Liam G. Gannon, MD
Family Medicine Physician · Vergennes, VT
Liam G. Gannon, MD is a family medicine physician with a practice address in Vergennes, Vermont, and NPI 1780648691, issued on Apr 17, 2006. Check the license (Vermont 042-0010022, as entered in NPPES) on the Vermont Board of Medical Practice; the Medicare figures below come from public CMS files.
- Name
- Liam G. Gannon
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- 042-0010022 VT
0420010022 VT
Self-reported in NPPES; status is on the state search - Practice location
- 100A Macdonough Dr, Vergennes, VT 05491
- Phone
- (802) 877-0157
- Enumerated
- Apr 17, 2006
- Record last updated
- Apr 16, 2024
- Medicaid IDs
- 0VN2298 VT
OVN2298 VT - Medicare enrollment
- Enrolled (PECOS I20050722000440); accepts Medicare assignment
- Medical or professional school
- Saint Louis University School Of Medicine, 1997
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 443 in Vermont → Look up another NPI →
Verify Liam G. Gannon in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersVermont Board of Medical Practice
Search for license 042-0010022Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
100% fewer Medicare Part D claims than the average family medicine physician in 2024
11 Medicare Part D claims for 11 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
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.
3 hospitals and group practices
- Integritas Emergency Physician Services LLCMc Leansboro, IL
- Solace Health Medical Group IncWilliston, VT
- Thomas H Boyd Memorial HospitalCarrollton, IL · Critical Access Hospitals
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov).
Liam G. Gannon among 443 family medicine physician records in Vermont
Liam G. Gannon, MD is one of 443 family medicine 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 11% of them.
- NPI issued2006 · 11% of these records are older, 43% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1997 · median 2005 among the 280 with a school on file
- Record last updated2024 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Vermont practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
8 family medicine physician records list a practice address in Vergennes
They are 8 of the 48 NPPES records with a practice address in Vergennes, and 443 family medicine physician records in Vermont.
All 443 in Vermont → Every provider in Vergennes → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Catherine Ayers, M.D.Vergennes, VT 054911114269503
- Timothy Bicknell, MDVergennes, VT 054911801885298
- Dylan Estes, M.D.Vergennes, VT 054911003278144
- Kate GeschwindVergennes, VT 054911699356576
- Daniel Huber, M.D.Vergennes, VT 054911164491221
- Jennifer Kaufman, MDVergennes, VT 054911063643518
- Donald Robinson, MDVergennes, VT 054911750346326
- Tram Lam, DNP, FNP-CSwanton, VT 054881114884426
Common questions
What is Liam G. Gannon, MD's NPI number?
Liam G. Gannon, MD's National Provider Identifier (NPI) is 1780648691, issued on Apr 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Liam G. Gannon, MD located?
The NPPES record lists a practice address at 100A Macdonough Dr, Vergennes, VT, 05491. Phone: (802) 877-0157. Providers update this record themselves, so call before visiting.
How can I verify Liam G. Gannon, MD's license?
NPPES lists Vermont license number 042-0010022, 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 Liam G. Gannon, MD prescribe under Medicare Part D?
In 2024, Liam G. Gannon, MD had 11 Medicare Part D claims for 11 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.