DR. JAMES KENNETH ROOKS JR. MD
NPI 1164471645
Emergency Medicine in Wheat Ridge, CO
About Dr. James Kenneth Rooks Jr. Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JAMES KENNETH ROOKS JR. MD (NPI 1164471645) is an individual emergency medicine provider in Wheat Ridge, Colorado, licensed in Colorado (42272) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS and maintains a secondary practice location in Denver.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Other Identifiers 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. James Kenneth Rooks Jr. Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
3Medicare enrollment records show James Rooks reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Wheat Ridge, CO 80033
- Reassigned Medicare billing, Colorado enrollment
- 91 clinicians in this Medicare group
Lakewood, CO 80228
- Reassigned Medicare billing, Colorado enrollment
- 468 clinicians in this Medicare group
Arvada, CO 80007
- Reassigned Medicare billing, Colorado enrollment
- 352 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 80033 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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 James Rooks's NPI number?
The NPI number for James Rooks is 1164471645. It was assigned to this individual provider in the NPPES registry on May 10, 2006.
Where is James Rooks located?
James Rooks practices at Lutheran Medical Center - Emegency Service Physicians 8300 W 38th Avenue, Wheat Ridge, CO 80033. The listed phone number is (303) 425-2087.
What is James Rooks's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is James Rooks enrolled in Medicare?
Yes. James Rooks is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for James Rooks's services?
According to the CMS Revalidation Reassignment List (October 2026 release), James Rooks reassigns Medicare benefits to 3 organizations: Emergency Service Physicians, Inc. (Wheat Ridge, CO), Usacs Of Colorado Inc (Lakewood, CO) and Usacs Community Emergency Services Of Colorado, Inc. (Arvada, CO). Each 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 James Rooks's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for James Rooks was last updated on April 30, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# Dr. James Kenneth Rooks Jr., MD · NPI 1164471645
Emergency Medicine physician in Wheat Ridge, Colorado. Individual provider, active in the CMS NPPES registry since May 10, 2006.
## Identity
- **NPI:** 1164471645 (Entity type: Individual)
- **Enumerated:** May 10, 2006
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 42272 (Colorado)
- **Sole proprietor:** No
## Practice location
- **Address:** LUTHERAN MEDICAL CENTER - EMEGENCY SERVICE PHYSICIANS, 8300 W 38TH AVENUE, Wheat Ridge, CO 80033
- **Phone:** (303) 425-2087
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Emergency Service Physicians, Inc. (NPI 1326097668, Wheat Ridge, CO); Usacs Of Colorado Inc (NPI 1720614217, Lakewood, CO); Usacs Community Emergency Services Of Colorado, Inc. (NPI 1053824979, Arvada, CO) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** April 30, 2021
- **Other identifiers:** Medicaid 99703262 (CO)
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Source: [NPI Profile](https://npiprofile.com/npi/1164471645) · Data from the CMS NPPES public registry.