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Henry P. Parkman, MD


Henry P. Parkman, MD


Professor, Medicine

Director, GI Motility Laboratory

Telephone:  215-707-9900

FAX: 215-707-2684

Email: henryp@temple.edu


Department of Medicine, Section of Gastroenterology


Educational Background:


AB, Harvard University


MD, Case Western Reserve University


Internship and Residency, Johns Hopkins Hospital


GI Fellowship, Hospital of the University of Pennsylvania


GI Research Fellowship, Mayo Clinic Medical School


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  • Internal Medicine, 1985
  • Gastroenterology, 1987

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clinical Interests:


  • Motility disorders of the esophagus, stomach, small intestine and colon
  • Clinical disorders including:

    Esophageal:  gastroesophageal reflux disease, achalasia, non-cardiac chest pain, esophageal spasm

    Gastric:  gastroparesis, functional dyspepsia

    Small bowel:  irritable bowel syndrome, intestinal pseudo-obstruction

    Colorectal:  constipation, fecal incontinence

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research interests:


  • Use of multichannel electrogastrography to assess gastric myoelectrical activity to detect gastric motor function in patients with dyspeptic symptoms
  • Development of a noninvasive test to measure simultaneously both gastric emptying and gastric volume after ingestion of a solid meal under physiologic conditions.  This will be useful to define the pathophysiologic factors which cause symptoms in patients with functional dyspepsia and be useful to test the effects of new pharmaceutical agents.
  • Gastric motility
  • Breath tests for gastric emptying
  • Electrogastrography (EGG)
  • New pharmaceutical treatments for gastroparesis and functional dyspepsia
  • Small bowel motility recordings
  • Esophageal pH
  • Motility recordings

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Recent Medically Related Publications, Obtained from PubMed (Click on PubMed ID to view abstract)

26299414. Pasricha PJ, Yates KP, Nguyen L, Clarke J, Abell TL, Farrugia G, Hasler WL, Koch KL, Snape WJ, McCallum RW, Sarosiek I, Tonascia J, Miriel LA, Lee L, Hamilton F, Parkman HP, Outcomes and Factors Associated With Reduced Symptoms in Patients with Gastroparesis. Gastroenterology :()2015 Aug 20

26280084. Heckert J, Sankineni A, Hughes WB, Harbison S, Parkman H, Gastric Electric Stimulation for Refractory Gastroparesis: A Prospective Analysis of 151 Patients at a Single Center. Dig Dis Sci :()2015 Aug 18

26190775. Malamood M, Parkman H, Schey R, Current advances in treatment of gastroparesis. Expert Opin Pharmacother 16:13(1997-2008)2015 Sep

26059917. Youssef AS, Parkman HP, Nagar S, Drug-drug interactions in pharmacologic management of gastroparesis. Neurogastroenterol Motil :()2015 Jun 8

25956704. Singla R, Homko C, Schey R, Parkman HP, Diabetes-related autoantibodies in diabetic gastroparesis. Dig Dis Sci 60:6(1733-7)2015 Jun

25840923. Wytiaz V, Homko C, Duffy F, Schey R, Parkman HP, Foods provoking and alleviating symptoms in gastroparesis: patient experiences. Dig Dis Sci 60:4(1052-8)2015 Apr

25805422. Rao SS, Parkman HP, Advanced training in neurogastroenterology and gastrointestinal motility. Gastroenterology 148:5(881-5)2015 May

25712043. Malik Z, Sankineni A, Parkman HP, Assessing pyloric sphincter pathophysiology using EndoFLIP in patients with gastroparesis. Neurogastroenterol Motil 27:4(524-31)2015 Apr

25667034. Parkman HP, Pasricha PJ, Improving our understanding of gastroparesis. Gastroenterol Clin North Am 44:1(xv-xvi)2015 Mar

25667023. Parkman HP, Idiopathic gastroparesis. Gastroenterol Clin North Am 44:1(59-68)2015 Mar

25667018. Pasricha PJ, Parkman HP, Gastroparesis: definitions and diagnosis. Gastroenterol Clin North Am 44:1(1-7)2015 Mar

25600163. Homko CJ, Duffy F, Friedenberg FK, Boden G, Parkman HP, Effect of dietary fat and food consistency on gastroparesis symptoms in patients with gastroparesis. Neurogastroenterol Motil 27:4(501-8)2015 Apr

25576687. Parkman HP, Carlson MR, Gonyer D, Metoclopramide Nasal Spray Reduces Symptoms of Gastroparesis in Women, but not Men, With Diabetes: Results of a Phase 2B Randomized Study. Clin Gastroenterol Hepatol 13:7(1256-1263.e1)2015 Jul

24860970. Parkman H, Carlson M, Gonyer D, Response to Dr. Lankarani. Neurogastroenterol Motil 26:6(886)2014 Jun

24615549. Simmons K, Parkman HP, Granisetron transdermal system improves refractory nausea and vomiting in gastroparesis. Dig Dis Sci 59:6(1231-4)2014 Jun

24460884. Shin GH, Sankineni A, Parkman HP, Bolus retention in hiatal hernia identified by high-resolution esophageal manometry with impedance. Neurogastroenterol Motil 26:5(679-84)2014 May

24372829. Parkman HP, Carlson MR, Gonyer D, Metoclopramide nasal spray is effective in symptoms of gastroparesis in diabetics compared to conventional oral tablet. Neurogastroenterol Motil 26:4(521-8)2014 Apr

24368464. Parkman HP, Van Natta ML, Abell TL, McCallum RW, Sarosiek I, Nguyen L, Snape WJ, Koch KL, Hasler WL, Farrugia G, Lee L, Unalp-Arida A, Tonascia J, Hamilton F, Pasricha PJ, Effect of nortriptyline on symptoms of idiopathic gastroparesis: the NORIG randomized clinical trial. JAMA 310:24(2640-9)2013 Dec 25

24286121. Homko CJ, Zamora LC, Boden G, Parkman HP, Bodyweight in patients with idiopathic gastroparesis: roles of symptoms, caloric intake, physical activity, and body metabolism. Neurogastroenterol Motil 26:2(283-9)2014 Feb

24092937. Maurer AH, Camilleri M, Donohoe K, Knight LC, Madsen JL, Mariani G, Parkman HP, Van Dolsen J, The SNMMI and EANM practice guideline for small-bowel and colon transit 1.0. J Nucl Med 54:11(2004-13)2013 Nov

23721284. Parkman HP, Migraine and gastroparesis from a gastroenterologist's perspective. Headache 53 Suppl 1:(4-10)2013 Jun

23705785. Youssef AS, Argikar UA, Pathikonda M, Parkman HP, Nagar S, Identification of domperidone metabolites in plasma and urine of gastroparesis patients with LC-ESI-MS/MS. Xenobiotica 43:12(1073-83)2013 Dec

23589143. Sachdeva P, Kantor S, Knight LC, Maurer AH, Fisher RS, Parkman HP, Use of a high caloric liquid meal as an alternative to a solid meal for gastric emptying scintigraphy. Dig Dis Sci 58:7(2001-6)2013 Jul

23456496. Parkman HP, Yates K, Hasler WL, Nguyen L, Pasricha PJ, Snape WJ, Farrugia G, Koch KL, Calles J, Abell TL, Sarosiek I, McCallum RW, Lee L, Unalp-Arida A, Tonascia J, Hamilton F, Cholecystectomy and clinical presentations of gastroparesis. Dig Dis Sci 58:4(1062-73)2013 Apr

23426455. Friedenberg FK, Kowalczyk M, Parkman HP, The influence of race on symptom severity and quality of life in gastroparesis. J Clin Gastroenterol 47:9(757-61)2013 Oct

23358845. Keller DS, Parkman HP, Boucek DO, Sankineni A, Meilahn JE, Gaughan JP, Harbison S, Surgical outcomes after gastric electric stimulator placement for refractory gastroparesis. J Gastrointest Surg 17:4(620-6)2013 Apr

23181386. Sankineni A, Salieb L, Harrison M, Fisher RS, Parkman HP, Slow esophageal propagation velocity: association with dysphagia for solids. Neurogastroenterol Motil 25:1(e44-51)2013 Jan

23053897. George NS, Sankineni A, Parkman HP, Small intestinal bacterial overgrowth in gastroparesis. Dig Dis Sci 59:3(645-52)2014 Mar

22688145. Parkman HP, Mishra A, Jacobs M, Pathikonda M, Sachdeva P, Gaughan J, Krynetskiy E, Clinical response and side effects of metoclopramide: associations with clinical, demographic, and pharmacogenetic parameters. J Clin Gastroenterol 46:6(494-503)2012 Jul

22669206. Cherian D, Paladugu S, Pathikonda M, Parkman HP, Fatigue: a prevalent symptom in gastroparesis. Dig Dis Sci 57:8(2088-95)2012 Aug

22590983. Tang DM, Pathikonda M, Harrison M, Fisher RS, Friedenberg FK, Parkman HP, Symptoms and esophageal motility based on phenotypic findings of scleroderma. Dis Esophagus 26:2(197-203)2013 Feb-Mar

22293162. Parkman HP, Scintigraphy for evaluation of patients for GI motility disorders--the referring physician's perspective. Semin Nucl Med 42:2(76-8)2012 Mar

22179054. Wang D, Parkman HP, Jacobs MR, Mishra AK, Krynetskiy E, Obradovic Z, DNA microarray SNP associations with clinical efficacy and side effects of domperidone treatment for gastroparesis. J Biomed Inform 45:2(316-22)2012 Apr

22118574. Cherian D, Parkman HP, Nausea and vomiting in diabetic and idiopathic gastroparesis. Neurogastroenterol Motil 24:3(217-22, e103)2012 Mar

22011587. Shahid S, Ramzan Z, Maurer AH, Parkman HP, Fisher RS, Chronic idiopathic constipation: more than a simple colonic transit disorder. J Clin Gastroenterol 46:2(150-4)2012 Feb

21966890. Sawaya RA, Macgill A, Parkman HP, Friedenberg FK, Use of the Montreal global definition as an assessment of quality of life in reflux disease. Dis Esophagus 25:6(477-83)2012 Aug

21959322. Pathikonda M, Sachdeva P, Malhotra N, Fisher RS, Maurer AH, Parkman HP, Gastric emptying scintigraphy: is four hours necessary? J Clin Gastroenterol 46:3(209-15)2012 Mar

21871247. Parkman HP, Yates K, Hasler WL, Nguyen L, Pasricha PJ, Snape WJ, Farrugia G, Koch KL, Calles J, Abell TL, McCallum RW, Lee L, Unalp-Arida A, Tonascia J, Hamilton F, Similarities and differences between diabetic and idiopathic gastroparesis. Clin Gastroenterol Hepatol 9:12(1056-64; quiz e133-4)2011 Dec

21735078. Ramzan Z, Duffy F, Gomez J, Fisher RS, Parkman HP, Continuous glucose monitoring in gastroparesis. Dig Dis Sci 56:9(2646-55)2011 Sep

21684286. Parkman HP, Yates KP, Hasler WL, Nguyan L, Pasricha PJ, Snape WJ, Farrugia G, Calles J, Koch KL, Abell TL, McCallum RW, Petito D, Parrish CR, Duffy F, Lee L, Unalp-Arida A, Tonascia J, Hamilton F, Dietary intake and nutritional deficiencies in patients with diabetic or idiopathic gastroparesis. Gastroenterology 141:2(486-98, 498.e1-7)2011 Aug

21365240. Sachdeva P, Malhotra N, Pathikonda M, Khayyam U, Fisher RS, Maurer AH, Parkman HP, Gastric emptying of solids and liquids for evaluation for gastroparesis. Dig Dis Sci 56:4(1138-46)2011 Apr

21332597. Verrengia M, Sachdeva P, Gaughan J, Fisher RS, Parkman HP, Variation of symptoms during the menstrual cycle in female patients with gastroparesis. Neurogastroenterol Motil 23:7(625-e254)2011 Jul

21063774. Parkman HP, Jacobs MR, Mishra A, Hurdle JA, Sachdeva P, Gaughan JP, Krynetskiy E, Domperidone treatment for gastroparesis: demographic and pharmacogenetic characterization of clinical efficacy and side-effects. Dig Dis Sci 56:1(115-24)2011 Jan

20965184. Parkman HP, Yates K, Hasler WL, Nguyen L, Pasricha PJ, Snape WJ, Farrugia G, Koch KL, Abell TL, McCallum RW, Lee L, Unalp-Arida A, Tonascia J, Hamilton F, Clinical features of idiopathic gastroparesis vary with sex, body mass, symptom onset, delay in gastric emptying, and gastroparesis severity. Gastroenterology 140:1(101-15)2011 Jan

20733513. Jaffe JK, Paladugu S, Gaughan JP, Parkman HP, Characteristics of nausea and its effects on quality of life in diabetic and idiopathic gastroparesis. J Clin Gastroenterol 45:4(317-21)2011 Apr

20472097. Cherian D, Sachdeva P, Fisher RS, Parkman HP, Abdominal pain is a frequent symptom of gastroparesis. Clin Gastroenterol Hepatol 8:8(676-81)2010 Aug

20339562. Vegesna A, Besetty R, Kalra A, Farooq U, Korimilli A, Chuang KY, Fisher R, Parkman H, Miller L, Induced opening of the gastroesophageal junction occurs at a lower gastric pressure in gerd patients and in hiatal hernia subjects than in normal control subjects. Gastroenterol Res Pract 2010:(857654)2010

20215751. Doma S, Paladugu S, Parkman HP, Friedenberg FK, Wireless capsules for esophageal pH monitoring: are we placing them correctly? Digestion 82:1(54-9)2010

20082665. Khayyam U, Sachdeva P, Gomez J, Ramzan Z, Smith MS, Maurer AH, Fisher RS, Parkman HP, Assessment of symptoms during gastric emptying scintigraphy to correlate symptoms to delayed gastric emptying. Neurogastroenterol Motil 22:5(539-45)2010 May

20003077. Parkman HP, Camilleri M, Farrugia G, McCallum RW, Bharucha AE, Mayer EA, Tack JF, Spiller R, Horowitz M, Vinik AI, Galligan JJ, Pasricha PJ, Kuo B, Szarka LA, Marciani L, Jones K, Parrish CR, Sandroni P, Abell T, Ordog T, Hasler W, Koch KL, Sanders K, Norton NJ, Hamilton F, Gastroparesis and functional dyspepsia: excerpts from the AGA/ANMS meeting. Neurogastroenterol Motil 22:2(113-33)2010 Feb

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