Diane Prager, MD
NPI 1003883562 · Hematology & Oncology Physician · Torrance, CA
Enrolled with Medicare as Practitioner - Medical Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Diane Prager, MD is a Hematology & Oncology Physician provider in Torrance, CA (NPI 1003883562).
Provider details
- NPI number
- 1003883562
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 036115134 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
1,597 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) |
|---|---|---|
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 272 | $8 |
| Infusion Into a Vein for Therapy, Prevention, Or Diagnosis, 1 Hour Or Less96365 | 141 | $73 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 122 | $9 |
| Infusion Into a Vein for Therapy, Prevention, Or Diagnosis, Each Additional Hour96366 | 118 | $23 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 110 | $16 |
| Injection of Additional New Drug Or Substance Into Vein96375 | 109 | $18 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 2 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Anastrozole | 33 | 13 |
| Apixabanbrand: Eliquis | 14 | — |
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.
Practice location
Mailing address
Additional practice locations (1)
- 2220 Manning AveLos Angeles, CA 90064-2002Phone: (309) 265-6644
Registry dates
- Enumerated
- 2006-03-03
- Last updated
- 2023-12-06
- Certified
- 2023-12-06
Frequently asked questions
- What is Diane Prager's NPI number?
- Diane Prager's National Provider Identifier (NPI) is 1003883562, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Diane Prager's specialty?
- Diane Prager is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Diane Prager located?
- Diane Prager's practice location on file with NPPES is 3445 Pacific Coast Hwy Ste 300, Torrance, CA 90505-6660.
- What is Diane Prager's phone number?
- The practice phone number listed in the NPPES registry for Diane Prager is (310) 325-8252.
- Does Diane Prager accept Medicare?
- Diane Prager is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Diane Prager's NPI active?
- Yes — Diane Prager's NPI (1003883562) is active in the NPPES registry as of the last update on 2023-12-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.