Associate Professor, Medicine-Massachusetts General Hospital, Harvard Medical School
Gastroenterology
Dr. Andrew T. Chan, MD
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Andrew T. Chan is an expert in the field of Gastroenterology. He studied medicine at Harvard Medical School. Harvard Medical School is one of the top medical schools in the US. Harvard Medical School is ranked 1 in research and 12 in primary care medicine He received 1 awards: "Meaningful Use Stage 1 Certification". Andrew Chan is also published. He has 95 publications published. The lastest publication: "Association Between Circulating Levels of C-Reactive Protein and Interleukin-6 and Risk of Inflammatory Bowel Disease.' Andrew Chan accepts Medicare payments and is registered with Medicare.gov.
Publications
- Vitamin D Supplementation Modulates T Cell-Mediated Immunity in Humans: Results from a Randomized Control Trial.
- Association Between Circulating Levels of C-Reactive Protein and Interleukin-6 and Risk of Inflammatory Bowel Disease.
- Rosacea, Use of Tetracycline, and Risk of Incident Inflammatory Bowel Disease in Women.
- Habitual intake of flavonoid subclasses and risk of Colorectal cancer in 2 large prospective cohorts.
- A genome-wide association study for Colorectal cancer identifies a risk locus in 14q23.1.
- Postdiagnostic intake of one-carbon nutrients and alcohol in relation to Colorectal cancer survival.
- Zinc intake and risk of Crohn's Disease and ulcerative colitis: a prospective cohort study.
- Association of aspirin and NSAID use with risk of Colorectal cancer according to genetic variants.
- Reproductive factors, exogenous hormone use and risk of hepatocellular carcinoma among US women: results from the Liver Cancer Pooling Project.
- Nutrients, Foods, and Colorectal Cancer Prevention.
- Aspirin and COX-2 inhibitor use in patients with stage III colon Cancer.
- Molecular Pathways: Aspirin and Wnt Signaling-A Molecularly Targeted Approach to Cancer Prevention and Treatment.
- Screening and Surveillance for Barrett Esophagus.
- Author response: oral contraceptives and Crohn's Disease.
- Genome-wide meta-analysis identifies six novel loci associated with habitual coffee consumption.
- Plasma 25-hydroxyvitamin d and risk of Colorectal cancer after adjusting for inflammatory markers.
- Discovery of Colorectal cancer PIK3CA mutation as potential predictive biomarker: power and promise of molecular pathological epidemiology.
- Etiologic field effect: reappraisal of the field effect concept in Cancer predisposition and progression.
- Relating the metatranscriptome and metagenome of the human gut.
- Large-scale genetic study in East Asians identifies six new loci associated with Colorectal cancer risk.
- The vitamin B12 analog cobinamide is an effective hydrogen sulfide antidote in a lethal rabbit model.
- Measures of Adiposity Are Associated With Increased Risk of Peptic Ulcer.
- Impact of vitamin d supplementation on inflammatory markers in african americans: results of a four-arm, randomized, placebo-controlled trial.
- Estimating the Heritability of Colorectal Cancer.
- Cost-effectiveness analysis of chromoendoscopy for Colorectal cancer surveillance in patients with ulcerative colitis.
- Challenges in Designing a National Surveillance Program for Inflammatory Bowel Disease in the United States.
- A Prospective Study of Long-term Intake of Dietary Fiber and Risk of Crohn's Disease and Ulcerative Colitis.
- Pleiotropic effects of genetic risk variants for other cancers on Colorectal cancer risk: PAGE, GECCO and CCFR consortia.
- Higher Serum Levels of Vitamin D are Associated with Reduced Risk of Diverticulitis.
- SBERIA: set-based gene-environment interaction test for rare and common variants in complex Diseases.
- No association between germline variation in catechol-O-methyltransferase and Colorectal cancer survival in postmenopausal women.
- Anatomic subsite of primary Colorectal cancer and subsequent risk and distribution of second cancers.
- Long-term intake of dietary fat and risk of ulcerative colitis and Crohn's Disease.
- Bisphosphonate Use and Risk of Colorectal Cancer.
- Physical Activity, Tumor PTGS2 Expression, and Survival in Patients with Colorectal Cancer.
- Ustekinumab for moderate-to-severe Crohn's Disease.
- Effect of vitamin d supplementation on blood pressure in blacks.
- Association between sex hormones and Colorectal cancer risk in men and women.
- A prospective study of plasma inflammatory markers and risk of Colorectal cancer in men.
- Prospective cohort studies of bowel movement frequency and laxative use and Colorectal cancer incidence in US women and men.
- Early life factors and risk of inflammatory bowel Disease in adulthood.
- Psoriasis, psoriatic arthritis and increased risk of incident Crohn's Disease in US women.
- Statins and Colorectal cancer.
- Genome-wide search for gene-gene interactions in Colorectal cancer.
- Prospective Study of Family History and Colorectal Cancer Risk by Tumor LINE-1 Methylation Level.
- Common Single-Nucleotide Polymorphisms in the Estrogen Receptor ? Promoter Are Associated with Colorectal Cancer Survival in Postmenopausal Women.
- Molecular pathological epidemiology of epigenetics: emerging integrative science to analyze environment, host, and Disease.
- Identification of Genetic Susceptibility Loci for Colorectal Tumors in a Genome-wide Meta-analysis.
- Phenotypic and tumor molecular characterization of Colorectal cancer in relation to a susceptibility SMAD7 variant associated with survival.
- Association Between Depressive Symptoms and Incidence of Crohn's Disease and Ulcerative Colitis: Results From the Nurses' Health Study.
- Aspirin and Chemoprevention of Cancer: Reaching Beyond The Colon.
- An Emerging Role for Anti-inflammatory Agents for Chemoprevention.
- Hormone Therapy Increases Risk of Ulcerative Colitis but not Crohn's Disease.
- A Prospective Study of Cigarette Smoking and the Risk of Inflammatory Bowel Disease in Women.
- Blood donation and Colorectal cancer incidence and mortality in men.
- Oral contraceptives, reproductive factors and risk of inflammatory bowel Disease.
- Postmenopausal Hormone Therapy Is Associated with a Reduced Risk of Colorectal Cancer Lacking CDKN1A Expression.
- TH-A-BRA-10: The Role of Treatment Plan Adaptation during the Course of Proton Radiotherapy for Patients with Head and Neck Cancer.
- A Prospective Study of Bisphosphonate Use and Risk of Colorectal Cancer.
- Is Diabetes a Risk Factor for Colorectal Cancer?
- Colorectal cancer: a tale of two sides or a continuum?
- Are we ready to recommend aspirin for Cancer prevention?
- Assessment of Colorectal cancer molecular features along bowel subsites challenges the conception of distinct dichotomy of proximal versus distal colorectum.
- Geographical variation and incidence of inflammatory bowel Disease among US women.
- Higher Predicted Vitamin D Status is Associated with Reduced Risk of Crohn's Cisease.
- Aspirin in the chemoprevention of Colorectal neoplasia: an overview.
- Cholelithiasis and the risk of nephrolithiasis.
- Aspirin and Colorectal cancer prevention in Lynch syndrome.
- The Influence of UGT1A6 Variants and Aspirin Use in a Randomized Trial of Celecoxib for Prevention of Colorectal Adenoma.
- Relationship Between Statin Use and Colon Cancer Recurrence and Survival: Results From CALGB 89803.
- C-reactive Protein and Risk of Colorectal Adenoma According to Celecoxib Treatment.
- Missed polyps, missed opportunities.
- Meta-analysis of new genome-wide association studies of Colorectal cancer risk.
- Statin use and Colorectal cancer risk according to molecular subtypes in two large prospective cohort studies.
- Aspirin Use, Body Mass Index, Physical Activity, Plasma C-Peptide, and Colon Cancer Risk in US Health Professionals.
- Molecular Prognostic and Predictive Markers in Colorectal Cancer: Current Status.
- Fruit, Vegetables, and Folate: Cultivating the Evidence for Cancer Prevention.
- Use of Aspirin or Nonsteroidal Anti-inflammatory Drugs Increases Risk for Diverticulitis and Diverticular Bleeding.
- Circulating Levels of Vitamin D and Colon and Rectal Cancer: The Physicians' Health Study and a Meta-analysis of Prospective Studies.
- Long-term use of aspirin and the risk of gastroIntestinal bleeding.
- Aspirin and familial adenomatous polyposis: coming full circle.
- ABO Blood Group and Risk of Colorectal Cancer.
- Association of CTNNB1 (beta-catenin) alterations, body mass index, and physical activity with survival in patients with Colorectal cancer.
- Reported behavior of eating anything at anytime and risk of Colorectal cancer in women.
- Phosphorylated AKT expression is associated with PIK3CA mutation, low stage, and favorable outcome in 717 Colorectal cancers.
- Inflammatory markers are associated with risk of Colorectal cancer and chemopreventive response to anti-inflammatory drugs.
- Turning up the heat on Colorectal cancer.
- Interactions between Plasma Levels of 25-Hydroxyvitamin D, Insulin-Like Growth Factor (IGF)-1 and C-Peptide with Risk of Colorectal Cancer.
- Dietary insulin load, dietary insulin index, and Colorectal cancer.
- Cathepsin B expression and survival in colon Cancer: implications for molecular detection of neoplasia.
- Role of vitamin and mineral supplementation and aspirin use in Cancer survivors.
- Treatment-associated acute myeloid leukemia in a patient with Crohn's Disease on 6-mercaptopurine.
- Primary prevention of Colorectal cancer.
- HIF1A overexpression is associated with poor prognosis in a cohort of 731 Colorectal cancers.
Schools
Harvard Medical School
Massachusetts General Hospital
Procedures Preformed
- Colonoscopy, Proctosigmoidoscopy, and Sigmoidoscopy
- Endoscopy (Esophagus, Stomach, Small Intestine)
Conditions Treated
- Abdominal Pain
- Anemia
- Barrett's Esophagus
- Benign Neoplasm of the Digestive System
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Doctors Specialties
- Gastroenterology
Accepted Insurances
- Aetna HMO
- Choice Plus POS II
- Amalgamated Clothing & Textile Workers Union WC
- American Republic
- Pathway X Bronze Direct CACA IN HIX
- Bakery & Confectionary Union Plan
- Blue Card PPO
- BlueConnect HMO
- Blue with Managed Care Behavioral Health HMO
- Preferred Blue PPO
- Cigna HMO
- Cigna PPO
- Great West Healthcare-Cigna PPO
- LocalPlus
- Open Access Plus
- Commercial Insurance Company
- GHI PPO
- Fallon Community Health Plan
- First Health (Coventry Health Care) PPO
- Harvard Pilgrim Health Care PPO
- Choice Care PPO
- Medicaid
- Medicare MCR
- MultiPlan PPO
- PHCS Network PPO
- Neighborhood Health Plan
- Network Health
- Tufts Health Plans
- Tufts PPO
- Choice Plus POS
- Navigate HMO
- Navigate POS
- Options PPO
- United Healthcare
Awards
- Meaningful Use Stage 1 Certification
Education
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Massachusetts General Hospital -
Harvard Medical School
Hospital
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Massachusetts General Hospital
Drug Facts
| NPI NUMBER | 1982600144 | |
| NPPES Provider LastName | CHAN | |
| NPPES Provider FirstName | ANDREW | |
| NPPES Provider ZIPCode | 021142621 | |
| NPPES Provider State | MA | |
| Specialty Description | Gastroenterology | |
| Total Claim Count | 102.0 | |
| Distinct Opioid Count | 0.0 | |
| Opioid Claim Count | 0.0 | |
| Percent Opioid Claims | 0.0 |
Helpful Reviews
Medicare Facts
| National Provider Identifier [NPI] | 1982600144 |
| Last Name Of The Provider | CHAN |
| First Name Of The Provider | ANDREW |
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