Leonard Bielory, M.D.
NPI 1154352987 · Clinical & Laboratory Immunology (Allergy & Immunology) Physician · Springfield, NJ
Enrolled with Medicare as Practitioner - Allergy/Immunology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Leonard Bielory, M.D. is a Clinical & Laboratory Immunology (Allergy & Immunology) Physician provider in Springfield, NJ (NPI 1154352987).
Provider details
- NPI number
- 1154352987
- Entity type
- Individual
- Primary specialty
- Clinical & Laboratory Immunology (Allergy & Immunology) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 25MA04594700 (NJ)
Specialties & taxonomies
- Clinical & Laboratory Immunology (Allergy & Immunology) PhysicianPrimary207KI0005XLicense 25MA04594700 (NJ)
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 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
3,352 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) |
|---|---|---|
| Test for Allergy Using Combination of Methods With Drug Or Biological95018 | 880 | $7 |
| Test for Allergy Using Allergenic Extract95004 | 851 | $4 |
| Professional Service for Preparation and Provision of 1 Or More Antigens95165 | 690 | $16 |
| Professional Service for Multiple Injections of Allergen95117 | 275 | $14 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 206 | $123 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 87 | $183 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 1 distinct drug on file.
| Drug | Part D claims (2024) |
|---|---|
| Mepolizumabbrand: Nucala | 13 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$3,721 across 17 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
- 2006-07-06
- Last updated
- 2011-05-20
Frequently asked questions
- What is Leonard Bielory's NPI number?
- Leonard Bielory's National Provider Identifier (NPI) is 1154352987, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Leonard Bielory's specialty?
- Leonard Bielory is listed in the NPPES registry with a primary specialty of Clinical & Laboratory Immunology (Allergy & Immunology) Physician (Allopathic & Osteopathic Physicians).
- Where is Leonard Bielory located?
- Leonard Bielory's practice location on file with NPPES is 400 Mountain Ave, Springfield, NJ 07081-2515.
- What is Leonard Bielory's phone number?
- The practice phone number listed in the NPPES registry for Leonard Bielory is (973) 912-9817.
- Does Leonard Bielory accept Medicare?
- Leonard Bielory is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Leonard Bielory's NPI active?
- Yes — Leonard Bielory's NPI (1154352987) is active in the NPPES registry as of the last update on 2011-05-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.