Expert Care, Warm Hearts

John P. Stelmach, MD

Dr. John P. Stelmach is a board-certified orthopedic surgeon with over 33 years of clinical experience. After decades of witnessing firsthand how obesity impacts surgical outcomes, joint health, and quality of life, he founded Keystone Wellness & Weight Loss Center to give patients a safe, medically supervised path to better health.

What began as a pre-surgical weight loss program quickly became something much bigger. Dr. Stelmach recognized that provider-guided weight management — particularly with GLP-1 therapy — could transform lives far beyond the operating room. His personal journey with GLP-1 medications, in which he lost over 42 pounds, deepened his commitment to offering this care to the community.

Dr. Stelmach leads the medical direction of the center, ensuring every patient receives evidence-based, compassionate care tailored to their individual needs.

Paul Marr, MD

Dr. Paul Marr brings a distinguished level of medical expertise and community dedication to the Keystone Wellness & Weight Loss Center team. As a Board Certified Sports Medicine Physician, Dr. Marr has built a respected career caring for athletes at every level — from local high school competitors to professional players.

Dr. Marr currently serves as the Team Physician for the Reading Fightin Phils and is a Consulting Physician for the Philadelphia Phillies organization, bringing elite-level sports medicine experience to everything he does. He is also deeply committed to the local community, providing sports medicine support to area high schools throughout the region.

In his role at Keystone, Dr. Marr serves as a Medical Advisor and Co-Owner, lending his clinical expertise and physician oversight to support our team and our mission of whole-body wellness. Dr. Marr practices with Commonwealth Orthopaedic Associates (COA), where he continues to serve patients across the greater Reading area.

Claire Schaeffer, DNP

Claire Schaeffer, DNP, brings advanced clinical training and a deep passion for patient-centered care to Keystone Wellness & Weight Loss Center. As a Doctor of Nursing Practice, Claire provides comprehensive evaluations, manages GLP-1 therapy, and works closely with patients to develop personalized treatment plans.

Claire believes that true wellness goes beyond the number on the scale. She takes the time to understand each patient’s unique health history, lifestyle, and goals — ensuring that every visit feels supportive, thorough, and empowering.

Rebecca Neri, CRNP

Rebecca Neri, CRNP, joins the Keystone Wellness & Weight Loss Center team on a per diem basis, lending her clinical expertise to support our patients whenever we need an extra hand. Her primary role is as a full-time family practice Nurse Practitioner at Penn State Health St. Joseph in Exeter, where she cares for patients of all ages with the same warmth and dedication she brings to Keystone.

Rebecca has a true passion for helping people — and it shows from the moment she walks through the door. If you catch her at the office, you’ll always find her smiling, and that easy kindness is exactly why we’re so grateful to have her with us. We feel lucky every time her schedule lines up with ours.

Lauren Douglas, CRNP

Lauren Douglas, CRNP, joins the Keystone Wellness & Weight Loss Center team on a per diem basis, bringing a depth of clinical experience that is a real asset to our patients. Her primary role is as a full-time Nephrology Nurse Practitioner at Reading Nephrology Associates, where she cares for patients with kidney disease and complex medical histories every day.

That nephrology background is a meaningful bonus for our team — it gives us additional clinical perspective when working with patients who have more complex health pictures, especially around kidney function, blood pressure, and metabolic health. Lauren also has a genuine love for educating patients on GLP-1 therapy, walking them through how the medication works, what to expect, and how to get the most out of their journey. We’re grateful to have her expertise on the days she’s with us.

Nathan Lawyer, PA-C

Nathan Lawyer, PA-C, joins Keystone Wellness & Weight Loss Center as an aesthetic injector. His primary role is as an orthopaedic and sports medicine physician assistant at Commonwealth Orthopaedic Associates.

That background in orthopaedics has given Nathan a strong foundation in anatomy, precision, and injection technique — skills that carry directly into the treatment room. At Keystone, he provides neuromodulators including Botox, Daxxify, and Jeuveau, in addition to dermal fillers.

Nathan believes aesthetics is for everyone. His goal is simple: to perform safe, effective treatments that enhance your natural structure and features. Whether you’re new to aesthetic procedures or already have an established routine, he’d love to be a part of your journey.

Kendra Qualgia, RN

Kendra Qualgia, RN, is a registered nurse injector whose background in clinical nursing shapes the way she approaches aesthetics — with a steady hand, a deep respect for facial anatomy, and a commitment to patient safety at every step. At Keystone Wellness, Kendra performs neurotoxin injections (Botox, Daxxify, Jeuveau), dermal fillers, microneedling, PRF treatments, and EZ Gel.

Kendra is also certified in Medical Botox for TMJ and facial pain, allowing her to treat patients who struggle with jaw tension, clenching, and chronic facial discomfort — not just those seeking cosmetic results. It is a skill set that lets her bridge the gap between aesthetic and therapeutic care.

Kendra believes the best results are the ones no one can point to. She listens closely, plans conservatively, and tailors every treatment to a patient’s features and goals rather than a trend — building the kind of trust that keeps patients coming back to her year after year.

Kiersten Kline, RN

Kiersten Kline, RN, brings more than 15 years of clinical nursing experience to Keystone Wellness & Weight Loss Center, including years spent in emergency nursing before moving into aesthetics. That foundation — built in a setting where sharp assessment skills and a steady hand matter most — shapes the careful, safety-first way she approaches every treatment.

At Keystone, Kiersten performs neuromodulator injections (Botox, Daxxify, Jeuveau) and dermal fillers, provides professional skincare treatments, and supports patients through our wellness therapies. She is also currently pursuing her Family Nurse Practitioner degree, continuing to deepen the clinical expertise she brings to the treatment room every day.

Kiersten believes no two faces — and no two goals — are the same. She takes the time to understand what each patient is hoping for, builds a plan around their features rather than a formula, and walks them through every step so they feel confident in the process. Her goal is simple: to help each patient look and feel their very best.

Shanna Moyer

Shanna Moyer is the heart and soul behind the day-to-day operations of Keystone Wellness & Weight Loss Center. As both the center’s Manager and a Certified Health and Wellness Coach, Shanna wears many hats — from coordinating patient care to providing one-on-one nutrition coaching and wellness support.

Shanna’s own personal journey with GLP-1 therapy (documented in her blog post "From Frustration to Freedom") gives her a unique perspective that resonates deeply with patients. She understands the frustration of doing everything right and still feeling stuck — and she’s passionate about helping others find the tools and support they need to break through.

Jaime

Jaime is often the first smiling face you’ll see when you walk through our doors, and that warmth is no act. Before joining our team, Jaime was a client herself, and she fell in love with the atmosphere and vibe of Keystone so completely that she knew she wanted to be part of it.

That genuine connection to what we do shows up in everything she does. As our Wellness Center Coordinator, Jaime keeps the day-to-day running smoothly and makes sure every client and patient feels welcomed, cared for, and right at home from the moment they arrive. As our Co-Content Creator, she helps share the Keystone story and spirit with the community we love serving.

Jaime’s sweet personality and genuine love for this work overflow into every interaction — and our patients feel it. She’s the kind of person who makes you feel like you belong here, because to her, you do.

Kathryn Marr, DPT

Dr. Kathryn Marr, DPT, brings her extensive training as a Doctor of Physical Therapy to Simply Pilates, located inside Keystone Wellness & Weight Loss Center. Kathryn specializes in private sessions, duo fitness, and post-rehab Pilates — helping patients recover from surgery, build core strength, and improve mobility in a safe, supportive environment.

Her clinical background means she understands the body at a deeper level than a typical fitness instructor, making her an ideal guide for patients who need movement that’s both effective and therapeutic.