Doctor profile · Federal record

Dr. Robert Leventhal, MD

Gastroenterology Physician · Waterbury, CT

  • NPI 1275506214
  • 20 yrs on file
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
1312 W Main St, Ste 101
Waterbury, CT 06708
(203) 756-6422
fax (203) 756-2448
Mailing address
166 Waterbury RD, Ste 104
Prospect, CT 067121246

Credentials & registration

NPPES · NUCC
NPI registered
February 2006 — 20 yrs on file
Profile last updated
April 27, 2018
Specialty taxonomy
207RG0100X — NUCC code
State license (1)
Connecticut #029930
Medicaid
CT #001299305

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1275506214. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
411
Distinct HCPCS
10
Medicare allowed
$61,826
HCPCS Description Services Patients Avg allowed
99213 Established patient office or other outpatient visit, 20-29 minutes 73 66 $93
99214 Established patient office or other outpatient visit, 30-39 minutes 71 58 $134
45378 Diagnostic exam of large bowel using a flexible endoscope 63 63 $189
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk 49 49 $190
99204 New patient office or other outpatient visit, 45-59 minutes 47 47 $175
43235 Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope 42 42 $94
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare 24 23 $262
99203 New patient office or other outpatient visit, 30-44 minutes 20 20 $119
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 11 11 $104
45380 Biopsy of large bowel using a flexible endoscope 11 11 $207

In context: peer comparison

Among 6 peers in Waterbury Gastroenterology Physician, average services per provider: 50. This provider delivers 8.2× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$21
Transactions
1
Manufacturers
1
Payer (manufacturer) Industry Txns Amount
Merck Sharp & Dohme LLC 1 $21.41

By nature of payment

Food and Beverage
$21

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
979
Patients
292
Total drug cost
$195,481
Drug Type Claims Patients Total cost
Dicyclomine Hcl Generic 282 106 $10,252
Pantoprazole Sodium Generic 200 63 $3,047
Amitriptyline Hcl Generic 139 47 $2,730
Omeprazole Generic 71 24 $1,574
Dexlansoprazole Dr (Dexlansoprazole) Brand 55 14 $30,003
Diphenoxylate-Atropine (Diphenoxylate Hcl/Atropine) Brand 43 16 $1,569
Mesalamine Generic 33 11 $20,739
Metoclopramide Hcl Generic 30 11 $240
Esomeprazole Magnesium Generic 25 0 $1,384
Lansoprazole Generic 21 0 $1,215

Frequently asked questions

Auto-generated from federal data
What is Dr. Robert Leventhal's medical specialty?
Dr. Robert Leventhal practices Gastroenterology Physician in Waterbury, CT.
Where does Dr. Robert Leventhal practice?
Dr. Robert Leventhal practices at 1312 W Main St, Waterbury, CT 06708. Office phone: 2037566422.
What is Dr. Robert Leventhal's NPI?
Dr. Robert Leventhal's National Provider Identifier (NPI) is 1275506214, issued by NPPES.
What procedures does Dr. Robert Leventhal commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Established patient office or other outpatient visit (HCPCS 99214); Diagnostic exam of large bowel using a flexible endoscope (HCPCS 45378). Source: CMS Medicare Physician & Other Practitioners file.