Dr. Jonathan Leffert

Dr. Jonathan Leffert Jonathan Leffert, MD is a board certified endocrinologist.

He offers thyroid RFA, a nonsurgical and thyroid sparing treatment option for patients with thyroid nodules.

30+ years of clinical experience. Still asks if you'd like music during your biopsy. ⭐⭐⭐⭐⭐"He was patient with my questi...
05/28/2026

30+ years of clinical experience. Still asks if you'd like music during your biopsy. ⭐⭐⭐⭐⭐

"He was patient with my questions and walked me through everything step by step."
— Gladys M., NTEC patient

That combination of expertise and genuine care is what sets Dr. Leffert apart.

📍 North Texas Endocrine Center | Dallas, TX
🔗 ntendocenter.com

A cancer diagnosis changes everything. But not all cancers are the same — and thyroid cancer is proof of that. 👇"Even th...
05/27/2026

A cancer diagnosis changes everything. But not all cancers are the same — and thyroid cancer is proof of that. 👇

"Even though thyroid cancer is cancer, we want to look at it more like another disease — a manageable disease, one that can be treated, one that can be followed."
— Dr. Jonathan Leffert, Board-Certified Endocrinologist

That's not dismissing the diagnosis. That's giving patients the accurate clinical picture so they can move forward with clarity instead of fear.

Thyroid cancer requires treatment. It requires follow-up. But for the vast majority of patients, it becomes part of their medical history — not the end of their story.

📞 214-369-5992
🌐 ntendocenter.com

If you or someone you love has just been told they have thyroid cancer — save this post and read it before you do anythi...
05/26/2026

If you or someone you love has just been told they have thyroid cancer — save this post and read it before you do anything else. 👇
A thyroid cancer diagnosis is overwhelming. But it is also one of the most treatable, most manageable cancer diagnoses that exists. Swipe through for the full clinical picture — survival rates, what your biopsy score means, every treatment option available, and why papillary thyroid cancer is in a completely different category from the cancers you're afraid of.
Questions? We're here.
📞 214-369-5992
🌐 ntendocenter.com

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05/25/2026

Thyroid cancer and pancreatic cancer are not the same thing. Not even close. 👇

When people hear the word "cancer" they picture the most aggressive, life-altering versions they've seen affect people they love. Thyroid cancer — specifically papillary thyroid cancer — is in a completely different category. Here's why:

🔹 It rarely spreads. Unlike many cancers, papillary thyroid cancer tends to stay within the neck region. The aggressive, body-wide metastasis that makes other cancers so dangerous is not characteristic of thyroid cancer.
🔹 The thyroid is replaceable. We can remove it and replace its function with medication. That's not true of most organs affected by cancer.
🔹 It's manageable long-term. For the vast majority of patients, thyroid cancer becomes part of their medical history — something they live with and monitor, not something that defines or ends their life.

This is not minimizing a diagnosis. It's giving patients the accurate clinical picture so they can move forward with clarity instead of fear.

📞 214-369-5992
🌐 ntendocenter.com

05/22/2026

Here are the three clinical criteria that must be met before active surveillance is even on the table:

🔹 No extra-thyroidal masses — the cancer must be contained within the thyroid
🔹 No lymph node involvement — no spread to surrounding nodes
🔹 Not close to the trachea — proximity to the laryngeal nerve raises the risk of vocal cord paralysis

If any one of these criteria isn't met, surgery becomes the appropriate next step. This is exactly why thyroid cancer management requires a specialist who knows your full picture — not a generalized recommendation.

📞 214-369-5992
🌐 ntendocenter.com

05/21/2026

First, the classifications:
🔶 Bethesda 5 — suspicious for malignancy
🔴 Bethesda 6 — malignant

Both require action. But "action" doesn't automatically mean surgery. Depending on your specific situation, you may have more options than you think:

✅ Radiofrequency Ablation (RFA) — for nodules under 1 cm in an amenable location, RFA may be an option instead of surgery
✅ Active Surveillance — monitoring the nodule over time without operating, for patients who can't safely undergo surgery or choose to wait
✅ Surgery — still the most common recommendation for Bethesda 5 and 6, but the type of surgery depends on multiple factors

Every patient's situation is different. The goal is giving you options — not a one-size-fits-all protocol.
Have questions about your biopsy results? We're here.

📞 214-369-5992
🌐 ntendocenter.com

05/20/2026

"You have thyroid cancer." 😨

Those three words can feel like a death sentence. But here's what your endocrinologist actually knows about thyroid cancer that most patients don't:

Less than 1-2% of people will die from thyroid cancer over their lifetime.

98-99% of patients go on to live long, productive lives.

No one likes the word cancer. But thyroid cancer is not the same as the cancers you've heard about on the news or seen affect people you love. It is one of the most manageable, treatable diagnoses in all of oncology — and understanding that changes everything about how you approach it.

If you or someone you love has recently received a thyroid cancer diagnosis, watch the full video at the link in our bio.

📍 North Texas Endocrine Center | Dallas, TX
📞 214-369-5992
🌐 ntendocenter.com

Everything you need to know about GLP-1 medications — from a board-certified endocrinologist who has been prescribing th...
05/20/2026

Everything you need to know about GLP-1 medications — from a board-certified endocrinologist who has been prescribing them for nearly 20 years. 👇 Save this post before your next appointment.

Ozempic, Wegovy, and Mounjaro are changing how we treat obesity. But there's a lot more to a successful outcome than a prescription. Swipe through for the full clinical picture — who qualifies, what the risks are, how to manage side effects, and why it matters who is writing your script.

📍 North Texas Endocrine Center | Dallas, TX
🌐 ntendocenter.com

05/19/2026

Endocrinologists have been prescribing GLP-1 medications since 2006 — nearly 20 years before they became a household name. We didn't discover Ozempic on social media. We've been managing these medications, their side effects, and their long-term outcomes across thousands of patients for two decades.

That experience matters because:
🔹 We understand the full cardiometabolic picture — not just the number on the scale
🔹 We've been managing GLP-1s in diabetic patients long before weight loss became the headline
🔹 We recognize side effects early and know how to adjust treatment accordingly
🔹 We treat obesity as the complex medical condition it is — not a quick fix

Telehealth options exist. But when you're managing a chronic disease, you deserve a physician who has been in this space since the beginning.

📍 North Texas Endocrine Center | Dallas, TX
🌐 ntendocenter.com

05/15/2026

About 20% of patients experience GI side effects on GLP-1 medications — nausea, constipation, acid reflux, or heartburn. The good news: most people can work through it with the right approach.
Here's Dr. Leffert's clinical strategy:

🔹 Start at the lowest dose and titrate up slowly — don't rush the process
🔹 If side effects spike, bring the dose back down before going up again
🔹 Stay as well hydrated as possible — it makes a significant difference
🔹 If symptoms become consistent or severe, it may be time to pause and reassess
🔹 Every patient tolerates medication differently — the goal is finding your comfortable threshold

Dr. Leffert's general philosophy: don't treat a medication side effect with another drug if you don't have to. Adjust the dose first.

This is what individualized, physician-led care looks like — not a one-size-fits-all prescription.

📍 North Texas Endocrine Center | Dallas, TX
🌐 ntendocenter.com

05/14/2026

90% of people who stop a weight loss medication gain the weight back. 📊
That's not an Ozempic problem. That's a weight loss problem — and it applies to every medication, every diet, and every treatment that's ever existed.

Here's what Dr. Leffert actually tells his patients about long-term GLP-1 use:
🔹 How long you stay on it depends on how you respond — there's no universal timeline
🔹 Many patients stay on a lower maintenance dose long-term, just like blood pressure or cholesterol medication
🔹 Some patients do successfully stop — but only when they've made lasting changes to diet and exercise habits
🔹 The research on long-term protocols is still evolving — and an endocrinologist stays current so you don't have to

This is why GLP-1s aren't a quick fix. They're a chronic disease treatment that works best with a physician who knows your full picture.

📍 North Texas Endocrine Center | Dallas, TX
🌐 ntendocenter.com

Address

NORTH TEXAS ENDOCRINE CENTER: Carrell Clinic Center, Tower II, 9301 North Central Expressway, Suite 570
Dallas, TX
75231

Opening Hours

Monday 8am - 4:30pm
Tuesday 8am - 4:30pm
Wednesday 8am - 4:30pm
Thursday 8am - 4:30pm
Friday 8am - 4:30pm

Telephone

+12143695992

Website

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