Jonathan Purnell, MD

  • Degrees:
    MD: Oregon Health & Science University, Portland, 1986
  • Residency:
    Internal Medicine: University of Vermont, Burlington, 1989

  • Fellowship:
    Endocrinology: University of Washington, Seattle, 1996


  • Biosketch:
    Dr. Purnell's clinical interests include endocrinology, metabolism, obesity, diabetes and hyperlipidema. He received his medical degree from OHSU in 1986, and completed his residency training at the University of Vermont in Burlington. He completed his Endocrinology fellowship at the University of Washington in Seattle. Dr. Purnell is board certified in Internal Medicine and in Endocrinology.
  • Recent Publications:

    Cummings, D.E., Weigle, D. S. Frayo, R.S., Breen, P.A., Ma, M. K., Dellinger, E.P., Purnell, J.Q., Human plasma ghrelin levels after diet induced weight loss or gastric bypass surgery. N Engl J Med. 346:1623-30, 2002.

    Cummings, DE, Clement, K, Purnell, JQ, Frayo, RS, Schwartz, MW, Basdevant, A, Weigle, DS. Elevated plasma ghrelin levels in Prader-Willi Syndrome. Nat Med. 8:643-4, 2002.

    Haqq, AM, Farooqi, SI, O'Rahilly, S, Stadler, DD, Rosenfeld, RG, Pratt, KL, LaFranchi, SH, Purnell, JQ. Serum Ghrelin levels are inversely correlated with body mass index, age and insulin concentrations in normal children and are markedly increased in Prader-Willi Syndrome. J Clin Endocrinol Metab. 88:174-78, 2003.

    Weigle, DS, Cummings, DE, Newby, PD, Breen, PA, Frayo, RS, Matthys, CC, Callahan, HS, Purnell, JQ. A low-fat diet causes decreased body weight and 24-hour plasma leptin levels without a compensatory increase in ghrelin levels or appetite in humans. J Clin Endocrinol Metab. 88:1577-86, 2003.

    Haqq, AM, Stadler, DD, Jackson, RH, Rosenfeld, RG, Purnell, JQ, Franchi, S. Effects of growth hormone on pulmonary function, sleep quality, behavior, cognition, growth velocity, body composition, and resting energy expenditure in Prader-Willi Syndrome. J Clin Endocrinol Metab. 88:2206-12, 2003.

  • All Publications