Elan Diamond, M.D.
NPI 1659530608 · Hematology & Oncology Physician · Bloomfield, NJ
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Elan Diamond, M.D. is a Hematology & Oncology Physician provider in Bloomfield, NJ (NPI 1659530608).
Provider details
- NPI number
- 1659530608
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 25MA09722600 (NJ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
18 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
5,193 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 1,150 | $138 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 554 | $9 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 491 | $195 |
| Injection of Additional New Drug Or Substance Into Vein96375 | 453 | $17 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 420 | $10 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 31 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 862 | 153 |
| Darolutamidebrand: Nubeqa | 812 | 109 |
| Abiraterone Acetate | 735 | 110 |
| Relugolixbrand: Orgovyx | 307 | 34 |
| Megestrol Acetate | 173 | 72 |
| Enzalutamidebrand: Xtandi | 159 | 25 |
| Potassium Chloride | 77 | 22 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$16,134 across 10 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
Additional practice locations (1)
- 718 Teaneck RoadRegional Cancer CenterTeaneck, NJ 07666-4245Phone: (201) 227-6008Fax: (201) 227-6002
Registry dates
- Enumerated
- 2008-06-05
- Last updated
- 2022-06-06
- Certified
- 2022-06-06
Frequently asked questions
- What is Elan Diamond's NPI number?
- Elan Diamond's National Provider Identifier (NPI) is 1659530608, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Elan Diamond's specialty?
- Elan Diamond is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Elan Diamond located?
- Elan Diamond's practice location on file with NPPES is 1515 Broad St Ste B120, Bloomfield, NJ 07003-3059.
- What is Elan Diamond's phone number?
- The practice phone number listed in the NPPES registry for Elan Diamond is (973) 873-7000.
- Does Elan Diamond accept Medicare?
- Elan Diamond is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Elan Diamond's NPI active?
- Yes — Elan Diamond's NPI (1659530608) is active in the NPPES registry as of the last update on 2022-06-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.