GEN J MARUYAMA M.D.
NPI 1518917392
Radiology - Diagnostic Radiology in Lakewood, CO
About Gen J Maruyama M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GEN J MARUYAMA M.D. (NPI 1518917392) is an individual diagnostic radiology provider in Lakewood, Colorado, licensed in Colorado (44907) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS, is affiliated with Centura St. Catherine Hospital-garden City, and is a graduate of Boston University School Of Medicine (1995).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 5
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Gen J Maruyama M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Gen Maruyama reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Lakewood, CO 80228
- Reassigned Medicare billing, Colorado and Kansas enrollments
- 63 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 23
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Centura St. Catherine Hospital-Garden City
Acute Care Hospitals · Garden City, KSCentura St. Catherine-Dodge City
Acute Care Hospitals · Dodge City, KSPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 80228 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Reported Quality Measures
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Gen Maruyama's NPI number?
The NPI number for Gen Maruyama is 1518917392. It was assigned to this individual provider in the NPPES registry on May 11, 2006.
Where is Gen Maruyama located?
Gen Maruyama practices at 11600 W 2nd Pl, Lakewood, CO 80228. The listed phone number is (720) 321-0000.
What is Gen Maruyama's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.
Is Gen Maruyama enrolled in Medicare?
Yes. Gen Maruyama is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Gen Maruyama's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Gen Maruyama reassigns Medicare benefits to Colorado Imaging Associates P C (Lakewood, CO). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Gen Maruyama's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Gen Maruyama affiliated with any hospitals?
According to CMS data, Gen Maruyama is affiliated with Centura St. Catherine Hospital-Garden City and Centura St. Catherine-Dodge City.
When was this NPI record last updated?
The NPPES record for Gen Maruyama was last updated on January 4, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.