John Gemery
NPI 1811921836 · Vascular & Interventional Radiology Physician · Lebanon, NH
Enrolled with Medicare as Practitioner - Interventional Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Gemery is a Vascular & Interventional Radiology Physician provider in Lebanon, NH (NPI 1811921836).
Provider details
- NPI number
- 1811921836
- Entity type
- Individual
- Primary specialty
- Vascular & Interventional Radiology PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
- License
- 10387 (NH)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
595 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Use of a Drug to Induce Depression of Consciousness By Physician Performing a Procedure (5 Years Or Older), Initial 15 Minutes99152 | 193 | $12 |
| Fluoroscopic Guidance for Insertion Or Removal of Central Vein Access Device77001 | 43 | $17 |
| Ultrasonic Guidance for Needle Placement76942 | 37 | $29 |
| Ultrasonic Guidance for Blood Vessel Access76937 | 36 | $13 |
| Core Needle Biopsy of Lung Or Center Cavity of Chest (mediastinum), Accessed Through Skin32408 | 29 | $145 |
| Injection of Contrast Through Abdominal Cavity Tube for X-Ray Study49424 | 27 | $26 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-10
- Last updated
- 2011-07-19
Frequently asked questions
- What is John Gemery's NPI number?
- John Gemery's National Provider Identifier (NPI) is 1811921836, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Gemery's specialty?
- John Gemery is listed in the NPPES registry with a primary specialty of Vascular & Interventional Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is John Gemery located?
- John Gemery's practice location on file with NPPES is 1 Medical Center Dr, Lebanon, NH 03756-1000.
- What is John Gemery's phone number?
- The practice phone number listed in the NPPES registry for John Gemery is (603) 650-7230.
- Does John Gemery accept Medicare?
- John Gemery is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Gemery's NPI active?
- Yes — John Gemery's NPI (1811921836) is active in the NPPES registry as of the last update on 2011-07-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.