Gen Maruyama, M.D.
NPI 1518917392 · Diagnostic Radiology Physician · Lakewood, CO
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gen Maruyama, M.D. is a Diagnostic Radiology Physician provider in Lakewood, CO (NPI 1518917392).
Provider details
- NPI number
- 1518917392
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A62495 (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
20 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
1,118 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) |
|---|---|---|
| X-Ray of Chest, 1 View71045 | 165 | $9 |
| Ct Scan of Abdomen and Pelvis With Contrast74177 | 161 | $89 |
| Ct Scan of Chest Without Contrast71250 | 86 | $53 |
| X-Ray of Chest, 2 Views71046 | 80 | $11 |
| Mri Scan of Lower Spinal Canal Without Contrast72148 | 76 | $73 |
| Ct Scan of Blood Vessels of Chest With Contrast71275 | 73 | $88 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$224 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
- 2006-05-11
- Last updated
- 2017-01-04
Frequently asked questions
- What is Gen Maruyama's NPI number?
- Gen Maruyama's National Provider Identifier (NPI) is 1518917392, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gen Maruyama's specialty?
- Gen Maruyama is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Gen Maruyama located?
- Gen Maruyama's practice location on file with NPPES is 11600 W 2nd Pl, Lakewood, CO 80228-1527.
- What is Gen Maruyama's phone number?
- The practice phone number listed in the NPPES registry for Gen Maruyama is (720) 321-0000.
- Does Gen Maruyama accept Medicare?
- Gen Maruyama is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gen Maruyama's NPI active?
- Yes — Gen Maruyama's NPI (1518917392) is active in the NPPES registry as of the last update on 2017-01-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.