Physician Profile
Unclaimed ProfileAbout MARUYAMA
Gen J Maruyama, M.D. is a healthcare provider in Lakewood, CO specializing in diagnostic radiology. Gen trained at Boston University School of Medicine, graduating in 1995. According to Medicare claims data, Gen cared for 1,101 Medicare patients across 1,118 services.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (720) 321-0000
- Email not available
Practice Locations
11600 W 2ND PL
Lakewood, CO 80228
Procedures Most Often Billed to Medicare
1,118 services · 1,101 patients · 23 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| X-ray of chest, 1 view | Imaging | 71045 |
165 |
| Ct scan of abdomen and pelvis with contrast | Imaging | 74177 |
161 |
| Ct scan of chest without contrast | Imaging | 71250 |
86 |
| X-ray of chest, 2 views | Imaging | 71046 |
80 |
| Mri scan of lower spinal canal without contrast | Imaging | 72148 |
76 |
| Ct scan of blood vessels of chest with contrast | Imaging | 71275 |
73 |
| Ct scan of abdomen and pelvis without contrast | Imaging | 74176 |
72 |
| Ct scan of upper spine without contrast | Imaging | 72125 |
70 |
| Ct scan of chest with contrast | Imaging | 71260 |
61 |
| Ct scan head or brain without contrast | Imaging | 70450 |
49 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other diagnostic radiology specialists at this location 3
Same specialty, same street address — most likely the same department or group.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other diagnostic radiology specialists in Lakewood 5
Same specialty, same city.
More connections — 23 related providers in 3 groups
Trained at Boston University School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1995 at Boston University School of Medicine 7
Providers who graduated from the same medical school in the same year.
Also performs X-ray of chest, 1 view 8
Providers in CO who bill this service to Medicare most often.
Common questions
What does Dr. Maruyama specialize in?
Dr. Maruyama is a diagnostic radiology in Lakewood, CO. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “DIAGNOSTIC RADIOLOGY”.
NPI registry
Where is Dr. Maruyama located?
Dr. Maruyama is listed at 11600 W 2ND PL, Lakewood, CO 80228. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Maruyama's phone number?
The number on file is (720) 321-0000. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Maruyama's NPI number?
Dr. Maruyama's National Provider Identifier is 1518917392. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Maruyama go to medical school?
Dr. Maruyama attended Boston University School of Medicine, graduating in 1995. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Maruyama been practicing?
Dr. Maruyama has 31 years experience. Calculated from a graduation year of 1995, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Maruyama do most often?
According to Medicare billing data, Dr. Maruyama performs imaging including x-ray of chest, 1 view and ct scan of abdomen and pelvis with contrast; provides treatments such as ultrasound study of one arm or leg veins with compression and maneuvers. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Maruyama confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Maruyama. If this is you, claiming it is free.
Guide.md
Is this your profile?
Verify your identity to control how patients — and AI assistants — describe you.
Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.