Internal Medicine Providers

Physicians

  • Delta Medix Provider - Denise Christman
    Areas of Specialty:
    Internal Medicine

    Stephen Opsasnick, MD

    Dr. Stephen Opsasnick is a native of Northeast Pennsylvania. He received a Bachelor of Science in Biology from the University of Scranton, graduating Magna Cum Laude. Dr. Opsasnick received a Medical Degree from Hahnemann University School of Medicine, Philadelphia, Pennsylvania and completed a Residency in Internal Medicine at Abington Memorial Hospital, Abington, Pennsylvania. He received Board Certification in Internal Medicine by the American Board of Internal Medicine.

    Dr. Opsasnick began his career affiliated with Abington Memorial Hospital in Abington, Pennsylvania. He returned to Scranton and established an Outpatient Practice in Moscow, Pennsylvania.

    In 2005, Dr. Opsasnick established the Hospitalist Program at Moses Taylor Hospital, Scranton where he served as Director until 2020. Dr. Opsasnick also served as Director of the Hospitalist Program at Regional Hospital of Scranton from 2013 to 2015. Dr. Opsasnick served as member Medical Executive Committee at Moses Taylor Hospital as well as the Board of Directors of Physician’s Health Alliance.

    Dr. Opsasnick is a member of the American College of Physicians, the American Society of Internal Medicine and the Society of Hospital Medicine.

    Dr. Opsasnick practices General Internal Medicine in the Delta Medix Division of Medicine.

  • Delta Medix Provider - Denise Christman
    Areas of Specialty:
    Internal Medicine

    Karen Paczkowski, MD

    Dr. Karen Paczkowski is a native of Northeast Pennsylvania. Dr. Paczkowski graduated Cum Laude from Marywood University with a Bachelor of Science Degree in Chemistry. She received her Medical Degree from the Medical College of Pennsylvania, Philadelphia, PA, and completed a Residency in Internal Medicine at Geisinger Medical Center, Danville, PA.

    Dr. Paczkowski completed a Fellowship in Cardiology at Geisinger Medical Center in Danville. She is Board Certified by the American Board of Internal Medicine and received Subspecialty Certification in Cardiovascular Disease.

    Dr. Paczkowski has many years’ experience in the Practice of Cardiology at Geisinger Health System in Danville, PA. She served as Medical Director of the Cardiac Laboratories and the Cardiac Rehabilitation Program at Lewistown Hospital.

    Upon returning to Scranton, Dr. Paczkowski joined Physicians Health Alliance where she practiced outpatient Internal Medicine and Cardiology. Most recently, Dr. Paczkowski was a Hospitalist at Moses Taylor Hospital.

    Dr. Paczkowski practices General Internal Medicine in the Delta Medix Division of Medicine.

  • Delta Medix Provider - Denise Christman
    Areas of Specialty:
    Internal Medicine

    Melissa Colarossi, CRNP

    Melissa Colarossi, CRNP, graduated from Mansfield University in 2005 with a Bachelor of Science degree. She graduated from the University of Scranton in 2019 with her Masters in Science degree in Nursing with a specialty as a Nurse Practitioner.

    Melissa is nationally certified through American Nurses Credentialing Center.

    Prior to joining the Delta Medix Division of Medicine in 2020, Melissa worked as Registered Nurse for over 10 years in multiple disciplines. She has also been an Adjunct Nursing Instructor for nursing students at the University of Scranton.

    Melissa practices in the Delta Medix Division of Medicine.