Noah Russell Rees Mason, MD
Hospitalist Physician · Aurora, CO
Noah Russell Rees Mason, MD is a hospitalist physician with a practice address in Aurora, Colorado, and NPI 1003566795, issued on Mar 25, 2022. Check the license (Colorado DR.0075523, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Noah Russell Rees Mason
- Credential
- MD
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- DR.0075523 CO
Self-reported in NPPES; status is on the state search - Practice location
- 13123 E 16TH Ave # B065, Aurora, CO 80045
- Phone
- (720) 777-2715
- Enumerated
- Mar 25, 2022
- Record last updated
- Aug 14, 2025
- Medicare enrollment
- Enrolled (PECOS I20250829002738); accepts Medicare assignment
- Medical or professional school
- University Of Chicago, Pritzker School Of Medicine, 2022
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 806 in Colorado → Look up another NPI →
Also registered at 13123 E 16TH Ave # B065
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Alex Shimony, MDStudent in an Organized Health Care Education/Training Program1396420287
Verify Noah Russell Rees Mason in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license DR.0075523Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- University Physicians IncorporatedAurora, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Noah Russell Rees Mason among 806 hospitalist physician records in Colorado
Noah Russell Rees Mason, MD is one of 806 hospitalist physician records with a practice address in Colorado. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2022, is newer than 94% of them.
- NPI issued2022 · 94% of these records are older, 2% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated2022 · median 2012 among the 622 with a school on file
- Record last updated2025 · 38% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
269 hospitalist physician records list a practice address in Aurora
They are 269 of the 17,400 NPPES records with a practice address in Aurora, and 806 hospitalist physician records in Colorado.
All 806 in Colorado → Every provider in Aurora → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Martin Alswang, M.D.Aurora, CO 800451215981881
- Debra Anoff, MDAurora, CO 800451528090115
- Justin Beverly, M.D.Aurora, CO 800451699795211
- Marisha Burden, M.D.Aurora, CO 800451740233113
- Vineet Chopra, MDAurora, CO 800451144289679
- Tracey Clark, M.D.Aurora, CO 800451568413953
- Lee Engelbreth, MDAurora, CO 800451912944190
- Jeannette Guerrasio, MDAurora, CO 800451083648679
Common questions
What is Noah Russell Rees Mason, MD's NPI number?
Noah Russell Rees Mason, MD's National Provider Identifier (NPI) is 1003566795, issued on Mar 25, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Noah Russell Rees Mason, MD located?
The NPPES record lists a practice address at 13123 E 16TH Ave # B065, Aurora, CO, 80045. Phone: (720) 777-2715. Providers update this record themselves, so call before visiting.
How can I verify Noah Russell Rees Mason, MD's license?
NPPES lists Colorado license number DR.0075523, as entered by the provider. Search the Colorado Medical Board at https://dpo.colorado.gov/Medical. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.