked October 2, 2026 |
| Other names | CMS-460, CMS 460, CMS460, 460 form, Form CMS-460, Medicare 460, Medicare Participating Physician or Supplier Agreement |
| Official source | Form CMS-460 (Rev 12/28), Centers for Medicare & Medicaid Services |
Cms 460 Form isn’t the one you’re looking for?