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Endocrinology · Diabetology · Weight Management

The doctor who gets
the diagnosis right.

Endocrinologist & Diabetologist in Lebanon

Rated the best endocrinologist in Lebanon by patients — 55 five-star reviews and counting. Practicing across 4 locations in Beirut and Metn, with easy access from Keserwan. Patients trust me for thorough investigation, clear explanations, and accurate diagnoses. Evidence-based care built on the latest research, the newest treatments, and the time to investigate properly.

4 Clinic locations
5.0★ Google rating
3 Languages
Dr. Marie Noelle Kallas Chemaly

Dr. Marie Noelle Kallas Chemaly is a board-certified endocrinologist in Lebanon with an MD from Université Saint-Joseph (USJ), a DFMS in Endocrinology from Université Paris Cité (Paris VII-Diderot), and a PhD in endocrine and metabolic research. She specializes in thyroid disorders, diabetes management, lipid disorders & dyslipidemia, PCOS, obesity, osteoporosis, and endocrine tumors. She practices at four locations across Mount Lebanon — Mount Lebanon Hospital (Hazmieh), Bellevue Medical Center (Mansourieh), Centre Hospitalier de Bhanès, and her private clinic in Dbayeh — and consults in Arabic, French, and English. Her research on parathormone reference values in Middle Eastern populations has been published in the International Journal of Endocrinology (PubMed). She is the founder of the Young Endocrinologists Network (YEN) and a member of the European Society of Endocrinology (ESE), the Lebanese Society for Endocrinology, Diabetes & Lipids (LSEDL), and the Lebanese Order of Physicians.

What I treat

Your body is sending signals

Fatigue, unexplained weight changes, mood shifts — these aren't things to live with. They're symptoms with causes, and causes have solutions.

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Thyroid Disorders

Tired all the time? Gaining weight with no explanation? Your thyroid may need a closer look. I run the full panel — not just TSH — and connect the dots between symptoms, antibodies, and imaging. Accurate diagnosis is the first step to getting answers.

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Diabetes Management

Every month without proper management costs you. I use the latest medications, CGM technology, and personalized plans for Type 1, Type 2, gestational diabetes, and insulin resistance — because control today prevents complications tomorrow.

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Weight Management

If diets keep failing, the problem isn't willpower — it's hormones. Medical weight management grounded in endocrinology, addressing the hormonal and metabolic root causes behind stubborn weight gain.

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Osteoporosis

By the time you feel it, bone loss is already advanced. I screen, assess fracture risk, and build treatment strategies before a fracture changes your life — not after.

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PCOS & Hormonal Conditions

Irregular cycles, acne, hair changes, difficulty conceiving — PCOS is one of the most underdiagnosed conditions in women. I run the full hormonal workup, not just the basics.

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Preventive Endocrinology

Pre-diabetes is reversible. Early metabolic syndrome is fixable. But only if it's caught early. I run the deeper metabolic screens — the ones that catch insulin resistance, early thyroid shifts, and hormonal imbalances before they become clinical.

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Endocrine Tumors

Evaluation and management of adrenal tumors, pituitary adenomas, neuroendocrine tumors, and other endocrine neoplasms. Coordinated care from diagnosis through treatment and long-term follow-up.

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Lipid Disorders & Dyslipidemia

High cholesterol and elevated triglycerides are often driven by hormonal and metabolic factors. I evaluate dyslipidemia in the context of your full metabolic picture: thyroid function, insulin resistance, and hormonal balance. Treating the mechanism, not just the number.

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AI in Endocrine Care

Integration of AI-powered tools into clinical practice — from CGM analytics and predictive algorithms to AI-assisted imaging interpretation. Technology for earlier detection and better outcomes.

Each condition above has a dedicated page with symptoms, diagnosis, treatment, and FAQs. Click any card to read the full guide.

Where to find me

Close to wherever you are

Four locations across Beirut and Metn — easily accessible from Keserwan. No reason to wait.

Mount Lebanon Hospital — MLH
Hazmieh · Beirut
Full-service hospital setting with advanced diagnostic capabilities
📱 WhatsApp 📍 Directions Full clinic page →
Bellevue Medical Center
Mansourieh · Metn
Modern medical center serving the greater Metn region
📞 Call +961 1 682 666 ext. 5650 🔗 Book Online 📍 Directions Full clinic page →
Centre Hospitalier de Bhaness
Bhaness · Metn
Historic mountain hospital with advanced diagnostics — serving Metn, Keserwan, and the mountain
📞 Call +961 4 983 770 ext. 2626 📍 Directions Full clinic page →
Private Clinic
Dbayeh · Metn
Multidisciplinary professional clinic — Dbayeh, near Keserwan and the coast
📱 WhatsApp 📍 Directions Full clinic page →

Each location has a dedicated page with directions, nearby areas served, services available, and patient reviews.

Areas served

Beirut, Mount Lebanon,
and across Lebanon

Patients choose the location that makes first visits and follow-up simplest, whether they are coming from Beirut, Mount Lebanon, the coast, or farther parts of the country.

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Beirut

For patients living or working in Beirut, Hazmieh and Mansourieh are usually the most practical access points depending on traffic pattern and the kind of visit needed.

Explore Beirut access →
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Mount Lebanon

For Baabda, Metn, Upper Metn, and nearby residential corridors, the best entry point depends on whether Bellevue, Bhaness, Dbayeh, or Hazmieh is easier from your route.

Explore Mount Lebanon access →
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Keserwan & North Coast

Dbayeh is often the easiest clinic for patients coming from the northern coastal corridor or for those who split time between Beirut and the coast.

See the Dbayeh clinic →
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Across Lebanon

Some families travel farther for specialist endocrine care, then continue follow-up at the clinic that keeps return visits as simple as possible.

See the full practice profile →
My approach

Why patients stay

Most of my patients were referred by other patients. Here's why.

I don't settle for "normal"

Lab results in range don't mean you're healthy. I take the time to examine thoroughly and explain every finding — looking at patterns, borderline values, and symptoms that deserve attention. Patients consistently say they feel heard for the first time.

Current science, not old habits

I stay on top of the newest medications, technologies, and clinical research. Your treatment reflects the latest evidence-based guidelines and clinical research.

Your life, not just your labs

Medication alone isn't the answer. I work with you on sustainable changes that fit your actual life — because a plan you can't follow is a plan that fails.

Available — even between visits

Arabic, French, or English — in the language that helps you be most precise. And when concerns come up between appointments, I respond. Your health doesn't wait for office hours.

Read Dr. Kallas Chemaly's full credentials →

What patients say

55 five-star reviews. Every review, five stars.

What patients say on Google — in their words, not mine.

"She listened carefully, showed genuine care, and never created panic. She reassured me with clear explanations — and that made all the difference."

Patient · Google Reviews

"She took the time to examine me thoroughly and explain everything. She even responds to my concerns between visits — without requiring an appointment."

Patient · Google Reviews

"Up to date on the latest innovations in diabetology and nutrition. Clear, comprehensive explanations. I felt heard, reassured, and in very good hands."

Patient · Google Reviews
Professional Memberships

Recognized by peers, connected globally

Founder
Young Endocrinologists Network (YEN)
2025 – Present
Member
European Society of Endocrinology (ESE)
2025 – Present
View all memberships and affiliations →
In the Media

Featured appearances

RT France Interview
RT France
National television interview on RT France discussing endocrine health and clinical practice in Lebanon.
Watch on YouTube →
MTV Lebanon — Alive
MTV Lebanon
National television appearance on MTV Lebanon's "Alive" segment discussing endocrinology and patient care.
Watch on YouTube →

+ 2 more appearances on Alfa TV and VDL News

View all media appearances →
View all media appearances → · Research & publications → · View full credentials →
MD
Saint Joseph University (USJ)
Beirut, Lebanon
DFMS Endocrinology
Université Paris Cité
Paris VII-Diderot, France
Specialist
Endocrinology · Diabetology
Weight Management
العربية
Arabic
Français
French
English
English
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MD — Université Saint-Joseph (USJ)

Faculty of Medicine, Beirut

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DFMS — Université Paris Cité

Advanced specialization (Paris VII-Diderot)

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PhD — Endocrine & Metabolic Research

Research in endocrine & metabolic disorders

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4 Clinic Locations

Across Baabda, Metn & Keserwan

View full credentials, education, and memberships →
Frequently Asked Questions

Answers to Common
Patient Questions

Thyroid disorders, diabetes, PCOS, weight management, dyslipidemia, osteoporosis, and endocrine tumors. Each has a dedicated page with full details.

Mount Lebanon Hospital (Hazmieh), Bellevue Medical Center (Mansourieh), Centre Hospitalier de Bhanès, and Dbayeh Private Clinic. Each location page has directions, hours, and nearby areas served.

Patients in Beirut often choose Dr. Kallas Chemaly for difficult thyroid, diabetes, PCOS, lipid, osteoporosis, and weight-management cases because she combines thorough investigation with clear explanations and evidence-based treatment. See the Beirut page →

She sees patients across Mount Lebanon at Bellevue Medical Center in Mansourieh, Centre Hospitalier de Bhanès, her private clinic in Dbayeh, and Mount Lebanon Hospital in Hazmieh. See Mount Lebanon clinic access →

Yes. Patients also travel in from Jbeil, Byblos, Batroun, Saida, Damour, Aley, and mountain routes when they want a specialist endocrine opinion. The main decision is which clinic will make follow-up easiest once the first visit is done.

If you have uncontrolled diabetes, unexplained weight changes, thyroid issues, irregular periods, or high cholesterol that won't respond to treatment. See all 18 FAQs with detailed answers →

View all 18 FAQs →

Ready to Take
the Next Step?

Book a consultation with Dr. Kallas Chemaly. One tap on WhatsApp is all it takes to start your journey toward better endocrine health.

💬 Chat on WhatsApp

Online consultations available for patients abroad

Get in Touch

Book Your
Consultation

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WhatsApp / Call

+961 70 977 856
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Primary Clinics

Mount Lebanon Hospital · Bellevue Medical Center
Centre Hospitalier de Bhanès · Dbayeh Private Clinic

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Hours

Monday – Friday: 9:00 AM – 6:00 PM
Saturday: By appointment

Explore

All Pages

Conditions

Thyroid Specialist Diabetes Doctor PCOS Treatment Weight Management Lipid Disorders & Dyslipidemia Osteoporosis Endocrine Tumors Preventive Endocrinology AI in Endocrine Care

Locations

Mount Lebanon Hospital — Hazmieh Bellevue Medical Center — Mansourieh Centre Hospitalier de Bhaness Private Clinic — Dbayeh Endocrinologist in Beirut Endocrinologist in Mount Lebanon Online — GCC & Diaspora Online Consultation

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