Who Needs an Invitation Letter — and Who Doesn’t

Most international patients traveling to China for scheduled treatment will need some form of hospital-issued documentation to support their visa application. That typically means an invitation letter, a medical appointment confirmation, or a treatment plan summary from the hospital’s international department. For the S2 visa, which is the correct category for medical treatment in China, consulates generally expect supporting documents that show a genuine medical purpose.

Who should pursue this:

• Patients with a confirmed diagnosis and a specific hospital or department in mind
• Those who have already completed a remote consultation or written second opinion with a Chinese hospital
• Patients traveling with family members who also need visa support letters
• Anyone whose home country requires a formal invitation for a private medical visa application

Who should not rush into this:

• Patients still comparing hospitals across multiple countries — an invitation letter commits you to a specific institution’s process
• Those without a confirmed diagnosis or medical records in order
• Patients seeking emergency care — invitation letters take days to issue, and emergency travel follows different rules
• Anyone who received an unsolicited invitation letter from a hospital they never contacted

That last point deserves emphasis. Hospitals in China do not send unsolicited invitations to foreign patients. If you did not initiate contact, the letter is almost certainly fraudulent.

How to Tell If an Invitation Letter Is Genuine: The Verification Checklist

Here is the process our team uses when patients forward us documents for review. It takes about fifteen minutes and requires no special expertise.

Check the Seal and Issuing Office

A genuine Chinese hospital invitation letter carries a red circular seal, usually from the hospital’s international medical center or foreign affairs office. The seal should be crisp, circular, and contain the hospital’s full Chinese name around the rim with a star in the center. Photocopied or scanned seals often appear blurry or pink rather than red. But do not rely on color alone. Some hospitals issue digital letters with electronic verification codes instead of physical seals. The key question is whether the issuing office named on the letter actually exists. Call the hospital’s main switchboard — found through an independent search, not the letterhead — and ask for that office by name.

Verify the Contact Details Independently

This is the single most effective test. Do not call the phone number printed on the letter. Do not reply to the email address in the signature block. Instead, find the hospital’s official website through a search engine, locate their international department page, and call or email them directly. Ask one simple question: “Did your office issue an invitation letter to [your name] on [the date stated]?” Legitimate offices keep records. Fraudsters do not.

Look for Specific Patient and Visa Information

Real invitation letters include your full legal name exactly as it appears in your passport, your passport number, your date of birth, and often a stated purpose of visit. For medical travel, the letter should reference medical treatment or a specific department. A vague letter addressed to “Dear Patient” or one that omits your passport details is a red flag. The letter should also state the correct visa category. For medical treatment in China, that is S2, not M. An invitation letter that tells you to apply for an M visa is either written by someone who does not understand Chinese visa categories or is deliberately misleading.

The Options, Compared

Not all invitation letters are created equal. Here is what actually exists in the Chinese medical system, and how they differ.

The last row is where most scams live. Third-party agencies can coordinate your case and help you obtain a legitimate hospital letter, but any document an agency issues in its own name has no visa value. The consulate wants to see a letter from the hospital, not from a middleman. If you are working with an agency, ask them directly: “Will the letter come from the hospital’s official domain, or from your company?” If the answer is the latter, walk away.

For most patients, the practical path is to establish a relationship with the hospital first — through a remote consultation or written second opinion — and then request the invitation letter as a registered patient. That sequence also protects you from paying for a letter that never materializes.

What a Genuine Letter Cannot Promise

Even a perfectly authentic invitation letter has limits, and understanding these limits helps you spot fakes. A real letter does not guarantee visa approval. It does not guarantee a specific surgery date. It does not guarantee admission to a particular ward or a specific doctor’s schedule. It simply confirms that the hospital has reviewed your case and is willing to receive you as a patient.

Fraudulent letters often overpromise. They might state that your surgery is “confirmed for March 15” or that “visa approval is guaranteed.” Public hospitals in China generally cannot lock in a surgery date before you have completed an in-person consultation. The system does not work that way. If a letter makes promises that sound too convenient, that is a signal to verify everything else more carefully.

Also, a genuine invitation letter from a top-tier hospital like Peking Union Medical College Hospital or Fuwai Hospital will reference their official international patient pathway. You can cross-check that pathway on the hospital’s website. If the letter describes a process that does not appear anywhere on the hospital’s official pages, treat it with suspicion.

What It Costs and How Long It Takes

Time is usually the bigger constraint than money. Here is a realistic timeline for a patient who needs a genuine invitation letter for medical travel to China.

First, you need medical records in order. That means translated discharge summaries, imaging reports, and pathology results. Translation can take 3–7 days depending on volume. Next, you submit these for a remote consultation or written second opinion. A standard international department video consultation costs $100–300. A written second opinion from a top specialist runs $300–500. The hospital reviews your case and, if they accept you as a patient, issues the invitation letter. That step typically takes 3–10 business days after the consultation is completed.

So the full timeline from first contact to holding a genuine letter is usually two to four weeks. Anyone offering you a letter in 48 hours is cutting corners — or fabricating documents.

Cost of the letter itself? At most legitimate hospitals, the invitation letter is free once you are a registered patient. Some private international hospitals bundle it into an administrative fee of $50–150. No legitimate hospital charges $500 or $1,000 for a letter. If you are being asked for large sums just to receive an invitation, you are dealing with a broker, not a hospital.

Practical Considerations: Documentation, Visas, and Follow-Up

Beyond the letter itself, several practical matters affect whether your medical travel plan actually works.

Your passport must be valid for at least six months beyond your intended stay. The invitation letter must match your passport name exactly — middle names, hyphens, and spacing all count. A mismatch between your passport and the letter can cause a visa rejection even when the letter is genuine.

For the visa application, you will generally apply for an S2 visa, stating medical treatment as your purpose. The invitation letter is one supporting document among several. You will also need your passport, a completed application form, a recent photo, and sometimes proof of funds or a travel itinerary. Consulates process S2 applications at different speeds. Budget two to four weeks for the visa, separate from the time needed to obtain the letter.

Insurance is another layer. Most international health insurance plans do not cover elective treatment in China unless you have a specific rider or a medical tourism policy. Check before you travel. Chinese public hospitals generally require prepayment or a deposit before major procedures, and you will need a payment method that works in China — international credit cards are accepted at many hospital international departments, but daily spending often requires cash or a local payment app.

Language is the final practical hurdle. Top-tier Chinese hospitals treat thousands of patients daily. Even in international departments, not every staff member speaks fluent English. A bilingual medical companion can handle registration, queueing, payment, and translation during your hospital visits. Some patients manage alone. Most find the language barrier more exhausting than expected.

Frequently Asked Questions