DR. JOHN LEWIS LEAHY M.D.
NPI 1598859480
Internal Medicine - Endocrinology, Diabetes & Metabolism in Burlington, VT
About Dr. John Lewis Leahy M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JOHN LEWIS LEAHY M.D. (NPI 1598859480) is an individual endocrinology, diabetes & metabolism provider in Burlington, Vermont and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 4
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. John Lewis Leahy M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show John Leahy reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Burlington, VT 05401
- Reassigned Medicare billing, Vermont enrollment
- 1,643 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 05401 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BURLINGTON, VT 05401
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 John Leahy's NPI number?
The NPI number for John Leahy is 1598859480. It was assigned to this individual provider in the NPPES registry on October 3, 2006.
Where is John Leahy located?
John Leahy practices at 1 S Prospect St 5th Floor - Endocrine, Burlington, VT 05401. The listed phone number is (802) 847-4576.
What is John Leahy's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.
Is John Leahy enrolled in Medicare?
Yes. John Leahy is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for John Leahy's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Leahy reassigns Medicare benefits to University Of Vermont Medical Center Inc (Burlington, VT). The 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 John Leahy's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for John Leahy was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years 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.
# Dr. John Lewis Leahy, M.D. · NPI 1598859480
Endocrinology, Diabetes & Metabolism physician in Burlington, Vermont. Individual provider, active in the CMS NPPES registry since October 3, 2006.
## Identity
- **NPI:** 1598859480 (Entity type: Individual)
- **Enumerated:** October 3, 2006
- **Primary specialty:** Internal Medicine - Endocrinology, Diabetes & Metabolism · taxonomy 207RE0101X
- **Sole proprietor:** No
## Practice location
- **Address:** 1 S PROSPECT ST, 5TH FLOOR - ENDOCRINE, Burlington, VT 05401-3456
- **Phone:** (802) 847-4576
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** University Of Vermont Medical Center Inc (NPI 1659309615, Burlington, VT), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 8, 2007
- **Other identifiers:** Medicare ID-Type Unspecified LEVN1388; Medicaid 01668928 (NY); Medicaid 0VN1388 (VT); and 1 more
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Source: [NPI Profile](https://npiprofile.com/npi/1598859480) · Data from the CMS NPPES public registry.