Robert Benson, M.D.
NPI 1033188529 · Specialist · Westlake, CA
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Robert Benson, M.D. is a Specialist provider in Westlake, CA (NPI 1033188529).
Provider details
- NPI number
- 1033188529
- Entity type
- Individual
- Primary specialty
- SpecialistOther Service Providers
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- G39172 (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
964 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) |
|---|---|---|
| X-Ray of Chest, 1 View71045 | 487 | $9 |
| Nuclear Medicine Studies of Heart Muscle at Rest and With Stress and Spect78452 | 125 | $72 |
| Exercise Or Drug-Induced Heart Stress Test With Electrocardiogram (ecg) With Review By Physician93018 | 78 | $13 |
| Ct Scan of Chest Without Contrast71250 | 33 | $53 |
| Ct Scan Head Or Brain Without Contrast70450 | 32 | $41 |
| Ct Scan of Abdomen and Pelvis Without Contrast74176 | 29 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 1 distinct drug on file.
| Drug | Part D claims (2024) |
|---|---|
| Trazodone Hcl | 12 |
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
- 2006-03-16
- Last updated
- 2023-03-07
Frequently asked questions
- What is Robert Benson's NPI number?
- Robert Benson's National Provider Identifier (NPI) is 1033188529, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Benson's specialty?
- Robert Benson is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).
- Where is Robert Benson located?
- Robert Benson's practice location on file with NPPES is 4195 E Thousand Oaks Blvd. #235, Westlake, CA 91362-3812.
- What is Robert Benson's phone number?
- The practice phone number listed in the NPPES registry for Robert Benson is (805) 719-4820.
- Does Robert Benson accept Medicare?
- Robert Benson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Robert Benson's NPI active?
- Yes — Robert Benson's NPI (1033188529) is active in the NPPES registry as of the last update on 2023-03-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.