OUR TEAM

Meet Our Medical Team at Global Pain & Spine Clinic in Niles, IL

SUCCESSFUL MEDICAL TEAM

Building a successful medical team is one of the most difficult that we face.

We do not compromise on the quality of our staff because our patients deserve the best medical care! Our secret to success is the people that work at Global Clinic.

Peter Slavin, DC

CLINICAL DIRECTOR

National Board of Chiropractic Physicians Examiners, IL Board of Professional Regulation

“I am a strong advocate of manual therapy. I want to preserve and advance manual therapy methods that we have learned and mastered from around the world.”

Amit Mehta MD, MBA

PAIN MANAGEMENT SPECIALIST

Board Certified in Anesthesiology and Pain Management and is a Diplomate of the American Board of Anesthesiology.

“The patient is always my priority. I provide interventional and multi-modal treatment options to our patients with acute and chronic pain.”

Anna Slavin

PRACTICE MANAGER

“What I love the most about my job is working with people. Compassion for patients in a diverse environment is my drive. I always put myself in our patient’s shoes and do everything to make patients and employees happy.”

Valerie Shternberg, MSPT

PHYSICAL THERAPY DIRECTOR

“I have been a Physical Therapist for 20 years. My passion for helping people is stronger than ever. My extensive experience gives me the ability to recognize the unique problems our patients experience. Nothing makes me happier than seeing patients improve and pain-free.”

Eliud Sierra

CHIROPRACTIC PHYSICIAN

Dr. Eliud Sierra is a chiropractic physician specializing in chronic pain management, sports medicine, and physical rehabilitation. He earned his Doctor of Chiropractic degree from Palmer College of Chiropractic.

Dr. Sierra provides patient-centered, evidence-based care for a wide range of musculoskeletal conditions. His experience includes injury prevention, pre- and post-operative rehabilitation, and interdisciplinary patient management. He also uses diagnostic imaging, including X-rays and MRIs, to help identify the source of pain and guide treatment. His goal is to help every patient move better, recover safely, and improve their overall quality of life.

Julianna James, NP

NURSE PRACTITIONER

Julianna is a board-certified Family Nurse Practitioner with over 20 years of healthcare experience. Since 2024, she has specialized in medical weight loss, peptide therapy, hormone replacement therapy, vitamin IV therapy, and wellness optimization, helping patients improve their energy, metabolism, and quality of life through personalized, evidence-based treatment plans.

Prior to her focus on wellness medicine, she spent more than 14 years as an FNP in a high-volume retail clinic setting, treating patients of all ages with preventive care, chronic disease management, and health education. Earlier in her career, she served as a senior nurse in the Pediatric Intensive Care Unit at Rush University Medical Center, bringing a comprehensive and safety-focused approach to everything she does. Julianna holds a Master of Science in Nursing from Rush University and is certified by the American Nurses Credentialing Center. She is passionate about helping patients feel healthier, stronger, and more confident through individualized care.