16 Years of Experience
Accepting patients
Online booking
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Dugan, Gastroenterologist in Houston, TX?
Dr. John Dugan, MD is a Gastroenterologist, who primarily practices in Houston, TX with 1 additional practice location. He has been practicing for over 16 years and is board certified. Dr. Dugan completed his residency at The University of Texas Houston Medical School. Dr. Dugan is fluent in English and Spanish, and is currently seeing new patients. Dr. Dugan’s practice accepts Kaiser Permanente, Medicare, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Dugan’s office at (713) 526-5511.
Where did Dr. Dugan go to medical school and complete their residency?
Fellowship: The University of Texas Houston Medical School
Residency: The University of Texas Houston Medical School
Medical School: Texas A&M University / Main Campus | University of Texas Health Science Center, Houston
Is Dr. Dugan board certified as a Gastroenterologist?
Yes, Dr. John Dugan, MD is board certified by the American Board of Internal Medicine since 2014, American Board of Internal Medicine since 2016
What languages does Dr. Dugan speak?
Dr. Dugan and their clinical team can communicate with patients in the following languages:
English
Spanish
What conditions does Dr. Dugan treat?
As a Gastroenterologist, Dr. Dugan diagnoses, treats, and manages a wide range of conditions. This condition information is derived from anonymized insurance claims and highlights the medical conditions most commonly treated by Dr. Dugan. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly.
Also known as:
- Colon Cancer Screening
- Health Screening
- Colorectal Cancer Screening (PDQ®)
- Screening Tests to Detect Colorectal Cancer and Polyps
- Tests to Detect Colorectal Cancer and Polyps
- Colorectal Cancer Screening
- Colonoscopy Screening
- Bowel Cancer Screening
ICD-10 Codes:
- Z1211: Encounter for screening for malignant neoplasm of colon
Also known as:
- Colon Polyps
- Colonic Polyps
- Colorectal Polyps
- Intestinal Polyps
- Bowel Polyps
ICD-10 Codes:
- Z86010: Personal history of colon polyps
Also known as:
- Diarrhea
- Loose stools
- Runny poop
- Frequent bowel movements
ICD-10 Codes:
- R197: Diarrhea, unspecified
Also known as:
- Difficulty Swallowing
- Swallowing Disorder
- Dysphagia
- Trouble swallowing
- Painful swallowing
ICD-10 Codes:
- R1310: Dysphagia, unspecified
Also known as:
- Upper Middle Abdominal Pain
- Abdominal Pain
- Epigastric pain
- Pain below breastbone
- Upper stomach pain
ICD-10 Codes:
- R1013: Epigastric pain
Also known as:
- Abnormal Bowel Movements
- Bowel Movement
- Unusual stool
- Changes in poop
- Fecal changes
ICD-10 Codes:
- R195: Other fecal abnormalities
Also known as:
- Heartburn
- Acid Reflux
- Indigestion
- GERD Symptoms
ICD-10 Codes:
- R12: Heartburn
What procedures does Dr. Dugan perform?
As a Gastroenterologist, Dr. Dugan performs a variety of medical procedures. This procedure information is derived from anonymized insurance claims and highlights the medical procedures most commonly performed by Dr. Dugan. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly.
Also known as:
- Colonoscopy with Biopsy
- Colonoscopy with Polyp Removal
- Diagnostic Colonoscopy with Biopsy
- Colonoscopy with Tissue Removal
- Colonoscopy
- Colorectal Cancer Screening Tests
- Flexible Colonoscopy
- Colon Biopsy
- Large Intestine Scope
- Colorectal Cancer Screening
- Flexible Colonoscopy with Polypectomy
- Colon Polyp Removal
- Colorectal Lesion Excision
- Colon Exam with Biopsy
- Lower Endoscopy
- Colon Cancer Screening
- Flexible colonoscopy with EMR
- Endoscopic mucosal resection (colon)
- Colon polyp removal during colonoscopy
CPT Codes:
- 45380: Colonoscopy, flexible; with biopsy, single or multiple
- 45385: Colonoscopy, flexible; with removal of tumor(s), polyp(s), or other lesion(s) by snare technique
- 45378: Colonoscopy, flexible; diagnostic, including collection of specimen(s) by brushing or washing, when performed (separate procedure)
- 45390: Colonoscopy, flexible; with endoscopic mucosal resection
Also known as:
- Upper Endoscopy with Biopsy
- Biopsy
- Endoscopy
- EGD with Biopsy
- Gastroscopy with Biopsy
- Esophagogastroduodenoscopy with Biopsy
CPT Codes:
- 43239: Esophagogastroduodenoscopy, flexible, transoral; with biopsy, single or multiple
Also known as:
- Colonoscopy with Injections
- EGD with Esophageal Balloon Dilation
- Colonoscopy
- Colorectal Cancer Screening Tests
- Flexible Colonoscopy with Injection
- Colon Scope with Medication
- Therapeutic Colonoscopy
- Upper Endoscopy with Esophageal Dilation
- Flexible Esophagoscopy with Balloon
- EGD with Balloon Widening
CPT Codes:
- 45381: Colonoscopy, flexible; with directed submucosal injection(s), any substance
- 43249: Esophagogastroduodenoscopy, flexible, transoral; with transendoscopic balloon dilation of esophagus (less than 30 mm diameter)
Does Dr. Dugan accept my insurance?
Dr. Dugan accepts most major insurance plans. Important: Please call our office at (713) 526-5511 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Dugan accept in Houston, TX?
Dr. Dugan in Houston, TX accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
Christian Healthcare Ministries
Crown Cork and Seal Company
CVS Health (formerly Aetna)
Express Scripts
Health Care Service Corporation (HCSC)
Medicare
Other Health Care Provider
Reserve National Insurance Co
State of Tennessee
UnitedHealthcare
View All Insurances
Where is Dr. Dugan's office located?
Would you like to schedule an appointment with Dr. John Dugan?
Dr. Dugan has appointments available at his Houston, TX office, as well as 1 other location. Please select a location, date, and time below.
What is Dr. Dugan's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Dugan's National Provider Identifier (NPI) number is 1154677755.
What common questions do patients ask about Dr. Dugan?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Dugan
What is Dr. John Dugan's specialty?
Dr. Dugan is a Gastroenterologist near Houston, TX. An internist focused on diagnosing and treating disorders of the digestive system, encompassing the stomach, intestines, liver, and gallbladder. This specialist manages conditions like abdominal pain, ulcers, diarrhea, cancer, and jaundice, and performs intricate diagnostic and therapeutic procedures using endoscopes to examine internal organs. Contact Dr. Dugan to book an appointment today.
Is this Dr. John Dugan affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Dugan is affiliated with Houston Methodist Hospital, Houston Methodist The Woodlands Hospital, Houston Methodist Sugar Land Hospital which are a Castle Connolly Top Hospitals. Castle Connolly Top Hospitals are healthcare institutions recognized for their excellence in specific medical procedures and overall patient care. They are identified through a rigorous peer nomination process, evaluating factors like patient outcomes, quality of care, and expertise. The list recognizes hospitals that excel in 20 or more specific medical procedures, representing the top 25% nationwide. Castle Connolly Top Hospitals
Where can I learn more about Gastroenterologist?
Explore Gastroenterologist with insights from trusted medical experts on EverydayHealth.com, where you'll find the most relevant content and helpful condition guides for up-to date information about symptoms, causes, diagnosis, treatment and more. See all our health guides to find trusted information on medical conditions from our experts at Everyday Health.
Is John Dugan accepting new patients in Houston, TX?
Yes, Dr. John Dugan is accepting new patients at this time.
Does Dr. John Dugan offer online booking?
Yes, you can use online booking to schedule an appointment with Dr. Dugan, or call (713) 526-5511 for more information.
How can I make an appointment with John Dugan?
Please contact Dr. Dugan's office at (713) 526-5511 for information regarding telehealth appointment availability or for scheduling assistance.
Which board certifications does Dr. John Dugan have?
Dr. John Dugan is certified by the American Board of Internal Medicine.
Other Gastroenterologist Near Houston, TX
Gastroenterologist
Accepting patients
Book Online
TelehealthDr. David Wolf, MD is a Gastroenterologist, who primarily practices in Houston, TX. He is board certified.
Houston, TX
BOOK APPOINTMENT
Gastroenterologist
Accepting patientsDr. Norman Frankel, MD is a Gastroenterologist, who primarily practices in Houston, TX. He is board certified.
Houston, TX
Gastroenterologist
Accepting patientsBook OnlineDr. Muhammad Zafar is a Gastroenterologist, who primarily practices in Houston, TX with 1 additional practice location. He has been practicing for over 17 years and is board certified.
Houston, TX
BOOK APPOINTMENT