WELCOME
Primary Care, Hormone Replacement & Medical Weight Loss in Arlington Heights, IL
InnerGlow Wellness Clinic provides personalized primary care through in-person and telehealth appointments. We specialize in hormone replacement therapy for women and men, prescription weight-loss medications, lifestyle support, and aesthetic services.
Now Accepting BCBS IL and AETNA PPO Insurance!
UPDATE: Now Accepting Insurance + Personalized Weight Loss Program
We’re excited to share that InnerGlow Wellness Clinic now accepts BCBS insurance for eligible services.
If you’ve been thinking about prioritizing your health, this is a great time to start.
Now offering a personalized medical weight loss program designed to go beyond quick fixes. This program includes:
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Comprehensive lab evaluation
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Body composition tracking
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Professional wellness coaching
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Ongoing medical supervision
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Primary care support when needed
Each plan is tailored to your body, your goals, and your lifestyle — so you can achieve sustainable, long-term results.
If you’ve been struggling with weight, low energy, or feeling like nothing is working, you’re not alone — and you don’t have to figure it out on your own.
InnerGlow Clinic
At InnerGlow Wellness Clinic, we believe in empowering every individual to achieve their best self through personalized, integrative care.
Led by Katarzyna (Kasia) Szerlag, APRN-FPA, MSN, FNP-BC, InnerGlow specializes in weight management, lifestyle coaching, and advanced preventive medicine. With a unique blend of evidence-based Western medicine and functional medicine approaches, Kasia provides comprehensive, coaching-style care tailored to each patient’s individual goals.
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Our clinic offers specialized services in women’s and men’s hormone optimization, including hormone replacement therapy (HRT) and testosterone replacement therapy, as well as IV and IM vitamin infusions, primary care, and urgent care services.
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At InnerGlow, every visit is designed to be collaborative, unhurried, and empowering — helping you restore balance, build vitality, and thrive at every stage of life.
About Our Approach
Our Vision
At InnerGlow Wellness Clinic, our vision is to create a sanctuary where women and men feel empowered to take control of their health, confidence, and future.
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We envision a world where individuals no longer feel powerless, unheard, or dependent in their healthcare — but instead become informed, confident partners in their wellness journey.
Inspired by transformation, InnerGlow was founded on the belief that true healing begins when compassionate medical care meets personalized coaching, prevention, and root-cause medicine.
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Through integrative, evidence-based care delivered in a warm, refined environment, we strive to help every patient rediscover their strength, vitality, and inner glow — so they can thrive in their families, careers, and lives.
About
My name is Kasia Szerlag, MSN-FNP, APRN-FPA
Meet Your Nurse Practitioner
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Nurse Practitioners are highly trained healthcare providers who deliver many of the same services as physicians, including diagnosing illnesses, prescribing medications, and managing both acute and chronic conditions. Known for their holistic, patient-focused approach, NPs emphasize education, prevention, and building strong partnerships with their patients.
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Mrs. Szerlag holds active Nurse Practitioner licenses in Illinois, Wisconsin, Washington, Florida, Massachusetts, New York, New Jersey, North Carolina, and Pennsylvania. She currently provides services through InnerGlow Wellness Clinic to eligible patients in Illinois. Additional telehealth locations may become available in the future.
Our Services
Lifestyle Weight Loss with coaching
Primary Care with Functional Care Application
TRT and HRT Hormone Replacement
Botox and Dysport Rejuvenation
Vitamin IV Drips
B12 Injections
Nutrition
Personalized Meal Plans
We provide personalized hormone-balancing nutrition plans and prescription therapies guided by the principles of lifestyle medicine. By addressing metabolism, stress, sleep, and inflammation, we help restore hormonal balance and support lasting vitality from the inside out.
Coaching
Guidance and Support
Our lifestyle coaching sessions aim to motivate and inspire you towards a healthier lifestyle. We provide guidance on mindfulness, stress management, and physical fitness, all personalized to help you achieve your well-being goals.
Testimonials
I had an excellent experience at Inner Glow Clinic, PLLC. The nurse practitioner was incredibly thorough, kind, and understanding throughout my entire visit. She spent well over an hour with me, taking the time to carefully review my concerns, discuss my family history in detail, and answer all of my questions without ever making me feel rushed.
What stood out most was how attentive and compassionate she was. It was clear that she genuinely cared about getting a complete picture of my health and providing the best possible care. She also followed up promptly with my test results and made sure I understood everything clearly.
The level of professionalism, knowledge, and personalized attention I received was exceptional. I highly recommend Inner Glow Clinic, PLLC to anyone looking for a provider who truly listens and goes above and beyond for their patients.
Maggie~ From Google Review
Kasia is one of the best physicians I have been to. Not only is she incredibly knowledgeable, she truly cares about her patients. She takes the time to listen to your concerns and advocates for you. For the first time ever, I felt that my voice was heard and my opinion mattered. I couldn’t be more grateful to have her as my doctor. You won’t find a doctor that cares more about their patients than her.
Amber ~ From Google Review
I commend NP Katarzyna Szerlag for her professionalism, expertise, and positive attitude!
I was recently referred to Katarzyna for my annual health check-up and to connect with a wellness coach.
My experience at InnerGlow Clinic was excellent. From arrival, Katarzyna (Kasia) and the staff were welcoming and attentive. Kasia listened carefully, addressed all my questions, especially regarding weight loss and healthy lifestyle improvements, and ensured I was comfortable throughout my visit. I have never felt more at ease discussing my health concerns.
I have chosen Kasia as my wellness coach and primary doctor and will return soon to review my test results.
Angelica~ Google Review
Frequently Asked Questions
What is a Nurse Practitioner, and can I receive primary care from an NP?
Yes. Nurse Practitioners are advanced practice medical providers who diagnose conditions, order and interpret tests, prescribe medications, and manage both acute and chronic illnesses. In Illinois, Nurse Practitioners with Full Practice Authority may practice independently and provide the same high-quality primary and preventive care as physicians.
What makes InnerGlow different from other clinics?
InnerGlow Wellness Clinic combines advanced medical care with functional and lifestyle medicine in a boutique, unhurried environment. We focus on personalized, root-cause treatment plans designed to empower patients and support long-term vitality.
Do you accept insurance?
We accept select insurance plans for primary and preventive care services. Many wellness, hormone optimization, IV therapy, and aesthetic services are self-pay. Please contact our office to verify coverage and pricing. For insurance billing questions please contact our billing department at 847-604-1201