Mark Twain Medical Center

10/07/2026

Mark Twain Medical Center is pleased to announce that Jessica F. Guzman, MD, has joined its medical staff, bringing advanced training in general surgery, trauma, acute care surgery, endoscopy and surgical critical care to the Calaveras County community.
Dr. Guzman recently completed her General Surgery residency at UC Davis Health, where she trained in a high-acuity Level I Trauma Center. During her residency, she performed more than 200 endoscopies and participated in more than 400 trauma activations, gaining extensive experience caring for patients with complex surgical conditions and traumatic injuries.
In addition to her clinical training, Dr. Guzman is completing a Da Vinci Robotic Surgery Certificate, further expanding her expertise in minimally invasive and robotic-assisted surgical techniques.
Dr. Guzman earned her Doctor of Medicine degree from the Perelman School of Medicine at the University of Pennsylvania in 2020. She previously earned a Bachelor of Arts in Biological Basis of Behavior from the University of Pennsylvania, graduating cm laude.
Her academic background includes research in trauma, acute care surgery and surgical critical care at both UC Davis Health and the University of Pennsylvania. She also conducted research in hematology at the University of Pennsylvania.
“I am honored to join the medical community in San Andreas and to have the opportunity to care for patients close to home,” said Dr. Guzman. “My surgical training has taught me the importance of combining technical excellence with compassion, communication and individualized care. I look forward to building relationships with patients and families throughout Calaveras County and helping provide high-quality surgical care to the community.”
Dr. Guzman’s experience in trauma and acute care surgery complements Mark Twain Medical Center’s commitment to providing comprehensive medical services close to home. Mark Twain Medical Center offers general surgery services, including minimally invasive and robotic-assisted surgical procedures.

10/01/2026

You asked: "Should I get a mammogram if I'm over 40?" Nurse Navigator Tana Toll, RN, answers in our Q&A. Watch to find out when to screen and why regular mammograms matter for early detection.

Ready to learn more? 🤔 Check out our guide on early breast cancer detection: https://ow.ly/iEHP50ZNvzl

09/29/2026

Managing an Atrial Fibrillation (AFib) diagnosis can feel overwhelming, but it doesn't have to define your life or limit the activities you enjoy. Here are five essential tips for living well with AFib:

🙋Ask Questions: Understand how your specific form of AFib shapes your care.
📙Track Your Triggers: Keep a simple log to identify what triggers an episode.
💊Stick to Your Meds: Use pill organizers or alarms to ensure you take medications exactly as prescribed.
🏃Move with Intention: Regular, moderate exercise is vital for heart rhythm. Always consult your doctor before starting new routines.
📲Stay Connected: Don’t wait for an emergency. If you feel off, reach out to your care team, they are there to support you.

09/28/2026

Join Dr. Jessica Vaughn, a neonatologist in Santa Maria, as she shares a message of support and dedication for the brave families and tiny patients at Dignity Health for NICU Awareness Month. 👩‍🍼🚼

While a NICU stay isn't something most expecting parents plan for, Dignity Health combines world-class technology with a deep personal commitment to support your baby's medical needs and your family's journey every step of the way. You are never walking this path alone. 🧡

09/25/2026

09/25/2026

Talking about health with your family can feel uncomfortable but it’s one of the most important conversations you can have, especially when it comes to prostate health. 👨‍👩‍👧‍👦

Here are a few tips to make the conversation easier:
✅ Pick the right moment: Find a relaxed, private setting where everyone feels comfortable to talk openly.
✅ Start with the big picture: Discuss overall wellness and the importance of family medical history not just for prostate cancer, but for all health concerns.
✅ Be vulnerable: Share your own health journey or experiences with screenings first. It often makes it much easier for others to open up.
✅ Ask the important questions: Encourage family members to share their own health histories, including related diagnoses like breast, ovarian, or pancreatic cancer.

Creating open communication about health starts at home. Learn more about having open conversations around prostate cancer here: https://ow.ly/Lref50ZMmYb

09/21/2026

Stepping into the Neonatal Intensive Care Unit (NICU) can feel like entering a whole new world. While the monitors and beeps might seem intimidating, please remember that you are not alone and there is immense hope and strength to be found on this journey. 💙💪

Your role as a parent is vital. Your voice, your touch and your presence can be the most powerful medicine. Whether you’re learning new terms or advocating for your little one, we are here to help every step of the way.

Read more about the NICU journey here: https://ow.ly/97e350ZMmSL

09/18/2026

Navigating life after prostate cancer treatment can raise some questions about your health. 💙 Whether you're focusing on recovery or looking to regain your strength, small, consistent steps can make a big difference.

Here are four ways to help you thrive post-treatment:
🥗 Focus on Nutrition: Fuel your body with a balanced diet rich in whole grains, lean proteins, fruits, and vegetables to support your recovery.
🏃 Stay Active: Rebuild your strength with exercise tailored to your needs. Always consult your health care provider or a physical therapist for a plan that’s safe for you.
🤝 Build Your Support System: You are not alone. Connect with fellow survivors, caregivers, and advocacy groups to share experiences and find valuable resources.
📅 Keep Up with Follow-Ups: Your care team is your partner in health. Schedule regular follow-up appointments to monitor your well-being and manage any lingering concerns.

Read out our blog to learn more about treatment options for prostate cancer:
https://ow.ly/Z18g50ZMmWB

09/16/2026

Did you know there is a strong link between high blood pressure and Atrial Fibrillation (AFib)?

High blood pressure acts like constant strain on your heart.💗🏃🏻‍♂️ Over time, that pressure can change how your heart functions, making you more likely to develop AFib. Conversely, AFib can make it tougher to keep your blood pressure under control.

The good news? Managing your blood pressure is one of the best ways to prevent and manage AFib. It’s all about protecting your heart for the long haul.

Check out our latest blog for tips on managing AFib and your overall heart health: https://ow.ly/Mw2550ZMmPS

08/21/2026

Do you know what your blood pressure numbers mean?

Stephanie, a nurse practitioner in cardiology, explains what a healthy reading looks like and why knowing your numbers is an important part of caring for your heart.

07/23/2026

Hot summer days can take a toll quickly. Drink water often, take breaks in the shade, wear sunscreen and watch for signs of heat illness, such as dizziness, nausea, headache or confusion. A little planning can help keep summer safe and fun.

Learn more: https://ow.ly/9Tfi50Zs83Y

07/07/2026

A person is a human being first. Always. Through our Anti-Stigma initiative, we’re training care teams across our communities to lead with compassion, understanding, and hope for patients impacted by substance use disorders. Changing culture starts with how we care.

07/04/2026

On this , we recognize the freedoms we share and the moments that bring communities together. Wishing everyone a safe and happy Independence Day.

06/30/2026

For a lot of men, health care becomes something to think about later. But preventive care, regular checkups, and honest conversations can make a meaningful difference over time. This , we’re encouraging a different mindset: caring for your health isn’t weakness—it’s wellbeing.

06/26/2026

We believe everyone deserves to show up as their authentic self. During , we celebrate our LGBTQ+ team members, patients, and the people in the communities we serve. Safe, welcoming care should never be out of reach—and here, you’ll always be welcome.

06/19/2026

Juneteenth is a moment to reflect on history, progress, and the work that continues today. It’s also a reminder that equitable access to health care, resources, and support remains deeply connected to the well-being of communities. We honor the enduring spirit of freedom, advocacy, and resilience that continues to inspire progress toward a healthier future for all.

05/30/2026

This , we honor the cultural richness, traditions, and contributions of Jewish American communities.

The traditions, values, and experiences shared across generations continue to strengthen communities and deepen the connections that bring people together.

05/29/2026

This Asian American, Native Hawaiian, and Pacific Islander Heritage Month, we honor the cultures, contributions, and lived experiences of these communities.

The perspectives, traditions, and experiences shared across generations continue to shape and strengthen the communities around us.

05/27/2026

Eid al-Adha is a meaningful time of reflection, generosity, and community. Wishing all who are celebrating a meaningful and joyful Eid.