William Park, MD| Gastroenterology | MedStar Health
About me
Dr. Park is a board-certified, fellowship-trained gastroenterologist who sees patients for all conditions of the gastrointestinal tract. He has multiple areas of special interest including MASLD (metabolic associated steatotic liver disease), IBD (inflammatory bowel disease), eosinophilic esophagitis, gastric and colon cancer screening, and H pylori associated diseases.
Dr. Park has advanced training in gastric and colon cancer screening from the University of Tokyo Hospital and was the recipient of the CCFA Visiting IBD Fellowship Award where he completed specialized education in inflammatory bowel disease through the Crohn’s & Colitis Foundation at Mount Sinai in New York City. He has regularly presented his research at national conferences including the American College of Gastroenterology, Digestive Disease Week, and the American Association for the Study of Liver Diseases and is a member of the American College of Gastroenterology, American Society for Gastrointestinal Endoscopy, and the American Gastrointestinal Association.
He received his medical degree from Drexel University College of Medicine in Philadelphia and completed his residency at Boston Medical Center. Dr. Park completed his fellowship in gastroenterology at Brown University – Warren Alpert Medical School in Rhode Island.
Dr. Park is committed to providing comprehensive care to his patients and treating them with respect. He strongly believes that good medicine begins with empathy—understanding the person behind the symptoms, empowering his patients with knowledge and support, and collaborating on care that truly fits their life.
When he’s not working, Dr. Park enjoys running marathons, playing soccer, hiking, and listening to classical music.
Clinical areas of focus
- Abdominal Pain
- Digestive System Symptoms
- Gallstones
- Gastritis
- Hemorrhoids
Conditions and procedures
Conditions I treat
- Abdominal Pain
- Abnormal Stool
- Achalasia
- Acute Pancreatitis
- Alimentary Tract Foreign Body
- Anus And Rectum Diseases
- Aphagia And Dysphagia
- Barrett's Esophagus
- Benign Neoplasm Of Colon, Rectum, Anus And Anal Canal
- Benign Neoplasm Of Digestive System
- Bile Duct Stones
- Blood In Stool
- Bowel Obstruction
- Chronic Constipation
- Chronic Diarrhea
- Colitis
- Colon Cancer
- Colon Polyps
- Congenital Malformations Of Digestive System
- Crohn's Disease
- Crohn's Disease [Regional Enteritis]
- Diaphragmatic Hernia
- Digestive System Complications
- Digestive System Diseases
- Digestive System Symptoms
- Diseases Of Esophagus
- Diseases Of Stomach And Duodenum
- Diverticulitis
- Duodenal Ulcer
- Duodenitis
- Dysphagia
- Epigastric Pain
- Esophageal Cancer
- Esophageal Stricture
- Esophagitis
- Flatulence
- Functional Dyspepsia
- Functional Intestinal Disorders
- Gallbladder Disease
- Gallstones
- Gastric Cancer
- Gastritis
- Gastrointestinal Bleeding
- Helicobacter Pylori
- Hemorrhoids
- Hepatitis C
- Hepatomegaly
- Hepatomegaly And Splenomegaly
- Jaundice
- Liver Cirrhosis
- Liver Failure
- Liver Fibrosis
- Malabsorption
- Melena
- Nausea
- Noninfective Gastroenteritis
- Pancreatitis
- Paralytic Ileus And Intestinal Obstruction
- Peptic Ulcer Disease
- Perianal Fistula
- Portal Hypertension
- Postprandial Diarrhea
- Primary Sclerosing Cholangitis
- Proctitis
- Rectal Cancer
- Rectal Pain
- Regional Enteritis
- Small Intestine Cancer
- Stomach Cancer
- Stomach Cramps
- Stomach Ulcers
- Ulcerative Colitis
- Viral Hepatitis
- Vomiting
Procedures I perform
- Capsule Endoscopy
- Celiac Disease Treatment
- Colonoscopy Through Stoma
- Colonoscopy With Biopsy
- Diarrhea Treatment
- Dilation Of Esophagus
- Endoscopic Mucosal Resection
- Endoscopic Retrograde Cholangiopancreatography
- Endoscopic Retrograde Cholangiopancreatography (ERCP)
- Endoscopic Submucosal Dissection
- Enteroscopy
- Esophageal Dilation
- Esophageal PH Monitoring
- Esophagogastroduodenoscopy With Biopsy
- Fecal Microbiota Transplant
- Fecal Transplant
- Flexible Colonoscopy With Biopsy
- Gastrointestinal Biopsy
- Gastrointestinal Foreign Body Removal
- Gastrointestinal Motility Study
- Gastrostomy
- Hydrogen Breath Test
- Intestinal Biopsy
- Irritable Bowel Syndrome Treatment
- Lactose Breath Test
- Lactose Intolerance Testing
- Lower Gi Endoscopy
- Pancreatitis Treatment
- PH Monitoring
- Radiofrequency Ablation
- Rectal Biopsy
- Retrograde Cholangiopancreatography
- Sigmoidoscopy With Biopsy
- Stomach Pain Treatment
- Swallowing Disorder Treatment
- Upper Endoscopy
- Upper Gi Endoscopy
Insurance
MedStar Health accepts most major health insurance plans. If you are uncertain as to whether your individual health insurance plan is accepted at MedStar Health, please call your insurance company.
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List of insurance plans we accept
- Jai Medical Systems - Maryland Health Choice
- Aetna HMO
- United Healthcare Choice
- Cigna TotalCare (HMO D-SNP)
- CIGNA PPO
- Kaiser Permanente Signature - Added Choice
- CareFirst Community Health Plan of MD
- CareFirst Blue Choice Opt Out Plus Open Access (POS)
- United Healthcare Choice Plus Cardiac Global
- Priority Partners - Maryland Health Choice
- Fee-for-Service (FFS) District of Columbia, Maryland and Virginia Medicaid
- CareFirst Group Medicare Advantage prescription drug benefit (PPO)
- Navigate
- M.D. IPA (HMO)
- Aetna Elect Choice/ EPO (Aetna Health Fund)
- Amerigroup DC Alliance
- Medicare Advantage - Advantra Value (PPO)
- Humana Medicare Advantage - HMO Open Access
- AMERIVANTAGE/Amerigroup Community Care
- CareFirst Blue Choice Opt Out Open Access
- Anthem BCBS of VA Key Care POS/PPO/Indemnity
- Johns Hopkins Advantage MD PPO
- Aetna Better Health of VA
- CareFirst Maryland Indemnity or PPO
- United Medicare Private Fee-for-Service (PFFS) plans
- CareFirst BlueCross BlueShield Advantage Core/Enhanced
- Choice Fund PPO
- Choice POS II Open Access
- Private Health Care Systems (PPO)
- IH-Open HMO Option
- Johns Hopkins Advantage MD PLUS PPO
- Core Essential (HMO)
- United Healthcare Select HMO - EPO/NPP
- Anthem BCBS of VA HealthKeepers (HMO)
- Advantra Platinum (PPO)
- Kaiser Permanente Select - Added Choice
- Anthem BCBS of VA HealthKeepers (POS & POS OA)
- Coventry of Delaware HMO/PPO
- Aetna HMO-Open Access/Select OA/HealthFund/Health Network Option OA
- CareFirst Maryland Point of Service Plan
- Coventry Health Care National Network PPO
- Kaiser Maryland Medicaid MCO
- Aetna Traditional Choice (PPO)
- CareFirst Blue Card Program
- United Healthcare Choice Cardiac Global
- United Healthcare Navigate Cardiac Global
- Cigna True Choice Medicare (PPO)
- Aetna Managed Choice (POS)
- Kaiser Permanente Signature
- Anthem BCBS of VA HealthKeepers Plus
- OA Plus
- IH-Open POS II
- Amerigroup DC Healthy Families
- HealthyBlue PPO
- United HealthCare Community Plan - Maryland Health Choice Program
- IH-Open EPO Plus
- Great-West Healthcare POS/CIGNA
- MedStar Family Choice - Maryland Health Choice
- United Healthcare Choice Plus
- Aetna VA Exchange
- Cigna Preferred Medicare (HMO)
- Cigna True Choice Plus Medicare (PPO)
- HumanaChoice Honor's plan PPO
- Erickson Advantage Plans
- Kaiser Permanente Select Cardiac Global
- CareFirst Group Medicare Advantage
- Choice POS
- Aetna Medicare Advantage PFFS Plan
- Cigna Achieve Medicare (HMO C-SNP)
- Choice POS II
- CareFirst BlueChoice HMO
- Magellan Complete Care of VA - VA Medicaid MCO
- CIGNA PPO Plus
- United Healthcare Select Plus (POS)
- HumanaChoice PPO
- WellPoint Maryland - Maryland Health Choice
- Kaiser Permanente HMO Plus and DHMO Plus Member
- BCBS of Michigan (BCN Advantage,Security Blue, Freedom, Medicare PLUS Blue Group PPO)
- Select HMO/HealthFund/Health Network
- Aetna Elect Choice/ Open Access (POS)
- Choice Care Network/HUMANA (PPO)
- CareFirst MedStar PPO
- Optima Family Care MCO - VA Medicaid MCO
- IH-Network Only Plus
- TRICARE East Select
- CareFirst Federal Employee Program (Std. & Basic PPO)
- M.D. IPA Preferred (POS)
- Anthem BCBS Medi Blue SNP
- HUMANA/Choice Care Medicare Plans (Choice, Gold Choice)
- Aetna Classic 5000PD
- First Health PPO
- UnitedHealthcare Medicare Advantage DSNP District of Columbia
- Aetna Open Choice (PPO)
- United Healthcare Select HMO-EPO/NPP Cardiac Global
- Aetna Classic 3500
- TRICARE for Life East
- MedStar Family Choice DC Healthy Families
- UHC Passport
- Coventry Health Care of Virginia
- MedStar Family Choice DC Healthcare Alliance
- Aetna Advantage 6350
- IH-POS
- IH-Open HMO
- CareFirst Dual Prime HMO-SNP
- Beech Street PPO
- Kaiser Permanente Medicare Advantage Signature and Select
- Aetna Signature Administrator PPO/TPA
- BlueChoice Open Access
- Blue Choice Advantage
- IH-Open POS Plus
- Options PPO Cardiac Global
- Tricare Reserve Select
- Veterans Affairs Community Care Network
- Private Fee-for-Service Plans (PFFS)
- Anthem Federal Employee Program Standard
- CareFirst Administrators
- OCI Direct (HMO)
- Humana Medicare Advantage - PPO
- Humana Gold Plus HMO
- Aetna Premier 200PD
- Network OA
- UnitedHealthcare Individual Exchange Plans
- Kaiser Permanente Flexible Choice 3-tier POS
- Aetna Advantage 6350PD
- DC/MD SHOP QHP Small Business Plans
- Mamsi Life & Health (Indem./PPO) Cardiac Global
- Aetna Managed Choice Open Access (POS)
- CIGNA EPO
- UnitedHealthcare Medicare Adv. Special Needs Plans
- Geisinger Medicare Advantage
- Anthem BCBS Medi Blue Plus
- CareFirst FEP Blue Focus
- CIGNA POS/Network POS
- IH-HMO
- BCBS Out-of-State Medicare Plans (Blue Advantage)
- HighMark
- Kaiser Permaenete Signature - Added Choice Cardiac Global
- MD IPA (HMO) & MD IPA Preferred Cardiac Global
- CareFirst MedStar Select PPO
- Anthem BCBS Medi Blue Dual Adv
- CareFirst NASCO
- CIGNA HMO & Network (HMO)
- United Student Resources
- CIGNA Connect EPO
- First Health PPO
- AmeriHealth Caritas DC Healthcare Alliance
- Lasso Healthcare - Medicare Medical Savings Account
- CIGNA SureFit (HMO)
- Aetna Basic
- United Healthcare Options (PPO)
- CIGNA Indemnity
- Aetna Worker's Compensation Network
- CareFirst EPO
- TriWest Healthcare Alliance
- Aetna Student Health Insurance
- CareFirst Blue Preferred PPO
- Alterwood Advanatge HMO & DSNP Plans
- IH-Open Network Only Plus
- Health Services for Children with Special Needs
- Medicare Direct
- Maryland Physicians Care MCO
- Aetna Better Health of MD
- TRICARE East Prime
- Police and Fire Clinic
- Anthem Federal Employee Program Basic
- UHC Group Medicare Advantage Plans (HMO, POS, PPO)
- POS OA
- MultiPlan, Inc
- Johns Hopkins Advantage MD HMO
- IH-POS Plus
- Cigna Alliance Medicare (HMO)
- UnitedHealthcare and AARP Medicare Complete Plans
- Employee Health Plan
- Kaiser Permanente Flexible Choice POS Cardiac Global
- Mamsi Life & Health (Indem./PPO)
- Optimum Choice & Optimum Choice Preferred (POS) Cardiac Global
- IH-EPO Plus
- Kaiser Permanente Medicare Plus
- Kaiser Permanente Select
- Aetna Advantage 5750
- IH-Indemnity
- Optimum Choice Preferred (POS)
- IH-PPO
- Uniformed Services Family Health Plan
- NYC Medicare Advantage Plus
- CareFirst (NCA) Indemnity
- Healthy Blue (HMO, POS)
- CIGNA HMO Open Access
- Sentara Health
- Aetna Classic 5000
- Aetna Medicare Advantage HMO & PPO Plans
- AmeriHealth Caritas DC Healthy Families
- Medicare FFS
- United Healthcare Community Plan - VA Medicaid MCO
- Optimum Choice
- Aetna Quality Point of Service (POS)
Education
Fellowship: Brown University (2025)
Residency: Boston University Medical Center (2022)
Medical School: Drexel University College of Medicine (2019)