New Search Jacob Fredrick Collen M.D. (240) 566-3644 Specialty Critical Care Department Medicine Additional Languages Spoken English Primary Office Address: 400 West 7th Street Frederick, MD 21701 Phone: (240) 566-3644 Recommend this Physician Get Directions Education Medical School - Uniformed Services University of the Health Sciences Internship - Brooke Army Medical Center Residency - Walter Reed Army Medical Center Fellowship - National Capital Consortium and Walter Reed National Military Medical Center Fellowship - Walter Reed National Military Medical Center Board Certifications American Board of Internal Medicine American Board of Internal Medicine American Board of Internal Medicine American Board of Internal Medicine