GL
20 Years of Experience
Accepting patients
Who is Dr. Lesser, Gastroenterologist in Newark, NJ?
Dr. Gregory Lesser, MD is a Gastroenterologist, who primarily practices in Newark, NJ with 1 additional practice location. He has been practicing for over 20 years and is board certified by the American Board of Internal Medicine. Dr. Lesser is fluent in English and Spanish, and is currently seeing new patients. Dr. Lesser’s practice accepts Medicaid, Medicare, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Lesser’s office at (973) 645-0000.
Where did Dr. Lesser go to medical school and complete their residency?
Medical School: American University of The Caribbean; Plymouth, Montserrat
Is Dr. Lesser board certified in Gastroenterologist?
Yes, Dr. Gregory Lesser, MD is board certified by the American Board of Internal Medicine
What languages does Dr. Lesser speak?
Dr. Lesser and their clinical team can communicate with patients in the following languages:
English
Spanish
What conditions does Dr. Lesser treat?
As a Gastroenterologist, Dr. Lesser 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. Lesser. 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:
- Abdominal Bloating
- Gas
- Gas in the Digestive Tract
- Bloated Stomach
- Swollen Belly
- Gaseous Distension
ICD-10 Codes:
- R140: Abdominal distension (gaseous)
Also known as:
- Upper Middle Abdominal Pain
- Pelvic Pain
- Upper Abdominal Pain
- Abdominal Pain
- Epigastric pain
- Pain below breastbone
- Upper stomach pain
- Lower belly pain
- Pain in lower abdomen
- Abdominal discomfort
- Pain in upper belly
- Epigastric discomfort
ICD-10 Codes:
- R1013: Epigastric pain
- R1030: Lower abdominal pain, unspecified
- R1010: Upper abdominal pain, unspecified
Also known as:
- Diaphragmatic Hernia
- Diaphragmatic Hernia with Obstruction
- Hernia
- Intestinal Obstruction
- Hiatal Hernia
- Hernia of the Diaphragm
- Obstructed Diaphragmatic Hernia
ICD-10 Codes:
- K449: Diaphragmatic hernia without obstruction or gangrene
- K440: Diaphragmatic hernia with obstruction, without gangrene
Also known as:
- Constipation
- Slow Transit Constipation
- Difficulty Passing Stool
- Infrequent Bowel Movements
- Hard Stools
- Chronic Constipation
- Sluggish Bowel
- Colonic Inertia
ICD-10 Codes:
- K5900: Constipation, unspecified
- K5901: Slow transit constipation
Also known as:
- Acid Reflux
- GERD
- Acid Reflux (GER & GERD) in Adults
- Acid Reflux (GER & GERD) in Children
- Acid Reflux (GER & GERD) in Infants
- Gastroesophageal Reflux
- Heartburn
- Indigestion
ICD-10 Codes:
- K219: Gastro-esophageal reflux disease without esophagitis
Also known as:
- Stomach Inflammation
- Stomach Disorder
- Gastritis & Gastropathy
- Gastritis
- Inflamed stomach lining
- Stomach lining inflammation
ICD-10 Codes:
- K2970: Gastritis, unspecified, without bleeding
- K2900: Acute gastritis without bleeding
Also known as:
- Barrett's Esophagus
- Esophagus Disorder
- Barrett’s Esophagus
- Barrett's condition
- Esophageal metaplasia
ICD-10 Codes:
- K2270: Barrett's esophagus without dysplasia
Also known as:
- First Degree Hemorrhoids
- Hemorrhoids
- Internal hemorrhoids
- Grade 1 hemorrhoids
- Mild hemorrhoids
ICD-10 Codes:
- K640: First degree hemorrhoids
Also known as:
- Large Intestine Diverticulosis
- Diverticulosis and Diverticulitis
- Diverticular Disease
- Colon Diverticula
- Pockets in the Colon
ICD-10 Codes:
- K5730: Diverticulosis of large intestine without perforation or abscess without bleeding
Also known as:
- Anemia
- Low Red Blood Cell Count
- Low Hemoglobin
- Iron deficiency
ICD-10 Codes:
- D649: Anemia, unspecified
Also known as:
- Change in Bowel Habits
- Bowel Movement
- Altered Bowel Habits
- Irregular Bowel Movements
- Changes in Pooping
ICD-10 Codes:
- R194: Change in bowel habit
Also known as:
- High Liver Enzymes
- ALT Blood Test
- AST Test
- Elevated ALT
- Elevated AST
- Abnormal liver function test
ICD-10 Codes:
- R7401: Elevation of levels of liver transaminase levels
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:
- Other Non-Infectious Stomach and Colon Inflammation
- Digestive Disease
- Non-Infectious Colitis
- Non-Infectious Enteritis
- Digestive Tract Inflammation
ICD-10 Codes:
- K5289: Other specified noninfective gastroenteritis and colitis
Which procedures does Dr. Lesser perform as a Gastroenterologist?
As a Gastroenterologist, procedures performed by a Dr. Gregory Lesser may include:
- Colonoscopy
- Colonoscopy Consultation
- Colorectal Cancer Screening
- Endoscopic Ultrasound
- Endoscopy / Endoscopic Ultrasound
- Gastric Balloon
- Gastric Stimulator Implantation Consultation
- Gastric Stimulator Implantation Follow Up
For detailed information, please contact Dr. Lesser's office.
Does Dr. Lesser accept my insurance?
Dr. Lesser accepts most major insurance plans. Important: Please call our office at (973) 645-0000 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Lesser accept in Newark, NJ?
Dr. Lesser in Newark, NJ accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
All Other Third Party
Braven Health
Carepoint Health
CVS Health (formerly Aetna)
EmblemHealth
Express Scripts
Horizon BlueCross BlueShield
Medicare
State of Maine
UnitedHealthcare
View All Insurances
Where is Dr. Lesser's office located?
What is Dr. Lesser's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Lesser's National Provider Identifier (NPI) number is 1023096575.
What common questions do patients ask about Dr. Lesser?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Lesser
What is Dr. Gregory Lesser's specialty?
Dr. Lesser is a Gastroenterologist near Newark, NJ. 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. Lesser to book an appointment today.
Is this Dr. Gregory Lesser affiliated with a ranked Castle Connolly Top Hospital?
No, Lesser is not affiliated with a Castle Connolly Top Hospital, but is affiliated with the following hospitals: Saint Michaels Medical Center. Castle Connolly Top Hospitals 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 Gregory Lesser accepting new patients in Newark, NJ?
Yes, Dr. Gregory Lesser is accepting new patients at this time.
Does Dr. Gregory Lesser offer online booking?
Please contact Dr. Lesser's office at (973) 645-0000 for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with Gregory Lesser?
Please contact Dr. Lesser's office at (973) 645-0000 for information regarding telehealth appointment availability or for scheduling assistance.
Which board certifications does Dr. Gregory Lesser have?
Dr. Gregory Lesser is certified by the American Board of Internal Medicine.
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