Welcome
We are excited to share some wonderful news at Lake Internal Medicine Associates! As part of our ongoing commitment to meet the healthcare needs of our community, we are transitioning to a comprehensive family practice under our new name, Lake Family Wellness.
This transition allows us to extend our primary care services to all ages, from infants to seniors, while maintaining the high level of personalized attention and care that has been the hallmark of Dr. Tang’s legacy. We are taking special precautions to keep well and sick patients separated. We believe that health is a journey best taken together, and our dedicated team is here to support you every step of the way.

At Lake Family Wellness, our mission remains unchanged: to provide individualized care tailored to you and your family. Our focus is on fostering strong relationships with our patients and delivering healthcare solutions that fit your unique lifestyle and needs.
As we evolve, you can expect the same unwavering commitment to excellence that so many in our community have valued over the years. We’re honored to expand our services and look forward to providing you and your loved ones with the trusted, compassionate care that you deserve.
Join our family at Lake Family Wellness and experience a new era of healthcare!
Experienced Providers
At our practice, we pride ourselves on our team of experienced nurse practitioners who bring a wealth of knowledge and compassion to patient care. With years of practice in skilled nursing, gerontological medicine, and both adult and pediatric primary care, our dedication to healthcare excellence shines through in everything we do.
We understand that each patient is unique, which is why we prioritize individualized care tailored to meet your specific needs and circumstances. Our holistic approach means we look beyond just symptoms; we take the time to understand your medical history, lifestyle, and personal preferences. This allows us to create comprehensive, patient-centered care plans that empower you on your journey to health and wellness.
Professional & Friendly Staff
We understand that visiting a medical office can sometimes be daunting, which is why we foster a warm and welcoming environment that feels like home. Many of our staff have become like family over the years, and their familiar smiling faces are always here to greet you with kindness and understanding. From your first appointment, through sick visits and to ongoing wellness visits, you can trust that you’re in good hands with our dedicated team.
On Call 24/7
Imagine having peace of mind knowing that expert assistance is just a phone call away, even during the evening or over the weekend. Whether it’s a quick question or an urgent concern, our providers are ready to listen and offer guidance whenever you need it. We prioritize your convenience and are committed to being there for you, making healthcare accessible at any hour.
Same Day Appointments
Get the care you need, when you need it! Health issues can arise unexpectedly, which is why we’re proud to offer SAME-DAY appointments designed for your convenience. Whether you’re an established patient or new to our practice, we prioritize your health and peace of mind. Our dedicated team is available Monday through Friday, ready to assist you with any urgent medical needs. Your well-being is our top priority; simply reach out to us, and we’ll strive to get you in as soon as possible.
Professional Partnerships
In partnership with our dedicated hospitalist at Advent Health Waterman, our patients can experience streamlined continuity of care. Our hospitalist works closely with our office and specialists to ensure that patients admitted to the hospital or those in need of urgent attention receive the expert guidance and management they deserve. With direct lines of communication, our hospitalist ensures your progress is shared, interventions are coordinated, and support is ever-present—whether you’re in the office or receiving care at the hospital. We have also formed partnerships with leading specialists in Lake County and the surrounding area. This wide-ranging cooperation enables us to provide comprehensive care strategies that address each patient’s unique health journey efficiently and effectively.
Insurances Accepted
Stay tuned for ongoing updates as we accept additional insurance plans. This is an evolving process. Currently, we are accepting the following insurance plans:
- Medicare
- Cigna Commercial Plans
- Aetna
- United Healthcare
- First Health
- Florida Blue
If you do not see your insurance plan on the list, please call the office and ask for an update on when we will accept your insurance plan.
Contact us to see if we are in your network currently.

Elizabeth Shirley, APRN, FNP-BC
Family Nurse Practitioner
Liz has years of experience in Pediatric
and Adult medicine, specializing in
cardiology, mental health and women’s health. She is a competitive horseback
rider, a mother and passionate about
holistic care

Robin Nielsen, APRN, FNP-BC
Family Nurse Practitioner
Robin has been a nurse since 2013
and has extensive experience in long
term acute care as well as pediatrics.
Robin has a passion for public health
and preventive medicine. She is a
mom of 4 and enjoys gardening in
her free time.

Tina Walker, APRN, FNP-BC
Family Nurse Practitioner
Tina has years of experience within ICU nursing. Bridging her interests, values, and professional goals she entered into Adult Internal Medicine as a Nurse Practitioner. Tina has a passion for cardiology and is passionate about holistic care.
Our Services
Our office focuses on a variety of pediatric and adult diseases including the management of high blood pressure, diabetes, high cholesterol, heart disease, osteoarthritis, dermatological conditions, gastrointestinal reflux (GERD), PCOS, women’s health, thyroid disorders, asthma, COPD, and acute illnesses.

Primary Care
Primary care services at Lake Family Wellness encompasses a wide range of essential healthcare offerings tailored to meet the diverse needs of patients of all ages. This starts with routine preventive exams and screenings to monitor general health and catch any potential issues early on. Family nurse practitioners are trained to provide attentive, patient-centered care, taking the time to thoroughly understand a patient’s medical history, current symptoms, lifestyle factors, and concerns to develop an appropriate treatment plan. They are skilled in diagnosing and managing a broad spectrum of common acute and chronic conditions, from flu and strep throat to diabetes and heart disease. Patients can rely on Lake Family Wellness as a trusted, accessible hub for coordinating their total healthcare needs, building an ongoing relationship with providers who intimately know their unique medical profile. With a focus on preventive care and whole-person wellness, preventive care plays a vital role in supporting your long-term health and wellbeing.

Medical Weightloss
At Lake Family Wellness we will partner with you for successful weight loss. A successful weight loss program includes realistic goals, accountability, a healthy eating plan along with a plan to increase physical activity. We will be here to support you and offer guidance throughout your journey to incorporate healthy lifestyle changes and permanent weight loss. We offer a wide range of programs for weight loss management including phentermine, compounded semaglutide, Zepbound, Wegovy and diet modification. Supplemental weekly injections are available to help the body more efficiently burn fat.
In addition to weight loss management, Lake Family Wellness offers multiple options for IV hydration and supplementation to help support the body’s immune system, boost metabolism, assist with PMS symptoms ~ and many others

Urgent Care
Patients seeking immediate medical attention for acute health concerns, look no further than Lake Family Wellness’ urgent care services. These same-day appointments cater to a range of urgent but non-life-threatening issues, such as urinary tract infections, upper respiratory illnesses, and other sudden, bothersome symptoms. Rather than visiting a standalone urgent care clinic or the crowded emergency room, patients can conveniently access this level of care right at their trusted family practice. The provider team is intimately familiar with your medical history and can provide personalized, efficient treatment tailored to your individual needs. This continuity of care is especially valuable, as the provider can quickly assess the situation, order any necessary tests, and initiate the appropriate treatment plan, whether that involves prescription medication, over-the-counter remedies, or simply rest and recuperation recommendations. Patients appreciate the ability to be seen promptly without an appointment, often the same day, to get the relief they need for their pressing medical issue.

Medication Management
Managing medications is a critical aspect of primary care, as it involves the careful review and oversight of a patient’s entire medication regimen. During a medication review, the provider takes a comprehensive look at all the medications the patient is currently taking, including both prescription drugs and over-the-counter supplements. This allows the provider to identify any potential interactions, duplications, or inappropriate dosages that could put the patient’s health at risk. The review also gives the provider an opportunity to ensure the patient is taking their medications as directed and experiencing the intended therapeutic benefits. Oftentimes, the medication review will prompt adjustments to the patient’s drug therapy, such as discontinuing unnecessary medications, switching to more effective or safer alternatives, or optimizing dosages. Effective medication management in primary care requires close collaboration between the provider and patient, as the patient’s active participation in reporting any side effects or concerns is essential. Regular medication reviews are particularly important for patients with multiple chronic conditions who may be taking a complex array of drugs. By staying on top of a patient’s complete medication profile, primary care providers can help minimize the risks of adverse drug events and improve overall health outcomes. Careful medication management is thus a foundation of high-quality, patient-centered primary care.

Pediatric Care
Lake Family Wellness offers a wide range of specialized care and support for young patients and their families. Regular well-child visits are a cornerstone, allowing our providers to closely monitor a child’s physical, social, and emotional development from birth through the teenage years. These routine checkups include crucial preventative care like administering scheduled vaccinations to protect against dangerous illnesses. Our providers also provide valuable nutritional guidance to ensure growing bodies get the right balance of nutrients, and they offer anticipatory advice to help parents navigate each new stage, from the newborn phase to the busy toddler years and beyond. Caring for the whole child, our providers address not just physical health, but also a child’s overall wellbeing, providing counseling and resources for any social, behavioral, or mental health concerns that may arise. For families just starting their parenting journey, our providers are a trusted source of support and newborn care education. And as children become more active, our providers conduct comprehensive sports physicals to clear them for participation in school athletics programs. Through every phase of childhood development, the providers at Lake Family Wellness is ready to equip parents with the knowledge and tools to raise happy, healthy kids.

Diagnostics/Laboratory Services/Additional Services
The medical office we operate offers a comprehensive range of healthcare services conveniently located all under one roof. At the heart of our facility we offer on-site rapid laboratory testing that allows us to perform a wide variety of routine lab tests and point-of-care diagnostics. Patients can have their blood drawn, urine analyzed, and other essential medical samples processed without having to travel to a separate lab facility. We offer testing that will help determine if you have COVID, flu and RSV. This streamlined approach saves time and enhances the patient experience.
In addition to lab services, we also provide a variety of other important healthcare services. Our medical team is qualified to administer vaccinations and immunizations, ensuring patients of all ages stay up-to-date on their shots.
We also offer thorough sports physicals to clear athletes for participation.
We offer routine women’s health exams like Pap smears and management of menopause symptoms
For patients who may be experiencing heart or lung issues, we have the capability to conduct electrocardiograms and pulmonary function tests right here on-site.
With this expansive menu of medical services available, our patients can fulfill the majority of their healthcare needs in a single, convenient location without having to make separate trips to multiple providers. It’s a true one-stop-shop for comprehensive, coordinated care.

Your Health Starts Here
Elizabeth Shirley, APRN, FNP-BC ~ Robin Nielsen, APRN, FNP-BC ~ Tina Walker APRN, FNP-BC
(352) 589-4774
(352) 589-5092
Appointments available Monday to Thursday 8:30 – 5:00 and Friday 8:30 – 12:00
2101 Prevatt Street
Eustis,FL 32726
