William N. Segal, MD

Gastroenterology

4.9

(563)

Accepting new patients

Sees patients age 18 and up

Princeton Medicine Physicians - Center for Digestive Health Plainsboro

View 1 additional location

Make an appointment Call 609-853-6390

Penn Medicine Provider

About me

Education and training

Medical School: University of Pennsylvania School of Medicine
Residency: Massachusetts General Hospital/Brigham and Women’s Hospital
Fellowship: University of California San Francisco - East Bay

What my patients think about me

Average Rating

4.9

563 reviews

Comments are submitted by patients and reflect their views and opinions. The comments are not endorsed by and do not necessarily reflect the views of Penn Medicine.

November 2025

5.0

great doc

October 2025

5.0

professional

October 2025

5.0

i like him

October 2025

5.0

short wait time, very attentive dr., pleasant demeanor .

Insurance accepted

Aetna

Amerihealth of NJ

Centivo

Cigna Healthcare

Claim Watcher (Homestead/INDECs)

Clover Health

Geisinger Health Plan

HealthAmerica / HealthAssurance, a Coventry Plan

Highmark Blue Shield

Highmark Wholecare (fka Gateway Health)

Horizon BC/BS of NJ

Humana Medicare

Humana Military (Tricare/Health Net Federal Services)

Imagine Health (Imagine Health 360)

Longevity Health Plan of NJ

Medicaid - New Jersey

Medicare - New Jersey

Oxford Health Plan

Preferred Health Care/Eliance

Qualcare

Rail Road Medicare/Palmetto GBA

UnitedHealthcare

US Family Health Plan

VA Insurance (Veteran's CCN)

Wellcare Health Plans of NJ

My Locations

Princeton Medicine Physicians - Center for Digestive Health Plainsboro

Princeton Medical Center

Medical Arts Pavilion, Suite 450

5 Plainsboro Road, Plainsboro, NJ, 08536

609-853-6390

Learn about location

Princeton Medicine Physicians - Center for Digestive Health Princeton

Suite 100

281 Witherspoon Street, Princeton, NJ, 08540

609-853-6390

Learn about location

Penn Medicine hospital privileges

Princeton Medical Center: Has privileges to treat patients in the hospital.

Dr. Segal is a Penn Medicine physician. In New Jersey, providers are affiliated with Penn Medicine through Clinical Health Care Associates of New Jersey or Princeton Healthcare Affiliated Physicians, PC.

Qualifications and experience

Board certifications

Treatments and Conditions

Achalasia
Acute pancreatitis
Anal fissure
Anemia

Ascites
Barrett’s esophagus
Bile duct cancer
Bowel incontinence
Celiac disease – sprue
Cirrhosis
Cowden syndrome
Crohn disease
Diarrhea
Diverticulitis
Eosinophilic esophagitis
Esophageal spasm
Esophagitis
Gallstones
Gastroesophageal reflux disease
Gastrointestinal stromal tumor (GIST)
Gastroparesis
Heartburn
Helicobacter pylori infection
Hemorrhoids
Hepatitis A
Hepatitis B
Hepatitis C
Hernia
Intestinal pseudo-obstruction
Irritable bowel syndrome
Jaundice
Liver cancer
Lynch syndrome
Mesenteric artery ischemia
Nausea and vomiting – adults
Obesity
Pancreatic cancer
Peptic ulcer
Plummer-Vinson syndrome
Primary biliary cholangitis
Primary sclerosing cholangitis
Short bowel syndrome
Small bowel bacterial overgrowth
Ulcerative colitis
Wilson’s disease
Zenker’s diverticulum
Zollinger-Ellison syndrome
Abdominal pain
Abnormal liver enzymes
Acid reflux
Alcoholic hepatitis
Appetite loss
Autoimmune hepatitis
Bile duct inflammation (Cholangitis)
Bile duct stone
Bile duct stricture
Biliary obstruction
Biliary stricture
Biliary tract disease
Bloating
Bowel obstruction
Chronic pancreatitis
Clostridium difficile infection
Collagenous colitis
Colonic inertia
Confusion
Constipation
Cystic fibrosis related liver disease
Elevated liver blood test
Enlarged liver
Eosinophilic gastroenteritis
Epigastric pain
Esophageal adenocarcinoma
Esophageal lymphoma
Esophageal motility disorder
Esophageal stricture
Esophageal varices
Esophageal webs and rings
Familial adenomatous polyposis
Fatty liver
Feeding disorders
Focal nodular hyperplasia
Food impaction
Food stuck on swallowing
Gastric carcinoid tumor
Gastric outlet obstruction
Gastric varices
Gastrointestinal bleeding (GI bleeding)
Gastrointestinal polyp
Globus sensation
Hemochromatosis
Hepatic encephalopathy (HE)
Hepatocellular carcinoma
Hereditary pancreatic cancer
Hyperamylasemia
Intestinal abscess
Intestinal fistula
Juvenile polyposis syndrome
Lactose intolerance
Liver adenoma
Liver cyst
Liver failure
Liver hemangioma
Liver lesion
Liver steatosis
Lymphocytic colitis
Malabsorption syndrome
Microscopic colitis
Multiple endocrine neoplasia (MEN I)
Nonalcoholic steatohepatitis (NASH)
Pancreatic cyst
Pancreatic pseudocyst
Pancreatitis
Peutz-Jeghers syndrome
Portal hypertension
Portal vein thrombosis (PVT)
Pouchitis
Radiation enteritis
Radiation proctitis
Rectal carcinoid tumor
Reflux laryngitis
Schatzki ring (Esophageal ring)
Stomach ulcer
Swallowing difficulty
Tracheoesophageal fistula (TOF)
Villous adenoma
Vomiting
Weight loss

(124)

About me

Education and training

What my patients think about me

563 reviews

Insurance accepted

Aetna

Amerihealth of NJ

Centivo

Cigna Healthcare

Claim Watcher (Homestead/INDECs)

Clover Health

Geisinger Health Plan

HealthAmerica / HealthAssurance, a Coventry Plan

Highmark Blue Shield

Highmark Wholecare (fka Gateway Health)

Horizon BC/BS of NJ

Humana Medicare

Humana Military (Tricare/Health Net Federal Services)

Imagine Health (Imagine Health 360)

Longevity Health Plan of NJ

Medicaid - New Jersey

Medicare - New Jersey

Oxford Health Plan

Preferred Health Care/Eliance

Qualcare

Rail Road Medicare/Palmetto GBA

UnitedHealthcare

US Family Health Plan

VA Insurance (Veteran's CCN)

Wellcare Health Plans of NJ

My Locations

Princeton Medicine Physicians - Center for Digestive Health Plainsboro

Princeton Medicine Physicians - Center for Digestive Health Princeton

Penn Medicine hospital privileges

Qualifications and experience

Board certifications

Treatments and Conditions

128Conditions

7Treatments