Roy Del-Rosario, M.D.
NPI 1740381870 · Psychiatry Physician · Lancaster, CA
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Roy Del-Rosario, M.D. is a Psychiatry Physician provider in Lancaster, CA (NPI 1740381870).
Provider details
- NPI number
- 1740381870
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A44914 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 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
1,627 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 1,523 | $92 |
| Psychotherapy With Evaluation and Management Visit, 30 Minutes90833 | 104 | $71 |
Typical Medicare-allowed amounts for these services range $71–$92 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 88 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Duloxetine Hcl | 721 | 110 |
| Alprazolam | 686 | 103 |
| Clonazepam | 628 | 111 |
| Trazodone Hcl | 558 | 92 |
| Bupropion Hclbrand: Bupropion Xl | 475 | 71 |
| Lorazepam | 440 | 82 |
| Quetiapine Fumarate |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,782 across 148 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
- 2006-09-25
- Last updated
- 2018-08-27
Frequently asked questions
- What is Roy Del-Rosario's NPI number?
- Roy Del-Rosario's National Provider Identifier (NPI) is 1740381870, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Roy Del-Rosario's specialty?
- Roy Del-Rosario is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Roy Del-Rosario located?
- Roy Del-Rosario's practice location on file with NPPES is 1672 W Avenue J, Lancaster, CA 93534.
- What is Roy Del-Rosario's phone number?
- The practice phone number listed in the NPPES registry for Roy Del-Rosario is (661) 726-2826.
- Does Roy Del-Rosario accept Medicare?
- Roy 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 Roy Del-Rosario's NPI active?
- Yes — Roy Del-Rosario's NPI (1740381870) is active in the NPPES registry as of the last update on 2018-08-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.