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Edit this profileAt a glance
- 286 E Main St, Somerville, NJ 08876
About Dr. Unger
Based in Somerville, NJ, Jeffrey S. Unger, MD is listed in the NPI registry under gastroenterology. Jeffrey graduated from Boston University School of Medicine in 1994. Medicare claims data shows Jeffrey provided 930 services to 740 patients. The services billed most often include established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, insertion of needle into vein for collection of blood sample, and established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more. NPI 1104864487 identifies this record in the national registry.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (908) 223-1199
- Email not available
Is this your home address or personal number? Hide it
Practice Locations
286 E MAIN ST
Somerville, NJ 08876
Conditions Commonly Evaluated or Treated
Within Gastroenterology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Chronic conditions
Liver health
Specialized and cancer
- Short bowel syndrome
Wound care
Most searched conditions
- Acid reflux
- Celiac disease
- Crohn's disease
- Hemorrhoids
- IBS
- Swallowing difficulties
- Ulcerative colitis
Biliary and pancreas
- Acute pancreatitis
- Gallstones
- Pancreatic cysts
- Primary sclerosing cholangitis
Colon and anorectal
Esophagus and swallowing
- Barrett's esophagus
- Eosinophilic esophagitis
- Esophageal stricture
- Esophagitis
Functional bowel and motility
Liver
- Ascites
- Autoimmune hepatitis
- Cirrhosis
- Fatty liver disease
- Hemochromatosis
- Hepatitis B
- Hepatitis C
- Portal hypertension
Stomach and duodenum
- Functional dyspepsia
- Gastritis
- Gastroparesis
- H. pylori infection
- Peptic ulcer disease
Bowel & Colon
Digestive Symptoms
Gallbladder & Bile Ducts
- Blocked Bile Duct
Procedures & services
Advanced endoscopy
- EUS-guided biopsy
Biliary and pancreatic endoscopy
- Biliary sphincterotomy
- Endoscopic bile duct stone removal
Capsule and physiology testing
- Ambulatory reflux monitoring
- Capsule endoscopy
- Hydrogen and methane breath testing
- Anorectal manometry
- Esophageal manometry
Chronic illness
- Feeding tube care and troubleshooting
Clinical Nutrition
Diagnostic Testing
- 24-Hour Acid Reflux Test
- H. Pylori Breath Test
- SIBO Breath Test
- EUS-Guided Fine Needle Biopsy
Digestive
- Bowel Retraining Program
General surgery
Infection & Microbiology Tests
Liver procedures
- Paracentesis
- Esophageal variceal banding
- Liver elastography
Lower endoscopy
- Colon polyp removal
- Diagnostic colonoscopy
- Endoscopic control of gastrointestinal bleeding
- Flexible sigmoidoscopy
Nursing care
Nutrition & Digestion
Upper endoscopy
- Endoscopic mucosal resection
- Esophageal biopsy
- Esophageal dilation
- Stomach biopsy
- Endoscopic submucosal dissection
Most searched procedures
- Colonoscopy
- Endoscopy
- Gallbladder removal
- Hernia repair
- Liver biopsy
Treatments
- Stool Transplant
Procedures Most Often Billed to Medicare
930 services · 740 patients · 13 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Insertion of needle into vein for collection of blood sample | Procedure | 36415 |
126 | More often than most peers in Gastroenterology |
| Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43239 |
72 | As often as other peers in Gastroenterology |
| Biopsy of large bowel using a flexible endoscope | Procedure | 45380 |
59 | More often than most peers in Gastroenterology |
| Removal of polyps or growths of large bowel using an endoscope with mechanical snare | Procedure | 45385 |
34 | Less often than most peers in Gastroenterology |
| Diagnostic exam of large bowel using a flexible endoscope | Procedure | 45378 |
14 | Less often than most peers in Gastroenterology |
| Complete ultrasound scan of abdomen | Imaging | 76700 |
17 | Less often than most peers in Gastroenterology |
| Measurement of hydrogen in breath to test for stomach and bowel symptoms | Treatment | 91065 |
20 | As often as other peers in Gastroenterology |
| Ultrasound of abdomen and pelvis artery and vein blood flow | Treatment | 93976 |
17 | Too few peers to compare |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
391 | More than most peers in Gastroenterology |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
122 | More often than most peers in Gastroenterology |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other gastroenterologists at this location 2
Same specialty, same street address — most likely the same department or group.
Also at this address 2
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 23 related providers in 3 groups
Trained at Boston University School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1994 at Boston University School of Medicine 7
Providers who graduated from the same medical school in the same year.
Also performs Insertion of needle into vein for collection of blood sample 8
Providers in NJ who bill this service to Medicare most often.
Common questions
What does Dr. Unger specialize in?
Dr. Unger is a gastroenterologist in Somerville, NJ. That is the designation recorded for this NPI in the federal registry, where it is listed as “Gastroenterology”.
NPI registry
Where is Dr. Unger located?
Dr. Unger is listed at 286 E Main St, Somerville, NJ 08876. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Unger's phone number?
The number on file is (908) 223-1199. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Dr. Unger?
Dr. Unger's National Provider Identifier is 1104864487. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Unger go to medical school?
Dr. Unger attended Boston University School of Medicine, graduating in 1994. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Unger have?
Dr. Unger has 32 years experience. Calculated from a graduation year of 1994, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Unger do most often?
According to Medicare billing data, Dr. Unger performs procedures including insertion of needle into vein for collection of blood sample, biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope and biopsy of large bowel using a flexible endoscope; reads or performs imaging such as complete ultrasound scan of abdomen; provides treatments such as measurement of hydrogen in breath to test for stomach and bowel symptoms and ultrasound of abdomen and pelvis artery and vein blood flow, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Unger's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Unger. If this is you, claiming it is free.
Guide.md
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