Regency Pain & Therapy Institute

Pain Management Physicians, Neuromusculoskeletal Medicine Specialists and Physical Therapy Specialists located in Mansfield, TX

    1. "The best staff anywhere and more pain relief than I have received in 16 years."

    2. Verified Patient Google

    1. "Everyone who I've encountered in the office is very kind and caring."

    2. Philip Wiley Google

    1. "I always leave feeling better. I couldn't ask for better therapists."

    2. Jennifer B. Google

    1. "Everyone is friendly as well as knowledgeable...The doctors are excellent as well."

    2. Doris T. Google


Welcome to our practice

Regency Pain & Therapy Institute is an interventional pain management, neuromusculoskeletal medicine, sports medicine and osteopathic manipulative medicine practice located in the Dallas-Fort Worth, TX area.

The practice recently completed construction on a beautiful new 20,000 square-foot, state-of-the-art facility, conveniently located in the heart of Mansfield. The larger facility allows for all services to be under one roof and provides patients with easy access and convenient parking, contemporary design and function, well-appointed waiting areas, large spacious exam rooms; and state-of-the-art amenities; that include a high-end physical therapy facility, a new procedure suite that will accommodate less invasive procedures, a large multi-functional classroom, and the nationally recognized Pritikin Intensive Cardiac Rehab (ICR) program.


Regency Pain & Therapy Institute offers cutting-edge pain management techniques and technology, with the patient at the center of everything we do. The focus is always on decreasing a patient’s pain while increasing their productivity, minimizing medication use, maximizing physical activity, and improving quality of life. You will also experience doctors who strive to be as conservative as possible and only progress to more interventional treatments, as needed.

The team at Regency Pain & Therapy Institute takes a whole-body approach to patient care. Instead of focusing on treating a few symptoms, the doctors at Regency Pain & Therapy Institute focus on diagnosing your pain and finding the best, most meaningful way to reduce your pain and restore function. Some of the conditions they routinely treat include chronic pain, fibromyalgia, sciatica, neck and back pain, abdominal pain, auto accident injuries, scoliosis, and neuropathy.


A frequently used conservative approach to treating pain is Physical Therapy. Physical therapy is a non-invasive discipline that helps individuals develop, maintain and restore maximum body movement and physical function. Physical therapy can help patients recover from an injury, relieve pain, prevent future injury or deal with a chronic condition. It can be applied at any age or stage of life.

The ultimate goal of physical therapy is to improve health and quality of life. The physical therapists at Regency Pain & Therapy Institute have undergone years of highly specialized training so they can properly evaluate and assess your physical limitations and then design an exercise program that improves your overall function and health. The team uses a variety of techniques to restore function; including active, passive and strengthening exercises.

No matter what type of pain you’re experiencing, the doctors and therapists at Regency Pain & Therapy Institute can help and want to work with you. To schedule an appointment, please call the Regency office at 817-419-6111.

Goals of Our Treatments


Decrease Pain

Medication Use

Improve Quality
of Life


Maximize Physical Activity


Trigger Point Injections
Facet Injections
Spinal Nerve Blocks
Rhizotomy/Nerve Ablation

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Lysis of Adhesions
Sympathetic Blocks
Peripheral Nerve Blocks
Joint Injections

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Viscosupplementation (gel) knee injections
Spinal Cord Stimulators
Peripheral Nerve Stimulators

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  • Review of Dr. Butler

    I can only speak about Dr. Butler's staff: Dr. Butler is great. He goes over and beyond. If you are looking for just a script writer he isn't the one for you. His NP is super awesome. The rest of his staff is wonderful also. They treat you like they've known you your entire life. Amazing.

    Review of Dr. Dirnberger

    I would like to thank Doctor Mark Dirnberger, DO (Pain Management) of Regency Pain & Therapy Institute. My mother (81 years old) has suffered with pain for many years due to scoliosis/kyphosis, Doctor Dirnberger listened and help her with her consist pain (a level 10) that never stopped hurting for many years no matter what she took for the pain. I cannot tell you how much her life has changed now since I started taking her to Doctor Dirnberger three months ago, she now is able to live a much better life without being in pain 24 hours a day.

  • Review of Dr. Butler

    I have been in the hands of Dr. Butler and he is by far the best doctor I have seen. Very nice and professional. I would highly recommend Regency Pain & Therapy Institute.

    Review of The Practice

    The best staff anywhere and more pain relief than I have received in 16 years. I highly recommend!

  • Review of The Practice

    I am well treated here. Everyone is friendly as well as knowledgeable. The therapy is better than other places I've been or heard about. Therapy is not supposed to hurt, according to them. And it works. The doctors are excellent as well.

    Review of Dr. Dirnberger

    I have been under the care of Doctor Dirnberger for over a period of 14 years. I ruptured my L4/L5 Lower Spin Disc and injured my right hip. Through the many years of wonderful treatment I am happy to say that I am able to live a normal life and do everything I used to do prior to my injuries. The staff at Regency Pain & Therapy Institute is nothing but professional. I am extremely great full to Dr. Dirnberger and his Staff for allowing me to live and maintain a pain-free lifestyle.

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Some insurance companies require a referral or a pre-certification for treatment. It is your responsibility to verify with your carrier what, if any, information is needed prior to making your appointment. Co-pays are due at time of service. If you have additional questions regarding insurances, please have your statement and account number ready when calling.

Blue Cross Blue Shield
United Healthcare

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Words from our patients

  • Google

    "All of the staff at the clinic are wonderful, caring people. I feel free trusting them with my concerns and trust them with my treatment."

    David B.
  • Google

    "Dr. Butler is great. He goes over and beyond...The rest of his staff is wonderful also. They treat you like they've known you your entire life. It's amazing."

    Dee E.
  • Google

    "I have been in the hands of Dr. Butler and he is by far the best doctor I have seen. He's very nice and professional."

    Verified Patient
  • Google

    "The staff at Regency Pain & Therapy Institute is nothing but professional. I'm extremely grateful to Dr. Dirnberger and his staff."

    Alexander C.


Monday8:00 am - 6:00 pm
Tuesday8:00 am to 6:00 pm
Wednesday8:00 am to 6:00 pm
Thursday8:00 am to 6:00 pm
Friday8:00 am to 2:00 pm

Get in touch

74 Regency Parkway
Mansfield, TX 76063

Regency Pain: Fax (817) 419-9582

Regency Physical Therapy & Cardia Rehab: Fax (817) 701-4902