Doctor profile · Federal record

Dr. Alex John, M.D.

Gastroenterology Physician · Colchester, VT

  • NPI 1588634182
  • 20 yrs on file
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
875 Roosevelt Hwy, Suite 132
Colchester, VT 054464460
(802) 864-7483
fax (802) 660-4337

Credentials & registration

NPPES · NUCC
NPI registered
January 2006 — 20 yrs on file
Profile last updated
August 20, 2024
Specialty taxonomy
207RG0100X — NUCC code
State license (1)
Vermont #0420008088
Medicaid
VT #0009787

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1588634182. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
257
Distinct HCPCS
8
Medicare allowed
$38,480
HCPCS Description Services Patients Avg allowed
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare 86 86 $231
45380 Biopsy of large bowel using a flexible endoscope 35 35 $114
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 31 30 $95
99214 Established patient office or other outpatient visit, 30-39 minutes 31 27 $124
99213 Established patient office or other outpatient visit, 20-29 minutes 21 21 $88
G0105 Colorectal cancer screening; colonoscopy on individual at high risk 20 20 $173
G0500 Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito 19 19 $5
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk 14 14 $174

In context: peer comparison

Among 1 peers in this city , average services per provider: 32. This provider delivers 8.0× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
267
Patients
92
Total drug cost
$417,075
Drug Type Claims Patients Total cost
Omeprazole Generic 51 15 $898
Gavilyte-G (Peg3350/Sod Sulf,bicarb,cl/Kcl) Brand 46 46 $849
Pantoprazole Sodium Generic 31 0 $865
Mesalamine Generic 28 0 $24,271
Peg 3350-Electrolyte (Sodium Chloride/Nahco3/Kcl/Peg) Brand 18 18 $514
Carvedilol Generic 17 0 $62
Sulfasalazine Dr (Sulfasalazine) Brand 15 0 $481
Balsalazide Disodium Generic 13 0 $805
Peg-3350 And Electrolytes (Peg3350/Sod Sulf,bicarb,cl/Kcl) Brand 13 13 $227
Stelara (Ustekinumab) Brand 13 0 $370,264

Frequently asked questions

Auto-generated from federal data
What is Dr. Alex John's medical specialty?
Dr. Alex John practices Gastroenterology Physician in Colchester, VT.
Where does Dr. Alex John practice?
Dr. Alex John practices at 875 Roosevelt Hwy, Colchester, VT 054464460. Office phone: 8028647483.
What is Dr. Alex John's NPI?
Dr. Alex John's National Provider Identifier (NPI) is 1588634182, issued by NPPES.
What procedures does Dr. Alex John commonly perform?
Top Medicare-reported procedures in 2023: Removal of polyps or growths of large bowel using an endoscope with mechanical snare (HCPCS 45385); Biopsy of large bowel using a flexible endoscope (HCPCS 45380); Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (HCPCS 43239). Source: CMS Medicare Physician & Other Practitioners file.