Ratan Banik, MD, PhD

Assistant Professor, Department of Anesthesiology

Ratan Banik

Contact Info


Fax 612-626-2363

Office Address:
B515 Mayo Memorial Building
420 Delaware Street SE
Minneapolis, MN 55455
MMC 294 Mayo

Mailing Address:
Anesthesiology Administration
MMC 294 Mayo
8294A (Campus Delivery Code)
420 Delaware St SE
Minneapolis, MN 55455

Administrative Assistant Name
Sydney Lusardo

Administrative Phone

Administrative Email

Assistant Professor, Department of Anesthesiology

MD, Dhaka University, Bangladesh

Residency in Anesthesiology, Albert Einstein College of Medicine and Montefiore Medical Center

Postdoctoral Research Fellowship, University of Iowa Hospitals & Clinics

Fellowship in Pain, MD Anderson Cancer Center

PhD, Nagoya University, Japan

Internship in General Surgery, Drexel College of Medicine


Schedule an appointment with Dr. Banik at the Clinic for Comprehensive Pain Management by calling 612-301-1425.


Pain Medicine

Professional Associations

  • American Society of Anesthesiologists
  • Basic science committee member, American Association for pain and neuroscience
  • Website co-liaison, Pain Education special interest group, American Society of Regional Anesthesia and Pain Medicine
  • United States Association for the study of pain
  • Membership committee member, Minnesota Society of Anesthesiology
  • Abstract review committee member, American Society of Anesthesiology


Research Summary/Interests

My research in the last 15 years has extensively used a rat model of postoperative pain following surgical incision, which includes behavioral phenotypes, peripheral nociceptor sensitization, and pharmacologic modulation. To understand genomic effects associated pain behaviors after surgery, my lab performed a transcriptomic analysis of the rat dorsal root ganglia using state-of-the-art next-generation sequencing. The approach permits the assessment of all genes expressed in the primary afferent neurons, uncovering gene dysregulation and respective molecular networks critical for the development of postoperative pain. Using this method, we found gene expression changes in samples from animals after surgery. Using a knowledge-based Ingenuity Pathway Analysis, which annotates genes into functional network based on experimental database, we identified several gene networks in the development of postoperative pain behaviors. Our ongoing studies are aimed at identifying a novel pharmacologic target with high therapeutic potential in postoperative pain. 

Research Funding Grants

  • Age Differences in Postoperative Pain Characteristics, Location, and
    Severity: A Pilot and Feasibility Study. NATIONAL INSTITUTES OF HEALTH November 10, 2020
  • Effects of aging on animal models of postoperative pain. NATIONAL INSTITUTES OF HEALTH June 11, 2020
  • Effects of aging on postoperative pain. NATIONAL INSTITUTES OF HEALTH February 13, 2020



  1. Banik, R. K. (Corresponding Author), McDaniel, E., DeWeerth, J. C., & Sembrano, J. N. (2021). Iliocostal Friction Syndrome Due to Hair-Pin Shaped Thoracic Kyphosis. Pain Medicine.
  2. Goel, V., Patwardhan, A. M., Ibrahim, M., Yang, Y., Sivanesan, E., Banik, R. K., Shannon, C., & Shankar, H. (2021). Industry Payments to Pain Medicine Physicians: An Analysis of the Centers for Medicare and Medicaid Services Open Payments Program. Pain Medicine.
  3. Karuppiah, S., Prielipp, R., Banik, R. K. (Corresponding Author), & others (2020). Anesthetic consideration for patients with micra leadless pacemaker. Annals of Cardiac Anesthesia, 23(4), 493.
  4. Nadar, V., & Banik, R. K. (Corresponding Author) (2020). Anesthetic Management for Emergent Repair of Tracheoinnominate Fistula. Case Reports in Anesthesiology, 2020.
  5. Banik, R. K. (Corresponding Author), & Engle, M. P. (2020). Ziconotide for Management of Cancer Pain Refractory to Pharmacotherapy: An Update. Pain Medicine, 21(12), 3253--3259.
  6. Banik, R. K. (Corresponding Author), & Chen Chen, C. C. (2019). Spinal epidural hematoma after interlaminar cervical epidural steroid injection. Anesthesiology, 131(6), 1342--1343.

Other Presentations

  1. Banik, R. K. "Age-related Differences In The Postoperative Pain After Intra-abdominal Surgery: Single Center Retrospective Analyses Of 2,600 Patients", ASA 2020 Annual meeting, American Society of Anesthesiologist. (2020). Presentation/Talk.
  2. Banik, R. K. "Reverse translation: From bedside to the bench", Grand round presentation: Dept of Anesthesiology. (September 2020). Lecture.


Board Certifications

  • Anesthesiology
  • Pain Medicine

Clinical Interests

My clinical interests are to help patients achieve functional restoration and improved quality of life through an effective multidisciplinary approach to pain management.