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.

06/02/2026

"Just take your medicine." "Change your entire diet." "Load up on supplements."

Hashimoto's patients get told a lot of things. Here's what the clinical evaluation actually looks like. 👇

Hashimoto's is the most common cause of hypothyroidism in the U.S. — and it's also one of the most misunderstood. When a patient comes in, here's what Dr. Leffert actually looks for:

🔹 Physical exam — an enlarged thyroid gland, typically diffuse rather than nodular
🔹 Blood tests — elevated TSH and low T4 confirm hypothyroidism
🔹 TPO antibodies — a marker that confirms Hashimoto's as the cause

One important distinction: TPO antibodies are a marker of the disease. They are not the cause. Hashimoto's is an autoimmune condition where the body inflames the thyroid for reasons we don't fully understand — and that changes how we think about treatment.

More on that in the next clip.

📞 214-369-5992
🌐 ntendocenter.com

Thyroid disease isn't just a women's issue.Most men don't know that. 👀More on this all month long. 👇📞 214-369-5992🌐 nten...
06/01/2026

Thyroid disease isn't just a women's issue.
Most men don't know that. 👀
More on this all month long. 👇

📞 214-369-5992
🌐 ntendocenter.com

Three words nobody wants to hear from their doctor. 👇"No one likes the word cancer. But when it comes to the thyroid, it...
05/29/2026

Three words nobody wants to hear from their doctor. 👇

"No one likes the word cancer. But when it comes to the thyroid, it is not the death sentence that people associate with other cancers."
— Dr. Jonathan Leffert, Board-Certified Endocrinologist

Less than 2% of people will die from thyroid cancer over their lifetime. 98-99% go on to live long, productive lives.

If you or someone you love has recently received a thyroid biopsy result or a thyroid cancer diagnosis — don't spiral into the worst-case scenario before you've talked to a specialist. The clinical reality is very different from what most patients fear.

We're here to answer your questions.
📞 214-369-5992
🌐 ntendocenter.com

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

Facebook only:

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

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

Alerts

Be the first to know and let us send you an email when Dr. Jonathan Leffert posts news and promotions. Your email address will not be used for any other purpose, and you can unsubscribe at any time.

Shortcuts

Featured

Share

Category