Physician
Gastroenterology
Dr. Richard W. McCallum, MD
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Doctor Richard W. McCallum, MD practices Gastroenterology. Richard McCallum is a published MD. He has 94 papers published. The most current publication "Video Capsule Endoscopy: A Tool for the Assessment of Small Bowel Transit Time." Dr. Richard W. McCallum is registered with Medicare.
Publications
- EUS-guided FNA biopsy of the muscularis propria of the antrum in patients with Gastroparesis is feasible and safe.
- Surgical approaches to treatment of gastroparesis: Gastric electrical stimulation, pyloroplasty, total gastrectomy and enteral feeding tubes.
- Association of low numbers of CD206-positive cells with loss of ICC in the Gastric body of patients with diabetic gastroparesis.
- Cyclic vomiting Syndrome: treatment options.
- Evaluation of acotiamide for the treatment of functional dyspepsia.
- Rumination Syndrome: A Review of Current Concepts and Treatments.
- Neurochemical mechanisms and pharmacologic strategies in managing nausea and vomiting related to cyclic vomiting syndrome and other gastroIntestinal disorders.
- Effect of nortriptyline on symptoms of idiopathic Gastroparesis: the NORIG randomized clinical trial.
- Defining esophageal landmarks, gastroesophageal reflux Disease, and Barrett's esophagus.
- Phase 2b, randomized, double-blind 12-week studies of TZP-102, a ghrelin receptor agonist for diabetic Gastroparesis.
- Gastric electrical stimulation with Enterra therapy improves symptoms of idiopathic gastroparesis.
- Food Impaction Due to Nutcracker Esophagus.
- Rifaximin in irritable bowel Syndrome: rationale, evidence and clinical use.
- Cholecystectomy and Clinical Presentations of Gastroparesis.
- Crohn's Disease May Be Differentiated Into 2 Distinct Biotypes Based on the Detection of Bacterial Genomic Sequences and Virulence Genes Within Submucosal Tissues.
- Factors related to Abdominal pain in gastroparesis: contrast to patients with predominant nausea and vomiting.
- A phase 2a, randomized, double-blind 28-day study of TZP-102 a ghrelin receptor agonist for diabetic Gastroparesis.
- Gender and estradiol as major factors in the expression and dimerization of nNOSα in rats with experimental diabetic Gastroparesis.
- The addition of pyloroplasty as a new surgical approach to enhance effectiveness of Gastric electrical stimulation therapy in patients with gastroparesis.
- Is symptom relief associated with reduction in Gastric retention after Gastric electrical stimulation treatment in patients with gastroparesis? A sensitivity analysis ...
- A meta-analysis: The Treatment of High-Frequency Gastric Electrical Stimulation for Gastroparesis.
- Elevated serum ghrelin levels in adult patients with cyclic vomiting Syndrome.
- Barrett's esophagus: clinical features, obesity, and imaging.
- Barrett's esophagus: surgical treatments.
- Similarities and differences between diabetic and idiopathic Gastroparesis.
- Two-channel Gastric pacing in patients with diabetic gastroparesis.
- Gastric Juice Prostaglandins and Peptide Growth Factors as Potential Markers of Chronic Atrophic Gastritis, Intestinal Metaplasia and Gastric Cancer: Their Potential C...
- Optimizing the diagnostic power with Gastric emptying scintigraphy at multiple time points.
- Does grading the severity of gastroparesis based on scintigraphic Gastric emptying predict the treatment outcome of patients with gastroparesis?
- Gastric electrical stimulation improves outcomes of patients with gastroparesis for up to 10 years.
- Gastric electrical stimulation with Enterra therapy improves symptoms from diabetic gastroparesis in a prospective study.
- Multicenter, double-blind, placebo-controlled crossover study to assess the acute prokinetic efficacy of nizatidine-controlled release (150 and 300 mg) in patients wit...
- Disturbances of Esophageal motility in eosinophilic esophagitis: a case series.
- The effect of a meal and water loading on heart rate variability in children with functional dyspepsia.
- Efficacy of Gastric electrical stimulation in improving functional vomiting in patients with normal Gastric emptying.
- Severe gastroparesis: medical therapy or Gastric electrical stimulation.
- Do stool form and frequency correlate with whole-gut and colonic transit? Results from a multicenter study in constipated individuals and healthy controls.
- Dumping Syndrome: establishing criteria for diagnosis and identifying new etiologies.
- Small Intestinal bacterial overgrowth in gastroparesis: are there any predictors?
- Efficacy of tricyclic antidepressant therapy in adults with cyclic vomiting Syndrome: a two-year follow-up study.
- Heightened colon motor activity measured by a wireless capsule in patients with constipation: relation to colon transit and IBS.
- Gastroparesis, pseudoachalasia and impaired Intestinal motility as paraneoplastic manifestations of small cell lung cancer.
- Investigation of colonic and whole-gut transit with wireless motility capsule and radiopaque markers in constipation.
- Comparison of anorectal manometry to endoanal ultrasound in the evaluation of fecal incontinence.
- Endoscopic pyloric injection of botulinum toxin-A for the treatment of postvagotomy Gastroparesis.
- Investigation of Colonic and Whole Gut Transit with Wireless Motility Capsule and Radioopaque Markers in Constipation.
- GastroIntestinal Motility and Neurogastroenterology. Preface.
- Treatment of refractory gastroparesis: Gastric and jejunal tubes, botox, Gastric electrical stimulation, and surgery.
- Antral inflammatory cells, Gastric emptying, and electrogastrography in pediatric functional dyspepsia.
- Differences in intraGastric pH in diabetic vs. idiopathic gastroparesis: relation to degree of Gastric retention.
- Two-channel Gastric pacing with a novel implantable Gastric pacemaker accelerates glucagon-induced delayed Gastric emptying in dogs.
- Mesenteric venulitis: a rare etiology of hematochezia and "colitis" with distinctive colon pathology.
- Domperidone: review of pharmacology and clinical applications in gastroenterology.
- GastroIntestinal electrical stimulation for treatment of gastroIntestinal disorders: gastroparesis, obesity, fecal incontinence, and constipation.
- Robust propagation velocity estimation of Gastric electrical activity by least mean p-norm blind channel identification.
- Efficacy of rifaximin, a nonabsorbed oral antibiotic, in the treatment of small Intestinal bacterial overgrowth.
- Significant enhancement of Esophageal pre-epithelial defense by tegaserod: implications for an esophagoprotective effect.
- An evaluation of adult electrogastrography criteria in healthy children.
- Electrogastrography in pediatric functional dyspepsia: relationship to Gastric emptying and symptom severity.
- Mechanisms of high-frequency electrical stimulation of the stomach in gastroparetic patients.
- Fructose intake at current levels in the United States may cause gastroIntestinal distress in normal adults.
- Chronic gastritis is not associated with Gastric dysrhythmia or delayed solid emptying in children with dyspepsia.
- Absence of the interstitial cells of Cajal in patients with Gastroparesis and correlation with clinical findings.
- Estimation of propagation velocity of Gastric electrical activity using LMSTDE.
- Treatment of diabetic gastroparesis by high-frequency Gastric electrical stimulation.
- Treatment of Gastroparesis.
- Delayed gastric emptying in gastroesophageal reflux Disease: reassessment with new methods and symptomatic correlations.
- Further experience with Gastric stimulation to treat drug refractory gastroparesis.
- The treatment of gastroparesis in the age of the Gastric pacemaker: a review.
- Treatment of Gastroparesis with electrical stimulation.
- Gastric Dysmotility and Gastroparesis.
- Video Capsule Endoscopy: A Tool for the Assessment of Small Bowel Transit Time.
- PseudoAchalasia: Still a Tough Clinical Challenge.
- Acute pancreatitis as the initial presentation of Systematic lupus erythematosus.
- Esophageal perforation post pneumatic dilatation for achalasia managed by Esophageal stenting.
- Chronic Vomiting and diarrhea in a young adult female.
- Crohn''s Disease and the mycobacterioses: a quarter century later. Causation or simple association?
- Measurement of gastroIntestinal transit.
- Evaluation of five probiotic products for label claims by DNA extraction and polymerase chain reaction analysis.
- Treating irritable bowel Syndrome with a food elimination diet followed by food challenge and probiotics.
- Dietary intake and nutritional deficiencies in patients with diabetic or idiopathic Gastroparesis.
- Gastroparesis secondary to a demyelinating Disease: a case series.
- Sacral nerve stimulation for fecal incontinence: results of a 120-patient prospective multicenter study.
- EUS guidance in Gastric pacemaker implantation.
- Clinical features of idiopathic gastroparesis vary with sex, body mass, symptom onset, delay in Gastric emptying, and gastroparesis severity.
- Gastric electrical stimulation for medically refractory gastroparesis.
- Pharmacotherapy of Gastroparesis.
- Infection rates in a large investigational trial of sacral nerve stimulation for fecal incontinence.
- Consensus recommendations for Gastric emptying scintigraphy: a joint report of the American Neurogastroenterology and Motility Society and the Society of Nuclear Medic...
- Feasibility and safety of gastric electrical stimulation for a child with intractable visceral Pain and gastroparesis.
- Small Intestinal bacterial overgrowth in irritable bowel syndrome: are there any predictors?
- Clinical response to Gastric electrical stimulation in patients with postsurgical gastroparesis.
- Chronic Gastric electrical stimulation for gastroparesis reduces the use of prokinetic and/or antiemetic medications and the need for hospitalizations.
Schools
University Of Queensland Faculty Of Health Sciences
Charity Hospital
Barnes Hospital Wash
Wadsworth Va HospUcla
Procedures Preformed
- Colonoscopy, Proctosigmoidoscopy, and Sigmoidoscopy
- Endoscopy (Esophagus, Stomach, Small Intestine)
- Manometry
Conditions Treated
- Abdominal Pain
- Anemia
- Benign Neoplasm of the Digestive System
- Cholecystitis and Gallstones
- View All
Doctors Specialties
- Gastroenterology
Accepted Insurances
- Amerigroup (Wellpoint)
- Blue Card PPO
- Blue Advantage HMO
- Blue Choice
- CHAMPVA
- Cigna HMO
- Cigna PPO
- Great West Healthcare-Cigna PPO
- Open Access Plus
- Commercial Insurance Company
- Medicare MCR
- MultiPlan PPO
- PHCS Network PPO
Education
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VA Greater Los Angeles Healthcare System -
Washington University - Barnes-Jewish Hospital
Drug Facts
| NPI NUMBER | 1902909815 | |
| NPPES Provider LastName | MCCALLUM | |
| NPPES Provider FirstName | RICHARD | |
| NPPES Provider ZIPCode | 799052707 | |
| NPPES Provider State | TX | |
| Specialty Description | Gastroenterology | |
| Total Claim Count | 267.0 | |
| Distinct Opioid Count | 0.0 | |
| Opioid Claim Count | 0.0 | |
| Percent Opioid Claims | 0.0 |
Helpful Reviews
Medicare Facts
| National Provider Identifier [NPI] | 1902909815 |
| Last Name Of The Provider | MCCALLUM |
| First Name Of The Provider | RICHARD |
| View All |
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