Michael Del Rosario, M.D.
NPI 1891164307 · Hematology & Oncology Physician · Lakewood, CA
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Del Rosario, M.D. is a Hematology & Oncology Physician provider in Lakewood, CA (NPI 1891164307).
Provider details
- NPI number
- 1891164307
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A151675 (CA)
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
10 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
412 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 | 99 | $138 |
| Collection of Blood Sample From Implanted Device36591 | 59 | $32 |
| Infusion Into a Vein for Therapy, Prevention, Or Diagnosis, Additional Sequential Infusion, 1 Hour Or Less96367 | 54 | $32 |
| Administration of Chemotherapy Into Vein, 1 Hour Or Less96413 | 53 | $149 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 48 | $16 |
| Enhancing Oncology Model (eom) Monthly Enhanced Oncology Services (meos) Payment for Eom Enhanced ServicesM0010 | 47 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 6 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Letrozole | 80 | 34 |
| Anastrozole | 24 | 15 |
| Abiraterone Acetate | 19 | 11 |
| Pembrolizumabbrand: Keytruda | 15 | — |
| Ondansetron Hcl | 13 | — |
| Prednisone | 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 , 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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,362 across 96 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
Registry dates
- Enumerated
- 2015-09-15
- Last updated
- 2024-06-05
- Certified
- 2024-06-05
Frequently asked questions
- What is Michael Del Rosario's NPI number?
- Michael Del Rosario's National Provider Identifier (NPI) is 1891164307, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Del Rosario's specialty?
- Michael Del Rosario is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Del Rosario located?
- Michael Del Rosario's practice location on file with NPPES is 3300 E South St Ste 304, Lakewood, CA 90805-4594.
- What is Michael Del Rosario's phone number?
- The practice phone number listed in the NPPES registry for Michael Del Rosario is (562) 232-0550.
- Does Michael Del Rosario accept Medicare?
- Michael Del Rosario is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Del Rosario's NPI active?
- Yes — Michael Del Rosario's NPI (1891164307) is active in the NPPES registry as of the last update on 2024-06-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.