New Search Jacob Fredrick Collen M.D. (240) 566-3644 Department Medicine Specialty Critical Care Primary Office Address: FHMG - Sleep Medicine 7211 Bank Ct Ste 200 Frederick, MD 21703 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