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Get to Know ThedaCare’s Newest Providers

Last updated: July 2, 2025

ThedaCare is pleased to introduce our newest providers. Here, we learn what inspires them to improve the health and well-being of our patients, and empower them to live their unique, best lives.

Cynthia Griffin, DO

Emergency Medicine Physician

“I treat every patient with the same respect, compassion and dedication I would my own family. Every patient deserves the highest level of care and expertise, just as I would expect for those closest to me.”

Christina Nussbaum, MD

Emergency Medicine Physician

“I prioritize clear communication and actively involve patients in their care. I explain in detail the reasoning behind tests and care decisions, encouraging patients to ask questions and take an active role in shaping their treatment plans.”

Stefanie O’Sullivan, APNP

Nurse Practitioner, Family Medicine, ThedaCare Physicians-Waupaca

“My approach to care is rooted in partnership, collaborating closely with patients and their families to develop personalized, holistic treatment plans that prioritize the patient’s best interest.”

Melinda Paffenroth, APNP

Nurse Practitioner, Wound and Ostomy Care, ThedaCare Medical Center-Neenah

“I care for and empower individuals to actively participate in their health journey. My aim is to equip patients with knowledge about their conditions, fostering open communication and trust. Together, we create personalized care plans that align with their goals.”

Mara Veltus, APNP

Nurse Practitioner, Walk-in Orthopedics and Sports Medicine, ThedaCare Orthopedic Care

“I support and guide patients through recovery, equipping them with the necessary resources to regain their regular activities. My goal is to empower patients with the tools for lasting health and peak performance.”

Tags: July New Providers New Providers ThedaCare New Providers

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