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)
- Kaiser Permanente Signature - Added Choice
- CIGNA PPO
- CareFirst Community Health Plan of MD
- CareFirst Blue Choice Opt Out Plus Open Access (POS)
- United Healthcare Choice Plus Cardiac Global
- Fee-for-Service (FFS) District of Columbia, Maryland and Virginia Medicaid
- Priority Partners - Maryland Health Choice
- Navigate
- CareFirst Group Medicare Advantage prescription drug benefit (PPO)
- M.D. IPA (HMO)
- Amerigroup DC Alliance
- Aetna Elect Choice/ EPO (Aetna Health Fund)
- Humana Medicare Advantage - HMO Open Access
- Medicare Advantage - Advantra Value (PPO)
- AMERIVANTAGE/Amerigroup Community Care
- CareFirst Blue Choice Opt Out Open Access
- Johns Hopkins Advantage MD PPO
- Anthem BCBS of VA Key Care POS/PPO/Indemnity
- United Medicare Private Fee-for-Service (PFFS) plans
- CareFirst Maryland Indemnity or PPO
- Aetna Better Health of VA
- Choice Fund PPO
- CareFirst BlueCross BlueShield Advantage Core/Enhanced
- Choice POS II Open Access
- Private Health Care Systems (PPO)
- United Healthcare Select HMO - EPO/NPP
- Core Essential (HMO)
- Johns Hopkins Advantage MD PLUS PPO
- IH-Open HMO Option
- 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
- CareFirst Blue Card Program
- Aetna Traditional Choice (PPO)
- United Healthcare Navigate Cardiac Global
- United Healthcare Choice Cardiac Global
- Cigna True Choice Medicare (PPO)
- Kaiser Permanente Signature
- Aetna Managed Choice (POS)
- OA Plus
- Anthem BCBS of VA HealthKeepers Plus
- IH-Open POS II
- Amerigroup DC Healthy Families
- HealthyBlue PPO
- United HealthCare Community Plan - Maryland Health Choice Program
- Great-West Healthcare POS/CIGNA
- IH-Open EPO Plus
- United Healthcare Choice Plus
- MedStar Family Choice - Maryland Health Choice
- Aetna VA Exchange
- Erickson Advantage Plans
- HumanaChoice Honor's plan PPO
- Cigna True Choice Plus Medicare (PPO)
- Cigna Preferred Medicare (HMO)
- Kaiser Permanente Select Cardiac Global
- CareFirst Group Medicare Advantage
- Cigna Achieve Medicare (HMO C-SNP)
- Aetna Medicare Advantage PFFS Plan
- Choice POS
- CareFirst BlueChoice HMO
- Choice POS II
- 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)
- Optima Family Care MCO - VA Medicaid MCO
- CareFirst MedStar PPO
- IH-Network Only Plus
- TRICARE East Select
- M.D. IPA Preferred (POS)
- CareFirst Federal Employee Program (Std. & Basic PPO)
- Anthem BCBS Medi Blue SNP
- HUMANA/Choice Care Medicare Plans (Choice, Gold Choice)
- First Health PPO
- Aetna Classic 5000PD
- UnitedHealthcare Medicare Advantage DSNP District of Columbia
- Aetna Open Choice (PPO)
- United Healthcare Select HMO-EPO/NPP Cardiac Global
- TRICARE for Life East
- Aetna Classic 3500
- UHC Passport
- MedStar Family Choice DC Healthy Families
- Coventry Health Care of Virginia
- MedStar Family Choice DC Healthcare Alliance
- CareFirst Dual Prime HMO-SNP
- IH-Open HMO
- IH-POS
- Aetna Advantage 6350
- Beech Street PPO
- Kaiser Permanente Medicare Advantage Signature and Select
- Blue Choice Advantage
- BlueChoice Open Access
- Aetna Signature Administrator PPO/TPA
- IH-Open POS Plus
- Options PPO Cardiac Global
- Private Fee-for-Service Plans (PFFS)
- Veterans Affairs Community Care Network
- Tricare Reserve Select
- CareFirst Administrators
- Anthem Federal Employee Program Standard
- OCI Direct (HMO)
- Humana Gold Plus HMO
- Humana Medicare Advantage - PPO
- UnitedHealthcare Individual Exchange Plans
- Network OA
- Aetna Premier 200PD
- 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
- Geisinger Medicare Advantage
- UnitedHealthcare Medicare Adv. Special Needs Plans
- Anthem BCBS Medi Blue Plus
- CareFirst FEP Blue Focus
- CIGNA POS/Network POS
- HighMark
- BCBS Out-of-State Medicare Plans (Blue Advantage)
- IH-HMO
- Kaiser Permaenete Signature - Added Choice Cardiac Global
- MD IPA (HMO) & MD IPA Preferred Cardiac Global
- CareFirst MedStar Select PPO
- United Student Resources
- CIGNA HMO & Network (HMO)
- CareFirst NASCO
- Anthem BCBS Medi Blue Dual Adv
- CIGNA Connect EPO
- First Health PPO
- AmeriHealth Caritas DC Healthcare Alliance
- Lasso Healthcare - Medicare Medical Savings Account
- CIGNA SureFit (HMO)
- United Healthcare Options (PPO)
- Aetna Basic
- CIGNA Indemnity
- CareFirst EPO
- Aetna Worker's Compensation Network
- TriWest Healthcare Alliance
- Alterwood Advanatge HMO & DSNP Plans
- CareFirst Blue Preferred PPO
- Aetna Student Health Insurance
- IH-Open Network Only Plus
- Medicare Direct
- Health Services for Children with Special Needs
- Maryland Physicians Care MCO
- Aetna Better Health of MD
- Police and Fire Clinic
- TRICARE East Prime
- UHC Group Medicare Advantage Plans (HMO, POS, PPO)
- Anthem Federal Employee Program Basic
- POS OA
- MultiPlan, Inc
- Johns Hopkins Advantage MD HMO
- UnitedHealthcare and AARP Medicare Complete Plans
- Cigna Alliance Medicare (HMO)
- IH-POS Plus
- 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
- Optimum Choice Preferred (POS)
- IH-Indemnity
- Aetna Advantage 5750
- NYC Medicare Advantage Plus
- Uniformed Services Family Health Plan
- IH-PPO
- CareFirst (NCA) Indemnity
- Healthy Blue (HMO, POS)
- CIGNA HMO Open Access
- Sentara Health
- AmeriHealth Caritas DC Healthy Families
- Aetna Medicare Advantage HMO & PPO Plans
- Aetna Classic 5000
- 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)