Dr. Gaël Guian — Endocrine Surgeon in Paris, Thyroid & Parathyroid
Dr Gaël Guian — Endocrine surgeon Paris
Endocrine Surgeon · Paris

Dr. Gaël Guian — Endocrine Surgeon in Paris

Exclusively specialised in thyroid and parathyroid surgery. Rigorous approach, clear communication and personalised care at every stage of your treatment.

✓ HAS-Accredited Hôpital Privé des Peupliers Book on Doctolib
Book an appointment on Doctolib 01 45 02 18 18
HAS-Accredited Surgeon
Exclusive endocrine surgery practice
NIM + Fluobeam LX systematic
Consultations in English
The surgeon

A surgeon exclusively dedicated to endocrine surgery

Dr. Gaël Guian devotes his entire surgical practice to endocrine surgery, with an exclusive focus on thyroid and parathyroid conditions. This singular specialisation allows him to develop deep expertise in preoperative assessment, choice of surgical technique, intraoperative management and postoperative follow-up. Every patient receives an individualised approach, guided by attentive listening, transparent information and a consistent commitment to clinical quality.

Scope of practice. Dr. Guian manages the full spectrum of surgical conditions affecting the thyroid and parathyroid glands: thyroid nodules, goitre, thyroid cancers, hyperthyroidism (Graves' disease and toxic autonomous nodules) and primary hyperparathyroidism including parathyroid adenoma. Each surgical decision is grounded in clinical, biological and cytological findings and aligned with current specialist guidelines (SFE-AFCE-SFMN 2022, ATA 2025, SFE 2024).

Training & background

Training and specialist qualifications

Dr. Gaël Guian completed a full academic hospital career in France, with initial training in general visceral and digestive surgery followed by advanced specialisation in endocrine surgery.

His postgraduate training included four years of dedicated post-fellowship work in endocrine surgery, including at the endocrine surgery unit of Prof. Fabrice Menegaux at Pitié-Salpêtrière Hospital — one of France's leading reference centres for thyroid and parathyroid surgery.

Academic qualifications

Degrees & diplomas

  • State Doctorate in Medicine
  • Specialist qualification in General Surgery (DES)
  • Sub-specialist qualification in Visceral and Digestive Surgery (DESC)
  • Inter-University Diploma (D.I.U.) in Endocrine Surgery — the specialist postgraduate degree in thyroid and parathyroid surgery in France
Accreditation

HAS Accreditation

  • Accredited by the French Health Authority (HAS) — a voluntary quality and safety programme for surgeons
  • Attests to commitment to risk prevention, continuous improvement and evidence-based practice
  • HAS accreditation record publicly accessible at has-sante.fr
🏛️

Dr. Guian's HAS accreditation is publicly verifiable on the French Health Authority website: has-sante.fr — Dr. Gaël Guian. This accreditation is specific to the surgical specialty and attests to active participation in a structured risk-management and quality improvement programme.

Intraoperative technologies

Technologies used in every procedure

Dr. Guian uses three intraoperative technologies systematically — not selectively — in thyroid and parathyroid procedures. All are recommended by current French and international guidelines.

Intraoperative nerve monitoring

NIM — Nerve protection

Continuous real-time monitoring of the recurrent laryngeal nerves during every thyroid procedure. Surface electrodes detect any traction or stress before injury occurs. Permanent vocal cord palsy: < 1%. Aligned with SFE-AFCE-SFMN 2022 guidelines.

Near-infrared autofluorescence

Fluobeam LX — Fluoptics®

Identifies parathyroid glands in real time using their natural autofluorescence — no contrast injection. During thyroid surgery: preserves all four glands to prevent hypocalcaemia. During parathyroid surgery: identifies the diseased gland and confirms healthy glands are intact.

Intraoperative PTH assay

ioPTH — Intraoperative cure confirmation

Used in all parathyroid procedures. PTH measured 10 minutes after adenoma removal: a > 50% drop into the normal range (Miami criterion) confirms biochemical cure before wound closure. Eliminates unnecessary bilateral exploration.

Locations

Consultation and surgical facilities

Consultations

Paris 16th — Cabinet

69 Avenue Victor Hugo, 75116 Paris

Métro Victor Hugo (line 2) / Métro Charles de Gaulle — Étoile. Easily accessible by public transport from across Paris and the greater Île-de-France region.

Appointments available online via Doctolib or by telephone at 01 45 02 18 18.

Surgery

Hôpital Privé des Peupliers — Paris 13th

8 Place de l'Abbé Georges Hénocque, 75013 Paris

Métro Maison-Blanche (line 7). Part of the Ramsay Santé group. Specialist endocrine surgery theatre, nuclear medicine department and dedicated Cancer Institute — all in a single location.

Approach

An individualised, evidence-based approach

Precision over standardisation

Surgical indications are assessed case by case, based on the complete clinical, biological and imaging picture. Not every nodule requires surgery, and not every thyroidectomy needs to be total. The aim is to offer the right intervention at the right time — neither over- nor under-treating.

Transparency at every step

During the consultation, Dr. Guian explains the diagnosis, the rationale for the proposed treatment, the surgical alternatives and the realistic risk profile in plain terms. Patients receive a detailed written estimate before any decision is made.

Continuity of care

From the preoperative consultation through to the follow-up visit, Dr. Guian personally manages every aspect of the patient's care — including hormone replacement adjustment, calcium monitoring and pathology review. There is no handover at discharge.

Frequently asked questions

Questions about Dr. Guian's practice

Can I consult Dr. Guian directly, without a referral from my GP?

Yes. While a referral from your GP or endocrinologist improves reimbursement (coordinated care pathway), it is not mandatory. If you already have a cervical ultrasound, biopsy report or blood test results, you can book a surgical consultation directly. Dr. Guian will review your existing investigations and request any additional workup needed.

How quickly can I get an appointment?

The typical waiting time for a first consultation is under two weeks. Appointments are available directly on Doctolib in real time, with immediate confirmation. For urgent situations, please call the practice directly at 01 45 02 18 18.

What should I bring to the first consultation?

Bring all available investigations: cervical ultrasound report, fine-needle biopsy cytology results (if performed), recent blood tests (TSH, free T4, calcium, PTH as relevant) and any previous medical reports or surgical records relating to your condition. The more complete your file, the more useful the consultation will be.

Does Dr. Guian see international or non-French-speaking patients?

Yes. Dr. Guian sees international patients and conducts consultations in English. Administrative support for non-French-speaking patients (insurance documents, surgical reports in English) is available on request. Please mention your language preference when booking.

Is Hôpital Privé des Peupliers accessible from central Paris?

Yes, easily. The hospital is served by Métro line 7 (Maison-Blanche station), approximately 15 minutes from central Paris. It is also accessible by bus and has parking facilities on site.

Book a consultation with Dr. Gaël Guian

Dr. Gaël Guian sees patients at his practice in Paris 16th (69 Avenue Victor Hugo, Métro Victor Hugo / Étoile) for surgical assessment of thyroid and parathyroid conditions. Appointments are available online via Doctolib or by telephone.

French health insurance (Carte Vitale) accepted — Sector 2 with OPTAM-CO — Typical waiting time under 2 weeks

Book on Doctolib 01 45 02 18 18

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