Associated Kidney Specialists of the North Bay delivers exceptional, patient-centered nephrology care — driven by expertise, compassion, and deep community roots. Founded in 2015, our board-certified nephrologists provide comprehensive kidney care for patients from Napa, Vallejo, Clearlake, and the surrounding North Bay communities across our three office locations.
Whether you are managing chronic kidney disease, navigating dialysis, or preparing for a transplant, our dedicated team of three full-time nephrologists is here to guide you every step of the way with evidence-based care and genuine compassion.
Associated Kidney Specialists of the North Bay (AKSNB) was founded in 2015 by Dr. Nagarathna Manjappa with a clear and unwavering vision: to provide exceptional, patient-centered kidney care in the communities of Northern California's North Bay.
Over the past decade, the practice has grown steadily. We proudly serve patients from Napa, Vallejo, Clearlake, and the surrounding North Bay communities, seeing patients at three convenient office locations. Our reputation has been built on a foundation of clinical excellence, accessibility, and genuine compassion for every patient we treat.
At AKSNB, we believe that outstanding kidney care begins with listening. Each patient receives a personalized care plan grounded in the latest nephrology research, evidence-based guidelines from nationally recognized medical societies, and the individual needs and goals of the person in front of us. Our three dedicated full-time nephrologists work collaboratively to ensure that every patient receives timely consultations and seamless follow-up in both inpatient and outpatient settings.
Living with kidney disease affects every aspect of your life — and we understand that deeply. At AKSNB, we take a whole-person approach to nephrology care, addressing not only the clinical dimensions of your condition but also the emotional, logistical, and quality-of-life factors that matter to you and your family.
Our physicians stay at the forefront of nephrology research, incorporating the latest evidence-based guidelines from the National Kidney Foundation, KDIGO, and the American Society of Nephrology into every treatment plan. Whether you need management of early-stage CKD or complex dialysis coordination, you'll receive care that reflects the highest standards in kidney medicine.
We are proud to serve the diverse communities of Napa, Solano, Sonoma, and Lake counties — regions that are home to some of California's most vibrant and growing populations. Our multilingual team is committed to ensuring that language is never a barrier to receiving excellent care.
Personalized, evidence-based treatment plans
Prompt consultations — inpatient and outpatient
Collaborative care with your primary care team
Pre-dialysis education and RRT planning
Kidney transplant evaluation & post-transplant care
Choosing a nephrologist is one of the most important healthcare decisions you can make. At AKSNB, we've earned the trust of thousands of patients across Northern California through consistent excellence, transparency, and genuine care.
Our practice model is intentionally designed to be accessible and responsive — we offer prompt appointments, hospital consultations, and direct communication with your specialist team. You will never feel like a number here.
Prompt Consultations
Fast access when you need it most
Hospital Coverage
Inpatient & outpatient seamlessly
Multi-County Reach
Napa, Solano, Sonoma, Lake
Accepting New Patients
Referrals welcome at all times
"United by Community"
Serving Napa, Solano, Sonoma & Lake Counties since 2015
Patient Resources
Frequently Asked Questions
Find answers to common questions about our practice, appointments, and kidney care.
Start Your Kidney Health Journey Today
Whether you have been newly referred, are managing a long-term kidney condition, or simply want a specialist's opinion, the AKSNB team is ready to partner with you.
We are currently accepting new patients across Napa, Solano, Sonoma, and Lake counties. Call our office or submit a request online — we'll be in touch promptly.
