DR. NOAH RUSSELL REES MASON MD
NPI 1003566795
Hospitalist in Aurora, CO
About Dr. Noah Russell Rees Mason Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. NOAH RUSSELL REES MASON MD (NPI 1003566795) is an individual hospitalist provider in Aurora, Colorado, licensed in Colorado (DR.0075523) and active in the NPI registry since March 2022. He is enrolled in Medicare PECOS and is a graduate of University Of Chicago, Pritzker School Of Medicine (2022).
NPPES Registry Identity
Specialties & Licenses 2
Accepted Insurance
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
Dr. Noah Russell Rees Mason Md 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 Noah Mason reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Aurora, CO 80045
- Reassigned Medicare billing, Colorado enrollment
- 4,283 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 80045 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 3
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
AURORA, CO 80045
AURORA, CO 80045
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 Noah Mason's NPI number?
The NPI number for Noah Mason is 1003566795. It was assigned to this individual provider in the NPPES registry on March 25, 2022.
Where is Noah Mason located?
Noah Mason practices at 13123 E 16th Ave # B065, Aurora, CO 80045. The listed phone number is (720) 777-2715.
What is Noah Mason's specialty?
The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.
Is Noah Mason enrolled in Medicare?
Yes. Noah Mason 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 Noah Mason's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Noah Mason reassigns Medicare benefits to University Physicians Incorporated (Aurora, 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 Noah Mason's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Noah Mason accept?
Health plans from Select Health list Noah Mason as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Noah Mason was last updated on August 14, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 months 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. Noah Russell Rees Mason, MD · NPI 1003566795
Hospitalist physician in Aurora, Colorado. Individual provider, active in the CMS NPPES registry since March 25, 2022.
## Identity
- **NPI:** 1003566795 (Entity type: Individual)
- **Enumerated:** March 25, 2022
- **Primary specialty:** Hospitalist · taxonomy 208M00000X
- **State license:** DR.0075523 (Colorado)
- **Sole proprietor:** No
## Practice location
- **Address:** 13123 E 16TH AVE # B065, Aurora, CO 80045-7106
- **Phone:** (720) 777-2715
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** University Physicians Incorporated (NPI 1083662498, Aurora, CO), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Chicago, Pritzker School Of Medicine, class of 2022
## Record status
- **NPPES last updated:** August 14, 2025
---
Source: [NPI Profile](https://npiprofile.com/npi/1003566795) · Data from the CMS NPPES public registry.