LIAM G. GANNON MD
NPI 1780648691
Family Medicine in Vergennes, VT
About Liam G. Gannon Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
LIAM G. GANNON MD (NPI 1780648691) is an individual family medicine provider in Vergennes, Vermont, licensed in Vermont (042-0010022) and active in the NPI registry since April 2006. He is enrolled in Medicare PECOS, is affiliated with Thomas H Boyd Memorial Hospital, and is a graduate of Saint Louis University School Of Medicine (1997).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Liam G. Gannon Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
6Medicare enrollment records show Liam Gannon reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Carrollton, IL 62016
- Reassigned Medicare billing, Illinois enrollment
- 22 clinicians in this Medicare group
Pawnee City, NE 68420
- Reassigned Medicare billing, Nebraska enrollment
- 11 clinicians in this Medicare group
Seward, NE 68434
- Reassigned Medicare billing, Nebraska enrollment
- 45 clinicians in this Medicare group
Minot, ND 58701
- Reassigned Medicare billing, North Dakota enrollment
- Also billed through NPI 1518988948 (North Dakota)
- 108 clinicians in this Medicare group
Redwood City, CA 94063
- Reassigned Medicare billing, Vermont enrollment
- 8 clinicians in this Medicare group
- Reassigned Medicare billing, Illinois enrollment
- 208 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Hospital Affiliations CMS Care Compare 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Thomas H Boyd Memorial Hospital
Critical Access Hospitals · Carrollton, ILHamilton Memorial Hospital
Critical Access Hospitals · Mcleansboro, ILMarshall Browning Hospital
Critical Access Hospitals · Du Quoin, ILCottage Hospital
Critical Access Hospitals · Woodsville, NHMckenzie County Healthcare Systems Inc
Critical Access Hospitals · Watford City, NDPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 05491 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Liam Gannon's NPI number?
The NPI number for Liam Gannon is 1780648691. It was assigned to this individual provider in the NPPES registry on April 17, 2006.
Where is Liam Gannon located?
Liam Gannon practices at 100A Macdonough Dr, Vergennes, VT 05491. The listed phone number is (802) 877-0157.
What is Liam Gannon's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Liam Gannon enrolled in Medicare?
Yes. Liam Gannon is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Liam Gannon's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Liam Gannon reassigns Medicare benefits to 6 organizations: Thomas H. Boyd Memorial Hospital (Carrollton, IL), Pawnee County Memorial Hospital (Pawnee City, NE), Memorial Health Care Systems (Seward, NE), Mckenzie County Healthcare Systems Inc (Minot, ND), Solace Health Medical Group Inc (Redwood City, CA) and 1 more organization, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Liam Gannon's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Liam Gannon accept?
Health plans from Blue Cross Blue Shield of North Dakota, Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Nebraska, Blue Cross and Blue Shield of Texas and Oscar Insurance Company and 3 other insurers list Liam Gannon as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Liam Gannon affiliated with any hospitals?
According to CMS data, Liam Gannon is affiliated with Thomas H Boyd Memorial Hospital, Hamilton Memorial Hospital, Marshall Browning Hospital, Cottage Hospital and Mckenzie County Healthcare Systems Inc.
When was this NPI record last updated?
The NPPES record for Liam Gannon was last updated on September 20, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 49 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Liam G. Gannon, MD · NPI 1780648691
Family Medicine physician in Vergennes, Vermont. Individual provider, active in the CMS NPPES registry since April 17, 2006.
## Identity
- **NPI:** 1780648691 (Entity type: Individual)
- **Enumerated:** April 17, 2006
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** 042-0010022 (Vermont)
- **Sole proprietor:** No
## Practice location
- **Address:** 100A MACDONOUGH DR, Vergennes, VT 05491-1057
- **Phone:** (802) 877-0157
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 6 organizations under Medicare reassignment (form CMS-855R): Thomas H. Boyd Memorial Hospital (NPI 1811096811, Carrollton, IL); Pawnee County Memorial Hospital (NPI 1992759781, Pawnee City, NE); Memorial Health Care Systems (NPI 1699845016, Seward, NE); Mckenzie County Healthcare Systems Inc (NPI 1053127548, Minot, ND); Solace Health Medical Group Inc (NPI 1801669924, Redwood City, CA); and 1 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Saint Louis University School Of Medicine, class of 1997
## Record status
- **NPPES last updated:** September 20, 2026
- **Other identifiers:** Medicaid 0VN2298 (VT); Medicaid OVN2298 (VT)
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Source: [NPI Profile](https://npiprofile.com/npi/1780648691) · Data from the CMS NPPES public registry.