american society for parenteral and enteral nutrition american society for parenteral and enteral nutrition the american society for parenteral and enteral nutrition (aspen) is a us-based professional organization. its members include dieticians, nurses, pharmacists, physicians and scientists who are involved in providing clinical nutrition to patients. american society for parenteral and enteral nutritionabbreviationaspenfoundedjune 5, 1975 (1975-06-05)tax id no. 52-1161382legal status501(c)(3) nonprofit organizationpurposeto improve patient care by advancing the science and practice of clinical nutrition and metabolism.headquarterssilver spring, maryland, u.s.coordinates38.994894°n 77.031753°w﻿ / 38.994894; -77.031753presidentgail a. cresci, phd, rd, ld chief executive officerwanda johnson, cmp, cae, facehpsubsidiariessustain llc, aspen rhoads research foundation, 501(c)(3), national board of nutrition support certification 501(c)(6)expenses (2017)$4,722,210employees (2016) 21volunteers (2016) 400websitewww.nutritioncare.org aspen was founded on june 5, 1975. it was officially incorporated on november 30, 1976. it has almost 6,000 members. the society runs an annual meeting, the aspen nutrition science & practice conference. journals journal of parenteral and enteral nutrition nutrition in clinical practice publications the aspen adult nutrition support core curriculum, 3rd edition aspen fluids, electrolytes, and acid-base disorders handbook, second edition aspen enteral nutrition handbook, 2nd edition aspen parenteral nutrition handbook, third edition guidebook on enteral medication administration