Leonard Vander Horn, PA
NPI 1437262391 · Surgical Physician Assistant · Morristown, NJ
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Leonard Vander Horn, PA is a Surgical Physician Assistant provider in Morristown, NJ (NPI 1437262391).
Provider details
- NPI number
- 1437262391
- Entity type
- Individual
- Primary specialty
- Surgical Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA
- Sex
- Male
- Sole proprietor
- No
- License
- MP054 (NJ)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
94 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Surgical Removal of Piece of Sac Covering Heart for Drainage33025 | 26 | $57 |
| Coronary Artery Bypass Using Artery Graft, 1 Graft33533 | 24 | $254 |
| Replacement of Aortic Valve on Heart-Lung Machine33405 | 16 | $272 |
| Harvest of Vein Using an Endoscope33508 | 16 | $2 |
| Coronary Artery Bypass Using Vein Or Artery Graft, 2 Grafts33518 | 12 | $57 |
Typical Medicare-allowed amounts for these services range $2–$272 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$35 across 2 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-16
- Last updated
- 2007-07-08
Frequently asked questions
- What is Leonard Vander Horn's NPI number?
- Leonard Vander Horn's National Provider Identifier (NPI) is 1437262391, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Leonard Vander Horn's specialty?
- Leonard Vander Horn is listed in the NPPES registry with a primary specialty of Surgical Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Leonard Vander Horn located?
- Leonard Vander Horn's practice location on file with NPPES is 95 Madicon Ave, Morristown, NJ 07960.
- What is Leonard Vander Horn's phone number?
- The practice phone number listed in the NPPES registry for Leonard Vander Horn is (973) 971-7300.
- Does Leonard Vander Horn accept Medicare?
- Leonard Vander Horn is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Leonard Vander Horn's NPI active?
- Yes — Leonard Vander Horn's NPI (1437262391) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.