Lee Rosen, M.D.
NPI 1346295870 · Specialist · Santa Monica, CA
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Lee Rosen, M.D. is a Specialist provider in Santa Monica, CA (NPI 1346295870).
Provider details
- NPI number
- 1346295870
- Entity type
- Individual
- Primary specialty
- SpecialistOther Service Providers
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A49741 (CA)
Specialties & taxonomies
Other Service Providers
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
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
4,547 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 716 | $138 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 613 | $8 |
| Injection of Additional New Drug Or Substance Into Vein96375 | 528 | $17 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 353 | $10 |
| Administration of Chemotherapy Into Vein, 1 Hour Or Less96413 | 301 | $143 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 293 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 3 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Ibrutinibbrand: Imbruvica | 18 |
| Pantoprazole Sodium | 14 |
| Encorafenibbrand: Braftovi | 11 |
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
Registry dates
- Enumerated
- 2006-05-23
- Last updated
- 2012-09-24
Frequently asked questions
- What is Lee Rosen's NPI number?
- Lee Rosen's National Provider Identifier (NPI) is 1346295870, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lee Rosen's specialty?
- Lee Rosen is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).
- Where is Lee Rosen located?
- Lee Rosen's practice location on file with NPPES is 2020 Santa Monica Blvd, Santa Monica, CA 90404-2023.
- What is Lee Rosen's phone number?
- The practice phone number listed in the NPPES registry for Lee Rosen is (310) 633-8400.
- Does Lee Rosen accept Medicare?
- Lee Rosen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Lee Rosen's NPI active?
- Yes — Lee Rosen's NPI (1346295870) is active in the NPPES registry as of the last update on 2012-09-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.