Our Providers
David A. Lindenberg, D.O.
David A. Lindenberg, D.O. is the founder and Chief Executive Officer of NorCal Pain Treatment Center. Dr. Lindenberg earned his undergraduate degree from the University of California at Davis, where he majored in microbiology and minored in music. He obtained a Master of Science Degree in biomedical laboratory science from San Francisco State University, where he also competed in track and field and was named an Academic All-American. He obtained his Doctorate of Osteopathic Medicine degree from Des Moines University in Des Moines, Iowa. Following an internship in internal medicine at San Joaquin General Hospital he went on to complete a residency in Physical Medicine and Rehabilitation at the University of Minnesota, in Minneapolis, where he served as Chief Resident. He completed his Fellowship Pain Medicine at the University of Washington Department of Anesthesia in Seattle, Washington.
Dr. Lindenberg is board certified by the American Board of Physical Medicine and Rehabilitation – primary, and subspecialty of pain medicine - and by the American Board of Pain Medicine.
As a Stockton native, Dr. Lindenberg, along with his wife, Brenda, are proud to call the Central Valley their home, and they established NorCal Pain Treatment Center in 2019 in order to serve the needs of the greater community through a multidisciplinary approach to pain management.
Tyler Nickle, D.O.
Dr. Nickle completed his undergraduate degree in neuroscience at Bringham Young University, where he also played for the university hockey team. He attended A.T. Still University Kirksville College of Osteopathic Medicine to attain his medical degree and Master of Biomedical Science degree. He then completed his internship in psychiatry at the University of Arizona in Tucson. According to Dr. Nickle, it was during that time, that he developed a passion for musculoskeletal medicine, which led him to complete his residency in occupational medicine and his Master of Public Health degree at the University of Cincinnati. Occupational medicine focuses on maximizing the health and wellbeing of the workforce through preventative measures, medical treatment, and functional rehabilitation.
Dr. Nickle has a passion for helping patients reach their greatest potential by managing pain and musculoskeletal disorders. As an osteopathic physician, his approach includes treating the whole person and partnering with each patient in their health maintenance. Dr. Nickle completed his interventional pain fellowship at NorCal Pain Treatment Center.
Patrick Akin, D.O.
Dr. Patrick Akin, a Modesto native, is a Board-Certified Doctor of Osteopathic Medicine (DO) with extensive training and experience in family medicine, sports medicine, integrative medicine, and pain management. With a holistic, patient-centered approach, Dr. Akin emphasizes treating the whole person—considering not just physical health, but also lifestyle, emotional well-being, and long-term wellness.
After earning his Doctor of Osteopathic Medicine degree from Liberty University, Dr. Akin completed a residency in Family Medicine at Research Medical Center in Kansas City, Missouri, providing comprehensive care for patients of all ages and addressing a wide variety of acute and chronic conditions. This strong foundation in family medicine has enabled Dr. Akin to build long-term, trusting relationships with patients, focusing on prevention, health maintenance, and disease management. During his Family Medicine Residency, he also completed a certificate in Integrative Medicine through the University of Arizona. With training in integrative medicine, Dr. Akin blends the best of traditional medical approaches with alternative therapies to support the body’s natural healing processes. Whether through nutrition counseling, stress management techniques, or mind-body therapies, Dr. Akin helps patients achieve balance, improve overall health, and address the root causes of illness.
Dr. Akin then went on to complete a Sports Medicine Fellowship in North Carolina. Specializing in sports medicine, Dr. Akin works with athletes across all levels to prevent, diagnose, and treat sports-related injuries. With a keen interest in musculoskeletal health, he incorporates advanced techniques like regenerative medicine, physical therapy, and osteopathic manipulative treatment (OMT) to enhance recovery and performance.
Dr. Akin’s comprehensive approach to his patients, allows him to provide personalized, compassionate care tailored to each patient’s unique needs for their pain management. Whether managing a chronic condition, recovering from an injury, or seeking a healthier lifestyle, patients can expect a collaborative and well-rounded approach to their health. He looks forward to treating his patients of his hometown and creating a community.
Steven Peretiatko, M.D.
Dr. Steven Peretiatko, MD, is a Board Certified specialist in Physical Medicine and Rehabilitation with a passion for helping his patients reduce pain, regain function, and improve their quality of life.
As a Florida native, he attended the University of Florida and earned his Bachelor's degree in Biology graduating with honors. He attended medical school at the University of South Florida Morsani College of Medicine, where he developed his passion for musculoskeletal medicine and functional rehabilitation.
Dr. Peretiatko completed his residency in Physical Medicine and Rehabilitation at Virginia Commonwealth University, gaining expertise in Pain Medicine, Sports Medicine, and Rehabilitation Medicine. He is currently an Interventional Pain Management Fellow at NorCal Pain Treatment Center, where he continues to expand his skill set.
Outside of his professional life, Dr. Peretiatko enjoys music, fitness, cuisine, travel, and spending time with his family.
Joe Frensley, MSN, APRN-C
Born in Western Kentucky, Joe Frensley knew early on that he wanted to pursue a career in healthcare with the goal of improving the health of those in his community. Joe earned an Associate of Science degree from Paducah Community College and went on to continue his studies at Murray State University, where he earned a Bachelor of Science in Nursing in 2001.
Joe worked for many years as a licensed Registered Nurse in Illinois and Kentucky where he gained experience in acute care, medical-surgical, and pediatric specialties. Joe has held several leadership positions. He was the director and case manager of a community home health organization, where he led a multidisciplinary team of allied health members. Later, Joe shifted his focus to an administrative role coordinating the transition of patients to short-term rehabilitation and long-term nursing care. Joe was a member of the Board of Directors of the American Red Cross Western Kentucky Chapter, and he was on the Steering Committee for Heart USA, a non-profit organization which helped underprivileged patients receive prescription medications for free through drug company programs.
Joe completed the Family Nurse Practitioner program at Walden University in May 2018. He passed the American Association of Nurse Practitioners Certification Exam and he obtained his license to practice as a board-certified Family Advanced Practice Registered Nurse. Joe’s first practice, as a nurse practitioner, was in pain management under the tutelage of Dr. David Lindenberg, when he was still living in Kentucky. Recognizing the need for a pain management nurse practitioner, Joe and his family made the decision to move from Kentucky to Turlock, California to join Dr. Lindenberg’s newly established practice, NorCal Pain Treatment Center. Joe’s motivation to move across the country stems from his passion for helping to improve the lives of those who do not have adequate access to quality pain management services.
Joe is now a resident of Stanislaus County, along with his wife of 17 years, Allis, and two of his three children, Evan and Alec. He is honored and grateful for the opportunity to serve the people of Northern California. In his free time Joe enjoys outdoor grilling, playing the bass guitar, and tending to his pepper garden for his homemade hot sauces.
Harjeet Randhawa, MSN, NP-C
Harjeet Randhawa, MSN, NP-C, is a board-certified Family Nurse Practitioner through the American Association of Nurse Practitioners. She is a native to Turlock. She earned her Bachelor of Science in Nursing from California State University Stanislaus. She obtained her Master of Science in Nursing from Charles Drew University of Medicine and Science and she is the recipient of an outstanding academic excellence award.
Harjeet has been afforded the opportunity to care for patients in all stages of life and has clinical experience in pediatrics, primary adult care, and geriatrics. She has multiple years of family medicine experience at a federally qualified health center in Southern California.
Harjeet is multi-lingual, fluent in English and Punjabi. She loves traveling, hiking, the beach, fitness, and spending time with family and friends.
James Carroll, NP-C
James has been in the health care field for over 12 years with experience in emergency medicine and critical care. James rotated with NorCal Pain Treatment Center as part of his Nurse Practitioner program and began working for our practice as a sedation nurse. He completed the Nurse Practitioner Program at Cal State Stanislaus University in the Fall of 2021. When asked, James replied that he fell in love with the culture of NorCal Pain Treatment Center. “When I first met Dr. Lindenberg, he treated me as an equal, and at that moment, I knew this would be my new home.” James’s interest in pain management stems from his experiences in emergency medicine and how competent care can change lives
Robin FrEDEKING, NP-C
Hi, I’m Robin! I came to the Norcal Pain Treatment Center family after practicing emergency and urgent care medicine for a few of the Stanford Healthcare facilities, which is also where I completed the majority of my practicum training during graduate school. My practicum training also included internal medicine and primary care. I am a Family Nurse Practitioner and I completed my undergraduate and graduate education right here in town at California State University, Stanislaus. I am excited to be working in the Central Valley region again, serving the needs of our community in a specialty that can help people live more functional, quality lives. Before I became a provider, I worked in many different fields as a nurse throughout California and Nevada, including the emergency specialty at University Medical Center in Las Vegas, and as a critical care transport nurse in the Central Valley. In my free time, I enjoy traveling, motorcycling, and listening to vinyl records.
Tyler riddick, NP-C
Tyler Riddick is dual certified as a Family and Emergency Nurse Practitioner. He has over a decade of experience in healthcare: two years as an Emergency Nurse Practitioner, seven years as an RN in the Emergency Department, and three years as a Firefighter/EMT.
His educational experience includes a Psychology degree from Fresno State, a Nursing degree from Merced College, and a Master's in Nursing from CSU Stanislaus—where he earned the Dean's Medal of Excellence. In addition to his academic pursuits, he competed in four years of intercollegiate baseball, instilling values of discipline and teamwork.
Beyond his professional life, he is an enthusiast of outdoor activities, including baseball, tennis, swimming, cycling, hiking, and camping. He is eager to bring his passion for patient care, coupled with a diverse skill set, to contribute positively to the field of pain management