Joshua Rosenberg, MD
NPI 1124280896 · Hematology & Oncology Physician · Ventura, CA
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Joshua Rosenberg, MD is a Hematology & Oncology Physician provider in Ventura, CA (NPI 1124280896).
Provider details
- NPI number
- 1124280896
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
17 yrs in NPPES registry
- Profile completeness25% of score
83% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
5,415 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) |
|---|---|---|
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 939 | $8 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 732 | $17 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 605 | $192 |
| Injection of Additional New Drug Or Substance Into Vein96375 | 506 | $17 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 460 | $136 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 29 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Anastrozole | 146 | 31 |
| Lenalidomidebrand: Revlimid | 51 | — |
| Prednisone | 48 | 13 |
| Ondansetron Hcl | 44 | 23 |
| Rivaroxabanbrand: Xarelto | 36 | 11 |
| Apixabanbrand: Eliquis | 36 | — |
| Acyclovir | 35 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$525 across 1 record (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
- 2008-06-25
- Last updated
- 2015-02-09
Frequently asked questions
- What is Joshua Rosenberg's NPI number?
- Joshua Rosenberg's National Provider Identifier (NPI) is 1124280896, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joshua Rosenberg's specialty?
- Joshua Rosenberg is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Joshua Rosenberg located?
- Joshua Rosenberg's practice location on file with NPPES is 3291 Loma Vista Rd, Ventura, CA 93003-3099.
- What is Joshua Rosenberg's phone number?
- The practice phone number listed in the NPPES registry for Joshua Rosenberg is (805) 652-6218.
- Does Joshua Rosenberg accept Medicare?
- Joshua Rosenberg is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Joshua Rosenberg's NPI active?
- Yes — Joshua Rosenberg's NPI (1124280896) is active in the NPPES registry as of the last update on 2015-02-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.