Robert Anthony Mason, MD
Family Medicine Physician · Windsor, CO
Robert Anthony Mason, MD is a family medicine physician with a practice address in Windsor, Colorado, and NPI 1821005992, issued on Aug 2, 2006. Check the license (Colorado 32957, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Robert Anthony Mason
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 32957 CO
Self-reported in NPPES; status is on the state search - Practice location
- 1300 Main St, Windsor, CO 80550
- Phone
- (970) 686-5646
- Enumerated
- Aug 2, 2006
- Record last updated
- Oct 31, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (970) 686-5118
- Medicaid ID
- 01329572 CO
- Medicare enrollment
- Enrolled (PECOS I20060112000418); accepts Medicare assignment
- Medical or professional school
- University Of Texas Medical School At San Antonio, 1992
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 3,563 in Colorado → Look up another NPI →
Also registered at 1300 Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kristen Arnesen, APNFamily Nurse Practitioner1770256406
- Robert Flores, M.A., LPCProfessional Counselor1427410380
- Susan Garvin, LCSWClinical Social Worker1275804163
- Teresa Hergert, N.P.Nurse Practitioner1689728917
- Jacob Holmquist, FNPNurse Practitioner1588502660
- Jonathan Kary, MDFamily Medicine Physician1811982788
Verify Robert Anthony Mason in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license 32957Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
1% more Medicare Part D claims than the average family medicine physician in 2024
3,589 Medicare Part D claims for 381 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 210 claims were for opioids.
Most prescribed
- Atorvastatin Calcium206 claims
- Levothyroxine Sodium202 claims
- Hydrochlorothiazide106 claims
- Lisinopril97 claims
- Tamsulosin Hcl84 claims
- Trazodone Hcl83 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Banner Health Physicians Colorado LLCEaton, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Robert Anthony Mason among 3,563 family medicine physician records in Colorado
Robert Anthony Mason, MD is one of 3,563 family medicine physician records with a practice address in Colorado. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 12% of them.
- NPI issued2006 · 12% of these records are older, 56% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated1992 · median 2008 among the 2,077 with a school on file
- Record last updated2016 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
23 family medicine physician records list a practice address in Windsor
They are 23 of the 476 NPPES records with a practice address in Windsor, and 3,563 family medicine physician records in Colorado.
All 3,563 in Colorado → Every provider in Windsor → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Egle Bakanauskas, M.D.Windsor, CO 805501902950223
- Robert Bradley, M.D.Windsor, CO 805501508910894
- Troy Buchholz, M.D.Windsor, CO 805501154315976
- Michael Carey, M.D.Windsor, CO 805501760536064
- Karah Cloxton, MDWindsor, CO 805501528326576
- Jonathan Kary, MDWindsor, CO 805501811982788
- Trina Kessinger, MDWindsor, CO 805501356347785
- Margaret Lesage, MDWindsor, CO 805501225242225
Common questions
What is Robert Anthony Mason, MD's NPI number?
Robert Anthony Mason, MD's National Provider Identifier (NPI) is 1821005992, issued on Aug 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Robert Anthony Mason, MD located?
The NPPES record lists a practice address at 1300 Main St, Windsor, CO, 80550. Phone: (970) 686-5646. Providers update this record themselves, so call before visiting.
How can I verify Robert Anthony Mason, MD's license?
NPPES lists Colorado license number 32957, 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.
How much does Robert Anthony Mason, MD prescribe under Medicare Part D?
In 2024, Robert Anthony Mason, MD had 3,589 Medicare Part D claims for 381 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
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.