Dr. Kriangkrai Thantavivattana

Dr. Kriangkrai Thantavivattana (Thai: นพ.เกรียงไกร ทันตวิวัฒนา) joined Yanhee International Hospital in Bangkok as a plastic surgeon in 2023, the start date given on his English-language hospital profile. Yanhee places him in ศูนย์ศัลยกรรมตกแต่ง, its Plastic Surgery Center, part of the hospital in Bang Phlat district, and records Thai and English as his languages. Before Yanhee, his published career ran through Siriraj Hospital, Nan Hospital and a private clinic, all set out in the experience section below.

All of his published training took place in Thailand. He studied medicine at Mahidol University's Siriraj Hospital, completed specialty training in plastic surgery there between 2014 and 2019, and was awarded his Thai board qualification in plastic surgery, the วุฒิบัตร, in 2020. On the membership side, his name is in the public directory of Thailand's plastic surgery society, ThPRS (Society of Plastic and Reconstructive Surgeons of Thailand). Separately, his record comes up when the Royal College of Surgeons of Thailand (RCST) member database is searched.

Yanhee connects him with operations on the face, the breast and the body. His Thai profile has a list headed ประสบการณ์ในการรักษา (treatment experience), which names double eyelid (upper eyelid) surgery, surgery for lower eyelid bags, nose augmentation, facelift, chin augmentation, facial fat injection, breast augmentation, tummy tuck, liposuction, FTM mastectomy and scar revision. Separately, Yanhee's English procedure pages include him under ‘Available doctors’ for eyelid surgery, facelift and neck lift, thigh lift and breast reconstruction. The practice-areas section below takes these one at a time.

Our sources for this profile are limited to Yanhee's official websites in English and Thai plus the ThPRS and RCST registers, all checked on 27 September 2026; the steps we follow are set out in our research methodology. To arrange an appointment with this surgeon, request a consultation with Dr. Kriangkrai. Yanhee manages his diary, so our patient team relays your request to Yanhee's staff and then contacts you with a proposed date; until you receive it, nothing is booked.

Yanhee's English and Thai profiles trace Dr. Kriangkrai's education through Mahidol University and Siriraj Hospital in Bangkok:

• Medical degree. Mahidol University awarded his Doctor of Medicine (แพทยศาสตรบัณฑิต); the English profile names the school as Siriraj Hospital, Mahidol University. On the year, his two profiles conflict: 2011 in English, and in Thai the Buddhist-era year 2555, which is 2012. Because we cannot tell which is correct, this page shows no graduation year.
• Nan Hospital, 2011–2014. The English profile lists this period at Nan Hospital and calls it a general surgery internship.
• Plastic surgery residency, 2014–2019. Specialty training in plastic surgery, undertaken at Mahidol University's Siriraj Hospital.
• Board certificate in plastic surgery, 2020. The Thai profile records a วุฒิบัตร, or specialist certificate, in plastic surgery (the field is written สาขาศัลยศาสตร์ตกแต่ง) from Siriraj Hospital (ศิริราชพยาบาล), dated 2563 in the Thai calendar, which is 2020. This certificate is Thailand's specialist qualification, granted once residency has been completed.
• Cadaveric workshops, 2019. The English profile lists a Filler & Toxin Cadaveric Workshop at Chulalongkorn Hospital (written on the page as ‘Chula Hospital’) and a Breast Aesthetics & Reconstructive Cadaveric Workshop, which he attended at Chula Hospital and again at Siriraj Hospital. Cadaveric workshops are short, practical anatomy courses. The breast courses fit with the breast work on his profile; nothing on his profile says that he offers filler or toxin injections at Yanhee.

Professional bodies. His ThPRS directory entry, added in March 2024, gives Yanhee Hospital as his address. In the RCST member search he appears as a specialist member (แพทย์เฉพาะทาง), number 3730. His Thai profile, but not the English one, adds a third body, Thailand's Society of Aesthetic Plastic Surgeons (ThSAPS). That society keeps no current public member list, and the old ThSAPS online directory, whose last archived copy dates from 2020 (before his board certificate), does not include him, so the membership is stated by Yanhee but not independently verified by us. The Medical Council of Thailand appears too, under the ‘Credentials’ heading of the English profile.

Licence check. The Medical Council of Thailand offers an online register (checkmd.tmc.or.th), but our attempt to search it for Dr. Kriangkrai on 27 September 2026 was blocked. Neither Yanhee profile nor his ThPRS entry shows a licence number, so this page records none. Before committing to surgery, try the register yourself or request his licence details from Yanhee.

Spelling of his name. Yanhee's English pages write the surname as Thantavivattana, while Tantavivattana is the form used in the RCST register and at the top of his Thai profile. Both spellings belong to the same surgeon, นพ.เกรียงไกร ทันตวิวัฒนา.

Yanhee's English profile sets out his posts year by year, and we list them here as published:

• 2011–2014: Nan Hospital, described as a general surgery internship.
• 2014–2019: resident in plastic surgery, Siriraj Hospital, Mahidol University.
• 2019–2023: plastic surgeon, Nan Hospital.
• 2021–2023: plastic surgeon, Dr. Champ Clinic (the profile gives no location for the clinic).
• 2023 onwards: plastic surgeon, Yanhee International Hospital, Bangkok.

From 2021 to 2023 he held the Nan Hospital and Dr. Champ Clinic posts at the same time, and both ended in 2023. He no longer practises at either, and consultations arranged through our patient team take place at Yanhee only.

His name appears on Yanhee's listing of plastic surgery doctors. According to Yanhee, all 18 board-certified plastic surgeons on its team belong to ThPRS; in his case we confirmed the ThPRS entry directly, as noted above. Two further Yanhee pages show his involvement beyond clinic appointments. The English page on Renuvion J-Plasma skin tightening credits him as its medical reviewer (the page was last updated on 4 August 2026), although he is not among the doctors that page lists as offering the treatment. And an undated Thai-language news item on Yanhee's work with the Pavena Foundation names him as the plastic surgeon who received a woman injured in an acid attack and assessed her so that her treatment could be planned.

Neither profile gives the number of operations he has done, figures for individual procedures, or any academic or teaching appointment. Ask him in person how often he performs the operation you want; any surgeon should be willing to answer that.

Each procedure below is tied to Dr. Kriangkrai by an official Yanhee page: in one of two ways: the operation is named on the treatment-experience list in his Thai profile, or his name is under ‘Available doctors’ on the matching Yanhee procedure page in English. The general information that follows each one comes from our own procedure guides and does not describe how he operates. Only he can decide, after examining you, which operation to offer and whether it is suitable for you.

Eyelid surgery: double eyelid, upper and lower blepharoplasty. On his Thai profile, ศัลยกรรมตาสองชั้น carries the English label upper blepharoplasty and sits next to ศัลยกรรมถุงใต้ตา, lower blepharoplasty for under-eye bags. He is also one of the surgeons under ‘Available doctors’ on Yanhee's English eyelid surgery page. Because the Thai term means ‘double eyelid’ surgery, the listing spans two requests that are easily confused: forming a new upper lid crease, and removing hooded upper lid skin. General points from our guides: the upper lid scar normally lies hidden in the crease; a crease can be created by an open incision or, in lids that suit it, by buried sutures, which tend to be less durable; and lower lid bags are treated through a cut beneath the lash line or through the inner surface of the lid. If the lid edge itself sits too low (ptosis), the lifting muscle has to be tightened, which is a different operation, and a heavy brow can look like excess lid skin, so ask him to check for both. Read more in our guides to blepharoplasty, upper eyelid surgery, double eyelid surgery and lower eyelid surgery. Our guides put the usual stay for international patients at 5–7 days, which normally covers stitch removal.

Rhinoplasty and nose augmentation. เสริมจมูก, literally ‘nose augmentation’, is translated on his profile as rhinoplasty. In the augmentation surgery covered by our Asian rhinoplasty guide, a low bridge is raised, or a flat tip projected further, with either an implant (silicone and ePTFE are the usual options) or cartilage harvested from your own septum, ear or rib. Implants and cartilage differ in how they feel, how often they become infected and how well they last, and the right choice depends on your nose and your history. Nothing on his profile shows which material he prefers or whether he also does reduction or revision rhinoplasty, so ask him directly if either matters to you. Our general rhinoplasty guide covers the external splint and explains why swelling at the tip may take 12 months or longer to settle fully; international patients typically plan 7–10 days in Thailand.

Facelift and neck lift. Face lift (ผ่าตัดดึงหน้า) is on his Thai list, and on Yanhee's English facelift page he appears under ‘Available doctors’ for facelift and neck lift surgery. In general terms, a facelift lifts descended tissue of the lower face and jawline back into position and trims surplus skin; it leaves the brows, the eyelids and fine skin-surface lines as they are, so those need separate treatment. Options range from a limited mini lift to SMAS and deep plane techniques, and a neck lift is frequently done at the same sitting. Which of these he favours is not published. According to our facelift guide, a haematoma, meaning blood collecting beneath the lifted skin, is the commonest significant complication, and that smokers are more prone to problems with skin healing, which is why stopping nicotine matters. Allow roughly 10–14 days in Thailand, the usual range for international facelift patients.

Chin augmentation and fat grafting to the face. Both เสริมคาง (chin augmentation) and ฉีดไขมันใบหน้า (fat injection to the face, shown on the page as lipofilling) appear on his Thai list. Chin augmentation is often done with an implant, and international patients commonly allow 5–7 days in Thailand. In fat grafting to the face, fat collected by liposuction from elsewhere on your body is injected where the face has hollowed. Not all of the grafted fat survives in its new place, so some of the early fullness fades and a second session is sometimes planned. At the consultation, ask which chin implant he uses and whether your face is better suited to an implant, to fat, or to neither.

Breast augmentation. เสริมหน้าอก appears on his Thai list, and his 2019 cadaveric workshops in breast aesthetics and reconstruction, at Chulalongkorn and at Siriraj, relate to the same area. Yanhee's English breast reconstruction page also names him under ‘Available doctors’; we have not yet published a breast reconstruction guide. Our breast augmentation guide sets out the decisions you will make with him: silicone or saline fill; a round or anatomical (teardrop) shape; the shell surface, smooth or textured, where the choice matters because certain textured implants are linked to more cases of BIA-ALCL, an uncommon lymphoma; access through the breast fold, the edge of the areola or the armpit; and placement over the muscle or partly beneath it. Implants do not last a lifetime and may need replacing at some point, and an implant by itself does not correct a low-lying nipple. A typical stay for international patients is 7–10 days. Before you fly home, make sure Yanhee has given you the implant card, which records the maker, size, type and lot numbers, and file it with your medical records.

Tummy tuck, liposuction and thigh lift. His Thai profile lists ตัดไขมันยกกระชับหน้าท้อง (tummy tuck) and ดูดไขมัน (liposuction), and on Yanhee's English thigh lift page he appears under ‘Available doctors’. All three reshape the body; none of them is a treatment for obesity or a substitute for weight loss. In a tummy tuck, loose skin and fat beneath the navel are cut away and, in most cases, abdominal muscles that have drifted apart after pregnancy (diastasis recti) are stitched back together. Blood clots are among the risks our guide lists for it, and the typical stay in Thailand for patients from abroad is 12–14 days. Liposuction takes fat from selected areas, with the amount limited by what the surgeon judges safe for your weight and general health; a stay of 7–10 days is usual. A thigh lift tightens loose skin on the thighs, with a usual stay of 10–14 days in Thailand. If you want to combine any of these, ask him whether he would stage them over more than one operation or do them together, and what he does to lower the chance of a clot before a long flight.

FTM mastectomy (top surgery). ตัดหน้าอก, labelled FTM mastectomy, is on his Thai list. Yanhee handles gender-affirming surgery through a separate Pride Center, whose page outlines female-to-male surgery in stages that start with mastectomy (chest masculinization). He is not named on that centre's team page, so if you would like Dr. Kriangkrai himself to do your chest surgery, mention him in your consultation request; before anything is confirmed, we ask Yanhee whether he can accept the case. Our top surgery guide describes the main techniques in general terms: double incision with free nipple grafts, the most common approach for medium and larger chests; periareolar surgery for smaller chests whose skin is still elastic; and keyhole surgery for very small, firm chests. His own choice of technique is not published. Under WPATH SOC-8, the standards many surgeons work to, you do not have to have taken hormones before chest masculinization; an assessment is still usually required, so check with him and Yanhee which documents they need. International patients commonly allow 10–14 days, which gives time for drain removal and a check of the nipple grafts before flying.

Scar revision. The last item on his Thai list is ศัลยกรรมแก้ไขแผลเป็น, scar revision surgery, and the Pavena Foundation news item described above shows him assessing a patient with acid-attack injuries. We have no dedicated scar revision guide yet. Whether an operation will help a scar, and when it should be done, depends on what caused the scar, where it sits and how mature it is, so sharp close-up photos and a short history of the scar are the most useful things to send.

The first meeting is Dr. Kriangkrai's chance to examine you and judge whether surgery makes sense for you, and yours to put specific questions to him. Any plan drawn up from photos alone, whether by him or by a Yanhee coordinator, should be treated as a draft until that in-person examination at Yanhee has taken place.

Questions for any procedure with him - Will any part of my operation be done by another surgeon, and who makes up the theatre team? - Would I have general anaesthesia or sedation, and which anaesthetist will be responsible for me? - In a typical year, how many times do you perform this particular operation? His Yanhee profiles publish no numbers, so this has to be asked in person. - What does the Yanhee package cover? According to the hospital, most cosmetic packages cover the surgeon's fee, medication, the hospital room, nursing care, meals and operating theatre charges. Get a written quote that shows exactly what it covers and what it leaves out, and how a revision would be charged. - Will I need to stay overnight, for how many nights, and from what point is it safe for me to fly? - How will aftercare work once I am back home? Yanhee says it follows up by email, with you sending photos for the doctor to review. Who should I contact, and how, if something seems wrong?

Questions specific to his documented procedures - Eyelids: Do I need a new crease, removal of hooded skin, or both? Open incision or buried sutures: which do you recommend, and which gives the more lasting result for my lids? Is there any ptosis, or is my brow sitting low? If my eyes are prone to dryness, what precautions will you take? - Nose: Do you advise an implant for me, or grafts of my own cartilage, and if cartilage, from which donor site? Can you also refine the tip or narrow the nostrils? Do you perform revision rhinoplasty? - Facelift and neck lift: Which technique do you use (mini, SMAS or deep plane), and why for my face? Where will the scars lie? Will I have drains, and when are the stitches removed? - Chin and facial fat grafting: Implant or fat, which implant type, and how much of the grafted fat do you expect to last? - Breast augmentation: What implant (maker, surface, shape, volume) would you choose for me, which incision would you use, and would it sit above or below the muscle? How should silicone implants be monitored once I am home? - Tummy tuck, liposuction and thigh lift: Will you repair my abdominal muscles? How many areas, or how much fat, is safe for me in one session? What do you do to reduce the risk of blood clots, especially before a long flight? - FTM mastectomy: Given my chest size and skin quality, which technique would you use? Will I need nipple grafts? What assessment or letters do you require? - Scar revision: Is surgery the right step now, or would you wait or try another treatment first?

On the day, have with you a written list of every medicine and supplement you take. You will usually be asked to stop smoking and nicotine products well before and after surgery, and to pause medicines that increase bleeding, but only on medical advice.

The hospital where Dr. Kriangkrai operates stands on Charansanitwong Road at number 454, Soi 90 (Bang O subdistrict, Bang Phlat district), Bangkok 10700. By Yanhee's own count the hospital has 400 beds. In JCI's own online directory (Joint Commission International), Yanhee appears as accredited under the Hospital Program, with a certificate on the hospital's website whose stated validity begins on 13 March 2026 and ends on 12 March 2029. For the Thai national standard the picture differs: the Hospital Accreditation (HA) database shows Yanhee's most recent HA cycle expiring in 2019 and no current HA certification.

Arriving and getting around. International patients register at a dedicated counter on Yanhee's first floor. An interpreter is assigned when you arrive and goes with you as you move between departments, and Yanhee does not charge for interpreting. English-speaking coordinators and staff are posted at key points in the building. Yanhee can organise paid transport for the airport, hotel and hospital legs of your trip. It also works with partner hotels, whose rates are lower if the room is part of a Yanhee package.

Before and during your stay. Ahead of the trip, you can submit your case for a no-cost online pre-assessment, which one of Yanhee's international coordinators looks over. During an admission, someone from the international liaison team comes to see you every day, and patients whose treatment keeps them in Thailand longer than planned can get help extending their visa. Bills can be settled by bank transfer, by debit or credit card, or in cash in the main currencies.

Leaving and follow-up. Yanhee hands you three documents on leaving hospital: your discharge summary, a general medical certificate, and a fit-to-fly certificate confirming you can travel. Back home, the doctor keeps track of your recovery by email, using photos you send.

Language. Because his English profile lists English alongside Thai, many international patients will be able to go through their plan with him without an interpreter. Our research does not record which other languages Yanhee's interpreters cover, so tell us in advance if you need one.

Typical time in Thailand. The figures below are general guidance from our procedure guides; the date he clears you to fly is the one that matters: - 5–7 days: eyelid surgery, chin augmentation. - 7–10 days: nose surgery, breast augmentation, liposuction. - 10–14 days: facelift or neck lift, thigh lift, top surgery. - 12–14 days: tummy tuck.

Combined operations generally need a longer stay. Choose flights you can change, book accommodation near the hospital, plan for help with bags after breast, chest or body surgery, and talk to him about blood-clot prevention if your flight home is a long one.

The fuller the picture you send, the more realistic Dr. Kriangkrai's first answer can be. Gather the items below. Once your booking has been confirmed, you receive a secure link for uploading photos and records, so please don't send them by ordinary email.

General information we need - Age, height and current weight, plus any large recent change in weight. - Health conditions, every medicine and supplement you take (anything that thins the blood matters most) and any allergies. - Your smoking or vaping habits, and how soon you could stop. - Past operations, particularly on the area you want treated; operation notes help if you still have them. - A short description of what you hope to achieve, possible travel dates, and any wish to combine procedures on one trip.

Photos for his procedure areas (against a plain wall, in even lighting, unfiltered and ideally without make-up) - Eyelids: close-up front views at eye level with your eyes open, gently closed and looking up, plus side views. Tell us if you have had an eye operation before, or if you have glaucoma, thyroid eye disease or dry eyes. - Nose: straight-on, left and right side views, and a view looking up at the nostrils, all in neutral light. Let us know about any nasal injury, previous nose surgery or difficulty breathing through the nose. - Facelift, neck lift, chin or facial fat grafting: a straight-on view, left and right profiles and the two three-quarter angles; tie your hair back and keep your chin level. - Breast augmentation: front and side views taken standing, arms relaxed, plus your current bra size and a description of the result you want. Anyone with existing implants should include the implant card, or at least the maker and size. - Tummy tuck, liposuction or thigh lift: front, back and side views of the areas concerned. For a tummy tuck, say whether you plan further pregnancies. - FTM mastectomy: front and side views of your chest, any hormone therapy you take, and any assessment letters you already have. - Scar revision: close-ups of the scar with a ruler or a coin in the frame to show its size, plus when and how it formed and any treatment so far.

Our team forwards all of this to Yanhee. Anything suggested on the strength of photos can change once he examines you.