Leonard Bielory, M.D.
Clinical & Laboratory Immunology (Allergy & Immunology) Physician · Springfield, NJ
Leonard Bielory, M.D. is a clinical & laboratory immunology (allergy & immunology) physician with a practice address in Springfield, New Jersey, and NPI 1154352987, issued on Jul 6, 2006. Check the license (New Jersey 25MA04594700, as entered in NPPES) on the New Jersey State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Leonard Bielory
- Credential
- M.D.
- Primary taxonomy
- Clinical & Laboratory Immunology (Allergy & Immunology) Physician 207KI0005X
- License number
- 25MA04594700 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 400 Mountain Ave, Springfield, NJ 07081
- Phone
- (973) 912-9817
- Enumerated
- Jul 6, 2006
- Record last updated
- May 20, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (206) 333-1884
- Medicaid ID
- 1792504 NJ
- Medicare enrollment
- Enrolled (PECOS I20091228000491); accepts Medicare assignment
- Medical or professional school
- Rowan University School Of Osteopathic Medicine, 1980
- Entity
- Type 1 · individual
2 nearest clinical & laboratory immunology (allergy & immunology) physician records → All 3 in New Jersey → Look up another NPI →
Also registered at 400 Mountain Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ronit Himmelfarb, PAMedical Physician Assistant1538531389
- Chaya Rosenberg, RD, RN, CNLAdministrator Registered Nurse1669538351
Verify Leonard Bielory in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Jersey State Board of Medical Examiners
Search for license 25MA04594700Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
85% fewer Medicare Part D claims than the average clinical & laboratory immunology (allergy & immunology) physician in 2024
104 Medicare Part D claims for 32 beneficiaries, against an average of 678 among the 35 providers of this specialty who prescribed in Part D. Brand-name drugs were 39% of claims.
Most prescribed
- Nucala13 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $3,721.26
17 payments; by number, the most common kind was food and beverage; the largest payer was Regeneron Pharmaceuticals, Inc. The 33 providers of this specialty with any payment received $3,436.23 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Clinical & Laboratory Immunology (Allergy & Immunology) Physician providers in New Jersey
There are 3 clinical & laboratory immunology (allergy & immunology) physician records in New Jersey.
All 3 in New Jersey → Every provider in Springfield → Clinical & Laboratory Immunology (Allergy & Immunology) Physician nationwide →
The 2 clinical & laboratory immunology (allergy & immunology) physician records with the nearest ZIP codes
- James Oleske, M.D.Newark, NJ 071071679613830
- Richard Fox, M.D.Paramus, NJ 076521760571954
Common questions
What is Leonard Bielory, M.D.'s NPI number?
Leonard Bielory, M.D.'s National Provider Identifier (NPI) is 1154352987, issued on Jul 6, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Leonard Bielory, M.D. located?
The NPPES record lists a practice address at 400 Mountain Ave, Springfield, NJ, 07081. Phone: (973) 912-9817. Providers update this record themselves, so call before visiting.
How can I verify Leonard Bielory, M.D.'s license?
NPPES lists New Jersey license number 25MA04594700, as entered by the provider. Search the New Jersey State Board of Medical Examiners at https://newjersey.mylicense.com/verification/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Leonard Bielory, M.D. prescribe under Medicare Part D?
In 2024, Leonard Bielory, M.D. had 104 Medicare Part D claims for 32 beneficiaries; the average among clinical & laboratory immunology (allergy & immunology) physician prescribers was 678. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.