Alex John, M.D.
Gastroenterology Physician · Colchester, VT
Alex John, M.D. is a gastroenterology physician with a practice address in Colchester, Vermont, and NPI 1588634182, issued on Jan 25, 2006. Check the license (Vermont 0420008088, as entered in NPPES) on the Vermont Board of Medical Practice; the Medicare figures below come from public CMS files.
- Name
- Alex John
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 0420008088 VT
Self-reported in NPPES; status is on the state search - Practice location
- 875 Roosevelt Hwy, Colchester, VT 05446
- Phone
- (802) 864-7483
- Enumerated
- Jan 25, 2006
- Record last updated
- Aug 20, 2024
- Fax
- (802) 660-4337
- Medicaid ID
- 0009787 VT
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 35 in Vermont → Look up another NPI →
Also registered at 875 Roosevelt Hwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Cory Halliburton, M.D.Gastroenterology Physician1083767685
- Thomas McLaughlin, M.D.Gastroenterology Physician1689782815
- Deborah Moore, FNPNurse Practitioner1053503821
- Stephen Pitmon, D.D.S.General Practice Dentistry1437153798
Verify Alex John in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersVermont Board of Medical Practice
Search for license 0420008088Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
53% fewer Medicare Part D claims than the average gastroenterology physician in 2024
382 Medicare Part D claims for 162 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 28% of claims.
Most prescribed
- Gavilyte-G48 claims
- Omeprazole40 claims
- Mesalamine32 claims
- Sod Sulf-Potass Sulf-Mag Sulf26 claims
- Mesalamine Er21 claims
- Pantoprazole Sodium20 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Alex John among 35 gastroenterology physician records in Vermont
Alex John, M.D. is one of 35 gastroenterology physician records with a practice address in Vermont. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 17% of them.
- NPI issued2006 · 17% of these records are older, 34% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileNo · 66% of these records are
- Record last updated2024 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Vermont practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
6 gastroenterology physician records list a practice address in Colchester
They are 6 of the 472 NPPES records with a practice address in Colchester, and 35 gastroenterology physician records in Vermont.
All 35 in Vermont → Every provider in Colchester → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Cory Halliburton, M.D.Colchester, VT 054461083767685
- Alan Landau, M.D.Colchester, VT 054461003876368
- Thomas McLaughlin, M.D.Colchester, VT 054461689782815
- Jacek Mysior, M.D.Colchester, VT 054461811206246
- David Schwartz, MD, FACGColchester, VT 054461588649743
- Nicholas Ferrentino, M.D.Burlington, VT 054011336249077
- Eric Ganguly, MDBurlington, VT 054011346208907
- Edwin Goncharuk, D.O.Burlington, VT 054011255872453
Common questions
What is Alex John, M.D.'s NPI number?
Alex John, M.D.'s National Provider Identifier (NPI) is 1588634182, issued on Jan 25, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Alex John, M.D. located?
The NPPES record lists a practice address at 875 Roosevelt Hwy, Colchester, VT, 05446. Phone: (802) 864-7483. Providers update this record themselves, so call before visiting.
How can I verify Alex John, M.D.'s license?
NPPES lists Vermont license number 0420008088, as entered by the provider. Search the Vermont Board of Medical Practice at https://www.healthvermont.gov/systems/board-medical-practice. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Alex John, M.D. prescribe under Medicare Part D?
In 2024, Alex John, M.D. had 382 Medicare Part D claims for 162 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.