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Dr. Daniel O'Brien, MD

Gastroenterology*
3.6 (13)
Map Pin Small Danbury, CT
Accepting new patients
16 years of experience

Offers telehealth

Overview of Dr. Daniel O'Brien, MD

Dr. Daniel O'Brien, MD is a Gastroenterology Specialist in Danbury, CT. They specialize in Gastroenterology, has 16 years of experience, and is board certified in Gastroenterology. They graduated from State University of New York Downstate Health Sciences University College of Medicine and is affiliated with Putnam Hospital Center and Danbury Hospital. Patients rated Dr. O'Brien an average 3.6 star rating.

Dr. O'Brien works at Practice in Danbury, CT with other offices in Carmel, NY. They are accepting new patients and accept Aetna, Anthem and Blue Cross Blue Shield as well as other major insurance plans. Please call ahead to schedule an appointment and to confirm all accepted insurance plans.

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Dr. O'Brien's Office Locations

  1. 1
    Danbury Hospital Medical Arts Center (dhmac)
    111 Osborne St, Danbury, CT 06810 Icon Directions Right Arrow Directions Phone Icon (203) 739-7038
  2. 2
    Nuvance Health Medical Practice PC - Carmel Ny
    150 ROUTE 52, Carmel, NY 10512 Icon Directions Right Arrow Directions Phone Icon (203) 739-7038
  3. 3
    Danbury Hospital
    24 Hospital Ave, Danbury, CT 06810 Icon Directions Right Arrow Directions Phone Icon (203) 739-7038
  4. 4
    Putnam Hospital
    670 Stoneleigh Ave, Carmel, NY 10512 Icon Directions Right Arrow Directions Phone Icon (845) 278-5683

Hospital Affiliations
Admitting Hospitals

Admitting hospitals are where the provider is credentialed to see patients, perform procedures, and send patients for continuous care.

  • Putnam Hospital Center
  • Danbury Hospital

Experience & Treatment Frequency

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What is treatment frequency?

Our treatment frequency feature helps you understand howoften a provider performs or treats a specificprocedure/condition compared to other doctors. Providersrank in one of four frequency categories:

Very HighFrequency
HighFrequency
NormalFrequency
May Perform

Specific procedures/conditions that don’t haveenough data are indicated with “May Perform”. We encourageyou to contact the provider with questions about theirexperience.

Search for conditions or procedures.
Enteritis
Non-Alcoholic Fatty Liver Disease
Noninfectious Gastroenteritis and Colitis
Non-Alcoholic Fatty Liver Disease
Noninfectious Gastroenteritis and Colitis

Treatment frequency



Many providers have expertise treating multiple conditions or procedures. FindCare uses a variety of data sources to determine which conditions or procedures a provider treats and their level of experience.
Enteritis
Non-Alcoholic Fatty Liver Disease
Noninfectious Gastroenteritis and Colitis
Abdominal Pain
Anal or Rectal Pain
Anemia
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Barrett's Esophagus
Chronic Gastritis
Colorectal Polyp
Constipation
Crohn's Disease
Diaphragmatic and Hiatal Hernia
Diarrhea
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Duodenal Ulcer
Dysphagia
Esophagitis
Gallstones
Gas-Bloat Syndrome
Gastric Ulcer
Gastritis
Gastroesophageal Reflux Disease (GERD)
Gastrointestinal Bleeding
Gastroptosis
Heartburn
Hemorrhoids
Inflammatory Bowel Disease
Intestinal Diverticulosis
Intestinal Ulcer
Irritable Bowel Syndrome
Nausea
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Reflux Esophagitis
Tobacco Use Disorder
Unexplained Weight Loss
Arterial Blood Gas Test (ABG)
Colonoscopy, Proctosigmoidoscopy, and Sigmoidoscopy
Duodenal Polypectomy
Electrocardiogram (EKG)
Endoscopy (Esophagus, Stomach, Small Intestine)
ERCP (Endoscopic Retrograde Cholangiopancreatography)
Flexible Sigmoidoscopy
Manometry
Removal or Destruction of Rectal or Intestinal Tumor (incl. Colonoscopy, Proctosigmoidoscopy, Sigmoidoscopy and Control of Hemorrhage)
Rigid Proctosigmoidoscopy
Acidosis
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Acute Deep Vein Thrombosis (DVT)
Acute Pharyngitis
Acute Upper Respiratory Infection
Acute Venous Embolism Thrombosis
ADHD and-or ADD
Alkalosis
All Headaches (incl. Migraine)
All Types of Food Poisoning
Anxiety
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Arthritis
Arthritis of the Elbow
Asphyxia and Hypoxemia
Asthma
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Atherosclerosis
Back Pain
Bedsores
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Benign Neoplasm of the Digestive System
Bile Duct Obstruction
Blood in Urine (Hematuria)
Bronchiectasis
Cachexia
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Candidiasis of Skin and Nails
Celiac Disease
Chest Pain
Chronic Neck Pain
Chronic Pain
Chronic Sinusitis
Cirrhosis
Colon Cancer
Colon Disorders
Congenital Anomaly Esophagus
Congenital Anomaly Intestine
COPD (Chronic Obstructive Pulmonary Disease)
Cough
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Deep Vein Thrombosis (DVT)
Dehydration
Diabetes Type 1
Diabetes Type 2
Diabetes With Renal Manifestations
Diabetic Polyneuropathy
Difficulty With Walking
Diffuse Esophageal Spasm
Dizziness
Dry Eyes
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Dry Skin
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Duodenitis
Dysentery
Dyslipidemia
E. coli Food Poisoning
Eczema and Contact Dermatitis
Emphysema
Enlarged Prostate (BPH)
Eosinophilic Esophagitis
Esophageal Achalasia and Cardiospasm
Esophageal Motility Disorders
Esophageal Ulcer
Esophageal Varices
Familial Adenomatous Polyposis
Familial Hypercholesterolemia
Fever
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Fibromyalgia
Gait Abnormality
Gastrointestinal Malabsorption
Gastrojejunal Ulcer
Gastroparesis
Gout
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Headache
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Heart Disease
Hemochromatosis
Hepatitis B - Immune Response
Hepatitis C
Hernia
  • View other providers who treat Hernia
Hiatal Hernia
Hidradenitis
Human Immunodeficiency Virus (HIV)
Hyperkalemia
Hyperlipidemia
Hypertension
Hypokalemia
Hypotension
Hypotension (Excluding Maternal)
Hypothyroidism
Indigestion
Infectious Diarrheal Disease
Intestinal Diverticulitis
Intestinal Obstruction
Intestinal Prolapse
Ischemic Colitis
Itchy Skin
Joint Pain
Lactose Intolerance
Leg and Foot Ulcers
Limb Swelling
Lipid Disorders
Liver Damage from Alcohol
Low Back Pain
Low Blood Oxygen Level
Malaise and Fatigue
Mallory-Weiss Syndrome
Malnutrition
Menstrual Disorders
Migraine
  • View other providers who treat Migraine
Neoplasm of Gastrointestinal Tract
Non-Neonatal Jaundice
Obesity
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Osteoarthritis
Osteoarthritis of Foot
Osteoarthritis of Shoulder
Osteoarthritis of Spine
Osteopenia
Osteoporosis
Overweight
Painful Urination (Dysuria)
Pancreatitis
Peptic Ulcer
Peripheral Nerve Disorders
Pharyngitis
Polyneuropathy
Polyuria
  • View other providers who treat Polyuria
Pouchitis
Primary Biliary Cholangitis
Pyloric Stenosis
Rash
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Rectal Ulcer
Restless Leg Syndrome
Retroperitoneum Cancer
Sexually Transmitted Diseases (STDs)
Shortness of Breath
Sinus Bradycardia
Sinus Tachycardia
Sinusitis
Sleep Apnea
Stomal Ulcer
Thyroid Goiter
Ulcerative Colitis
Upper Digestive Tract Cancer
Urinary Incontinence
Urinary Tract Infection (UTI)
Venous Insufficiency
Vertigo
  • View other providers who treat Vertigo
Viral Hepatitis
Vitamin B Deficiency
Vitamin B12 Deficiency
Vitamin D Deficiency
Vitamin_Deficiency
Vomiting Disorders
Wheezing
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Anoscopy
  • View other providers who treat Anoscopy
Colon Cancer Screening
Colonoscopy
Colorectal Cancer Screening
Diabetes Counseling
Endoscopy
Fecal Occult Blood Test for Colorectal Cancer
Gallbladder Scan
Hemorrhoidectomy or Excision of Anal Tags
Hepatitis A Screening
Hepatitis B Virus Screening
Hepatitis C Virus Screening
Hepatitis Screening
Impedance Testing
Instrumental Diagnostic Evaluation for Dysphagia
Liver Biopsy
Liver Function Test
pH Probe
  • View other providers who treat pH Probe
Screening Colonoscopy
VAP Lipid Testing
Wireless pH Testing
Check your insurance
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    Please double-check when making an appointment.

    View All Accepted Carriers

    • Aetna
    • Anthem
    • Blue Cross Blue Shield
    • Buckeye Community Health Plan
    • CareFirst Blue Cross Blue Shield
    • Cigna
    • Commercial Insurance Company
    • Connecticare
    • Empire Blue Cross Blue Shield
    • First Health
    • Harvard Pilgrim Health Care
    • Humana
    • Locals (any local)
    • MagnaCare
    • Midwest Health Plan
    • MultiPlan
    • Oxford Health Plans
    • UnitedHealthCare

    * Please verify this information when scheduling an appointment.

    Ratings & Reviews
    Reviews are displayed in date order and collected from patients who have agreed to reporting accurate and fair reviews. Providers with no reviews may have a new FindCare profile, or no submitted reviews on FindCare yet.

    Learn more about how FindCare's ratings and reviews work

    3.6
    Average provider rating
    Based on 13 ratings
    Patient Ratings (13)
    5 Star
    (7)
    4 Star
    (1)
    3 Star
    (1)
    2 Star
    (1)
    1 Star
    (3)
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    Dr. O'Brien's Office & Staff

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    • Total wait time (waiting & exam rooms)

    Experience with Dr. O'Brien

    • Level of trust in provider's decisions
    • How well provider explains medical condition(s)
    • How well provider listens and answers questions
    • Hpends appropriate amount of time with patients

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    About Dr. Daniel O'Brien, MD

    Specialties*
    • Gastroenterology

    • *Healthline does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.
    Specialties*
    Years of Experience
    • 16 years of experience
    Years of Experience
    Years of experience represents how long a provider has been practicing in their field since graduating from medical school. Not all providers will have this information available.

    Languages Spoken
    • English
    Languages Spoken
    NPI Number
    • 1518132505
    NPI Number
    A National Provider Identifier (NPI) is a unique 10-digit identifier issued by the government to healthcare providers.

    Education & Certifications

    Fellowship
    • State University of New York Downstate Health Sciences University College of Medicine
    Fellowship
    Medical Education
    • State University of New York Downstate Health Sciences University College of Medicine
    Medical Education
    Board Certifications
    • Gastroenterology
    Board Certifications
    What’s a board certification and why is it important that my provider has one?

    A board certification represents a provider’s dedication to ongoing training in one or more specialties, including the completion of intensive exams. While not all specialties have board certifications, if your provider does have one they’ve taken the extra step to master their specialty and to keep up with the latest advancements in their field.

    Frequently Asked Questions

    Dr. Daniel O'Brien, MD is accepting new patients on Healthline FindCare. You can check to see if Dr. O'Brien is offering online scheduling or call the provider’s office for more information.

    Dr. O'Brien has indicated that they do offer telehealth services. Please call the provider’s office at for more information.

    13 patients have reviewed Dr. O'Brien. The overall rating for this provider is 3.6. You can read verified reviews and ratings and leave your own review based on your experience with Dr. O'Brien.

    Whether a person prefers to schedule an appointment online or over the phone with Dr. O'Brien, there are benefits to both methods. A person calling to schedule an with Dr. O'Brien appointment can ask questions about the practice, provider availability, conditions treated, procedures performed, and if their insurance carrier is accepted. While online scheduling is quicker, easier, allows one to view a wide range of appointment times, and may provide the ability to sync with a personal calendar.

    Telehealth Options
    This provider has not specified a telehealth appointment method. Would you still like to make an appointment with Dr. O'Brien, or would you like to choose another provider and have an online appointment right now?
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    Call now to make an appointment
    (203) 739-7038

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