DR. JOHN GEMERY
NPI 1811921836
Radiology - Vascular & Interventional Radiology in Lebanon, NH
About Dr. John Gemery NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JOHN GEMERY (NPI 1811921836) is an individual vascular & interventional radiology provider in Lebanon, New Hampshire, licensed in New Hampshire (10387) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, is affiliated with Mary Hitchcock Memorial Hospital, and is a graduate of University Of Vermont College Of Medicine (1992).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 4
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
Dr. John Gemery 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
2Medicare enrollment records show John Gemery reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Lebanon, NH 03756
- Reassigned Medicare billing, New Hampshire enrollment
- Also billed through NPI 1386697803 (New Hampshire)
- 2,999 clinicians in this Medicare group
Lebanon, NH 03756
- Reassigned Medicare billing, New Hampshire enrollment
- 2,620 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.
Areas of Expertise CMS Part B claims 19
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mary Hitchcock Memorial Hospital
Acute Care Hospitals · Lebanon, NHCheshire Medical Center
Acute Care Hospitals · Keene, NHValley Regional Hospital
Critical Access Hospitals · Claremont, NHNortheastern Vermont Regional Hospital
Critical Access Hospitals · Saint Johnsbury, VTPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 03756 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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.
LEBANON, NH 03756
LEBANON, NH 03756
LEBANON, NH 03756
LEBANON, NH 03756
LEBANON, NH 03756
LEBANON, NH 03756
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 Gemery's NPI number?
The NPI number for John Gemery is 1811921836. It was assigned to this individual provider in the NPPES registry on July 10, 2006.
Where is John Gemery located?
John Gemery practices at 1 Medical Center Dr Department Of Radiology, Lebanon, NH 03756. The listed phone number is (603) 650-7230.
What is John Gemery's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Vascular & Interventional Radiology, with taxonomy code 2085R0204X.
Is John Gemery enrolled in Medicare?
Yes. John Gemery 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 John Gemery's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Gemery reassigns Medicare benefits to 2 organizations: Dartmouth-Hitchcock Clinic (Lebanon, NH) and Mary Hitchcock Memorial Hospital (Lebanon, NH). 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 John Gemery's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does John Gemery accept?
Health plans from Ambetter from NH Healthy Families list John Gemery 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 John Gemery affiliated with any hospitals?
According to CMS data, John Gemery is affiliated with Mary Hitchcock Memorial Hospital, Cheshire Medical Center, Valley Regional Hospital and Northeastern Vermont Regional Hospital.
When was this NPI record last updated?
The NPPES record for John Gemery was last updated on July 19, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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 Gemery · NPI 1811921836
Vascular & Interventional Radiology physician in Lebanon, New Hampshire. Individual provider, active in the CMS NPPES registry since July 10, 2006.
## Identity
- **NPI:** 1811921836 (Entity type: Individual)
- **Enumerated:** July 10, 2006
- **Primary specialty:** Radiology - Vascular & Interventional Radiology · taxonomy 2085R0204X
- **State license:** 10387 (New Hampshire)
- **Sole proprietor:** No
## Practice location
- **Address:** 1 MEDICAL CENTER DR, DEPARTMENT OF RADIOLOGY, Lebanon, NH 03756-1000
- **Phone:** (603) 650-7230 · **Fax:** (603) 650-5455
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Dartmouth-Hitchcock Clinic (NPI 1548210198, Lebanon, NH); Mary Hitchcock Memorial Hospital (NPI 1023092053, Lebanon, NH) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Vermont College Of Medicine, class of 1992
## Record status
- **NPPES last updated:** July 19, 2011
- **Other identifiers:** Medicare PIN RE493401 (NH); Medicare UPIN G76037; Medicaid 0RE4934 (VT); and 1 more
---
Source: [NPI Profile](https://npiprofile.com/npi/1811921836) · Data from the CMS NPPES public registry.