What this validator actually checks
The validator confirms a Medicare card number is well-formed against the official Services Australia / Digital Health Agency check-digit algorithm — it does not confirm the card is currently active. Three rules apply: the number must be exactly 10 digits, the first digit must fall in the published range (2–6), and the 9th digit (the check digit) must equal the sum of the first 8 digits multiplied by the weights [1, 3, 7, 9, 1, 3, 7, 9], modulo 10. A failed check almost always means a typo on the part of the user, not a problem with the card.
For active-card verification — whether a card is current, whether the holder is eligible for a specific Medicare benefit — the only authoritative source is Services Australia (or, for health professionals, the HPOS patient-details lookup).
The anatomy of an Australian Medicare card number
The number printed across the top of an Australian Medicare card is 10 digits long and is laid out as four groups:
The first 8 digits identify the household account, the 9th is a check digit, and the 10th is the card-issue number (which changes each time Services Australia replaces a household's card — for example after a card is lost or expires). The single digit shown after a slash beside each family member's name on the front of the card is the Individual Reference Number (IRN); it identifies which family member on the card the entry refers to, but is not part of the 10-digit Medicare card number and is not validated by this tool.
Most online forms — including NewDoc's booking flow — accept the 10-digit Medicare card number with or without separators. Spaces, dashes, and full stops are stripped automatically.
When you might want to check the format
The most common reason patients land on a Medicare validator is to rule out a typo before resubmitting a form that rejected their card number. Most Medicare-aware online forms run the same check-digit algorithm; a number that fails this validator will also fail at the booking step. Catching the typo here saves a round-trip.
Other common reasons:
- Copying a Medicare number from a paper card to an online claim form and wanting to confirm it's been transcribed correctly.
- Confirming the leading digit is in the published 2–6 range (a common typo involves reading the leading 5 as a 2 or vice versa on faded cards).
- Software developers integrating Medicare card capture and wanting a sanity check before submitting to a backend.
If the number fails the format check, double-check each digit against the card. If the format check passes but a third-party system still rejects the number, that's almost always an active-card problem — not a format problem — and Services Australia is the right next step.
Privacy — the validator never sends your number anywhere
The validator runs entirely in your browser. No card number is logged, transmitted to NewDoc, or shared with any third party. The page itself uses the same anonymous Vercel Analytics that the rest of newdoc.com.au uses, but the form contents are not part of any analytics payload.
Frequently asked questions
Is this Medicare number validator free?
Yes. The validator is free and runs entirely in your browser. NewDoc does not collect, transmit, or store the number you enter — it never leaves your device.
Does a 'valid format' result mean my Medicare card is active?
No. The validator checks the 10-digit format and the official check-digit algorithm only. It cannot confirm whether the card is currently active, whether the holder is eligible for Medicare benefits, or whether the card has expired. For active-card verification or eligibility checks, contact Services Australia directly.
What's the difference between the Medicare card number and the IRN?
Australian Medicare cards display a 10-digit Medicare card number alongside a 1-digit IRN (Individual Reference Number) printed beside each family member's name. The 10-digit number identifies the household account; the 1-digit IRN identifies which family member on the card the entry refers to. The validator here checks the 10-digit Medicare card number — not the IRN.
Why does the first digit of the Medicare number have to be 2-6?
Services Australia issues Medicare card numbers in number ranges. The current ranges start with 2, 3, 4, 5, or 6. A leading digit outside that range indicates either a typo or a card number that wasn't issued by Services Australia. This is documented in the Digital Health Agency's Software Conformance Profile, which is the official reference for Medicare-aware software.
How is the Medicare check digit calculated?
The 9th digit of a 10-digit Medicare card number is a check digit calculated from the first 8 digits using weights [1, 3, 7, 9, 1, 3, 7, 9]: multiply each base digit by its weight, sum the products, and take the result modulo 10. The resulting single digit must equal the 9th digit of the card number. The 10th digit is the card-issue number printed on the card itself.
I lost my Medicare card — can NewDoc help me find my number?
If you have a Medicare online account through myGov, your Medicare card number is shown there. If you cannot access myGov, Services Australia can issue a replacement card and provide your number — visit servicesaustralia.gov.au or call 132 011. NewDoc cannot retrieve or confirm your Medicare card number on your behalf.
Can I use NewDoc telehealth without my Medicare card?
Medicare cardholders can be bulk billed for a NewDoc telehealth consultation at no out-of-pocket cost. If you don't have your card number to hand, you can usually retrieve it via your myGov account or by calling Services Australia. Patients without Medicare eligibility can still book a NewDoc consultation as a private patient.
Need to actually use your Medicare card?
Once you have a confirmed Medicare card number, you can book a bulk billed telehealth GP consultation at no out-of-pocket cost. The consultation, any eScripts, medical certificates, and specialist referrals issued during the consult are included for eligible Medicare cardholders.
References
- Your Medicare card, Services Australia
- Medicare online account help — Get your own Medicare card and number, Services Australia
- Software Conformance Profile (Appendix E — Medicare card number check algorithm), Australian Digital Health Agency
- Patient details lookup in HPOS (Health Professionals Online Services), Services Australia
This content is informational and does not replace individual medical advice. For personal assessment, book a consultation with your GP. In emergencies, call 000.
Last reviewed 2026-05-15.