Doctor profile · Federal record

Dr. Robert Mason, MD

Family Medicine Physician (CMS: Family Practice) · Windsor, CO

  • NPI 1821005992
  • Accepts Medicare
  • 34 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
1300 Main St
Windsor, CO 805505989
(970) 686-5646
fax (970) 686-5118

Credentials & registration

NPPES · NUCC
NPI registered
August 2006 — 20 yrs on file
Profile last updated
October 31, 2016
Year of graduation
1992 — 34 yrs since
Specialty taxonomy
207Q00000X — NUCC code
State license (1)
Colorado #32957
Medicaid
CO #01329572

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1821005992. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
453
Distinct HCPCS
6
Medicare allowed
$35,200
HCPCS Description Services Patients Avg allowed
99214 Established patient office or other outpatient visit, 30-39 minutes 212 130 $95
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit 93 93 $53
99213 Established patient office or other outpatient visit, 20-29 minutes 67 53 $72
90662 Influenza vaccine split virus, preservative free 32 32 $72
G0008 Administration of influenza virus vaccine 32 32 $31
99495 Transitional care management services for problem of at least moderate complexity 17 15 $114

In context: peer comparison

Among 11 peers in this city , average services per provider: 60. This provider delivers 7.6× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
1,217
Patients
432
Total drug cost
$19,726
Drug Type Claims Patients Total cost
Atorvastatin Calcium Generic 180 68 $1,627
Levothyroxine Sodium Generic 167 56 $2,869
Lisinopril Generic 124 40 $916
Losartan Potassium Generic 77 29 $1,154
Hydrochlorothiazide Generic 75 31 $495
Tamsulosin Hcl Generic 74 27 $1,631
Metformin Hcl Generic 68 24 $618
Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) Brand 65 14 $2,176
Gabapentin Generic 62 24 $3,677
Omeprazole Generic 62 26 $842

Frequently asked questions

Auto-generated from federal data
What is Dr. Robert Mason's medical specialty?
Dr. Robert Mason practices Family Medicine Physician in Windsor, CO.
Where does Dr. Robert Mason practice?
Dr. Robert Mason practices at 1300 Main St, Windsor, CO 805505989. Office phone: 9706865646.
What is Dr. Robert Mason's NPI?
Dr. Robert Mason's National Provider Identifier (NPI) is 1821005992, issued by NPPES.
Does Dr. Robert Mason accept Medicare assignment?
Yes. Dr. Robert Mason accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Robert Mason commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (HCPCS G0439); Established patient office or other outpatient visit (HCPCS 99213). Source: CMS Medicare Physician & Other Practitioners file.