Doctor profile · Federal record

Dr. Mark Duncan, MD

Hospitalist Physician (CMS: Hospitalist) · Internal Medicine Physician · Aurora, CO

  • NPI 1407275233
  • Accepts Medicare
  • MIPS 93.3 / 100 · 2023
  • 12 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
12605 E 16Th Ave
Aurora, CO 80045
(720) 848-0000
Mailing address
Po Box 110429
Aurora, CO 800420429

Credentials & registration

NPPES · NUCC
NPI registered
April 2014 — 12 yrs on file
Profile last updated
August 16, 2018
Year of graduation
2014 — 12 yrs since
Specialty taxonomy
208M00000X — NUCC code
State license (1)
Colorado #DR.0060581

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1407275233. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
250
Distinct HCPCS
7
Medicare allowed
$28,064
HCPCS Description Services Patients Avg allowed
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 100 34 $120
32555 Aspiration of fluid from chest cavity using imaging guidance 44 37 $113
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 27 13 $80
99239 Hospital discharge day management, more than 30 minutes 25 25 $116
49083 Drainage of fluid from abdominal cavity using imaging guidance 23 18 $102
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 19 19 $175
76604 Ultrasound scan of chest 12 11 $28

In context: peer comparison

Among 49 peers in Aurora Hospitalist Physician, average services per provider: 62. This provider delivers 4.0× the peer median.

Frequently asked questions

Auto-generated from federal data
What is Dr. Mark Duncan's medical specialty?
Dr. Mark Duncan practices Hospitalist Physician in Aurora, CO.
Where does Dr. Mark Duncan practice?
Dr. Mark Duncan practices at 12605 E 16Th Ave, Aurora, CO 80045. Office phone: 7208480000.
What is Dr. Mark Duncan's NPI?
Dr. Mark Duncan's National Provider Identifier (NPI) is 1407275233, issued by NPPES.
Does Dr. Mark Duncan accept Medicare assignment?
Yes. Dr. Mark Duncan accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Mark Duncan commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Aspiration of fluid from chest cavity using imaging guidance (HCPCS 32555); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232). Source: CMS Medicare Physician & Other Practitioners file.