Endocrinology Care in Hatillo Where Understanding Meets Care
Meet Dr. Sheila S. Mercado Méndez, Board-Certified Endocrinologist
Puerto Rico carries one of the highest rates of diabetes in the United States, and thyroid and metabolic conditions here are just as common — and far more often missed. I am board-certified in Endocrinology, Diabetes, and Metabolism, and I opened EndoInnova in Hatillo so north-coast patients wouldn’t have to drive to the metro area for specialist care.
Most patients arrive having managed a condition for years without anyone explaining it to them. That’s where my consultations begin. Before we discuss treatment, I want you to understand your labs, your symptoms, and how diabetes, thyroid function, and weight connect to each other — because they almost always do.
I am also introducing InBody body composition testing, which measures muscle, body fat, and visceral fat separately, so progress is tracked by what’s actually changing rather than by scale weight alone.
— Dr. Sheila S. Mercado Méndez, Board-Certified Endocrinologist | Diabetes & Metabolism
Guiding Our Care Forward
Puerto Rico’s north coast has long carried more diabetes, thyroid, and metabolic disease than it has specialists to treat it. These two commitments shape how we’re closing that gap.
Mission
Specialist Endocrine Care, Without the Drive to San Juan
Vision
A Complete Metabolic Picture, Not Just a Number
A Trusted Educational Resource for Our Patients
Understanding Diabetes, Not Just Managing It
- Learn what your A1C actually measures and why it differs from daily glucose readings.
- Understand how meals, sleep, stress, and activity move your numbers hour to hour.
- Know the difference between type 1, type 2, and prediabetes — and why treatment differs.
- Learn how insulin works in the body and why timing matters as much as dose.
- Understand what continuous glucose monitoring shows that finger-sticks cannot.
- Recognize the early warning signs worth calling the clinic about, not waiting out.
Why Weight Is a Medical Question, Not a Willpower One
- Understand why obesity is classified as a chronic medical condition, not a lifestyle failure.
- Learn how insulin resistance drives weight gain and why it often goes undiagnosed.
- Know what BMI does and does not tell you about your actual metabolic health.
- Understand the difference between muscle, body fat, and visceral fat on a body composition report.
- Learn why thyroid and hormonal conditions must be ruled out before weight treatment begins.
- Understand how GLP-1 and other medications are evaluated on an individual clinical basis.
Reading Your Thyroid Results With Clarity
Education on hypothyroidism, hyperthyroidism, Hashimoto’s disease, and thyroid nodules — for patients whose symptoms have been dismissed as normal.
- Learn what TSH, T4, T3, and thyroid antibodies each indicate about your gland.
- Understand why symptoms can persist even when lab results are called normal.
- Know how thyroid function influences weight, energy, mood, heart rate, and fertility.
- Learn why levothyroxine absorption depends on timing, food, and other medications.
- Understand what a thyroid nodule is and when imaging or biopsy is warranted.
- Recognize how autoimmune thyroid disease progresses and what to monitor over time.
Endocrinology Care in the Heart of Hatillo
For many patients on the north coast, seeing an endocrinologist has meant a morning lost to traffic and a specialist who runs late. EndoInnova was built to work differently. The clinic sits in Carrizales, Hatillo, with on-site parking and unhurried appointment blocks, so consultations with Dr. Sheila S. Mercado Méndez aren’t compressed into ten minutes.
Patients travel from Arecibo, Camuy, Manatí, Quebradillas, and Barceloneta, and are seen in Spanish or English.
Appointments can be booked online or arranged by WhatsApp at +1 787-956-0909.
Patient Stories That Inspire Confidence
Real experiences from patients who value clear guidance, compassionate care, and a better understanding of their health.
I felt heard, respected, and well cared for. The education and guidance helped me feel more confident about managing my thyroid health.
The clinic made me feel supported from the start, with personalized care focused on long-term health.
Dr. Mercado takes the time to explain everything clearly. I finally feel like I understand my condition and know what steps I need to take.
Book With a Board-Certified Endocrinologist in Hatillo
Most endocrine conditions are caught late because the early signs — fatigue, weight that won’t move, changes in appetite or mood — get explained away for years. A consultation with Dr. Sheila S. Mercado Méndez puts a specialist’s eyes on them.
Evaluations for diabetes, thyroid, obesity, and metabolic concerns are available now in Spanish and English. InBody body composition analysis is coming to the clinic soon.
