Doctor profile · Federal record

Dr. Erin Unger, MD

Interventional Cardiology Physician (CMS: Interventional Cardiology) · Internal Medicine Physician · Littleton, CO

  • NPI 1366705451
  • Accepts Medicare
  • MIPS 77.2 / 100 · 2023
  • 14 yrs in practice
  • Licensed in 2 states
  • Female
  • Group practice
  • No sanctions

Practice & contact

Operates at 2 locations .

NPPES Updated May 11, 2026
Primary practice
1000 Southpark Dr
Littleton, CO 801205654
(303) 744-1065
fax (720) 733-1699
Additional location
251 E Huron St
Chicago, IL 606112908
(312) 926-6895
Mailing address
Po Box 801106
Kansas City, MO 641801106

Credentials & registration

NPPES · NUCC
NPI registered
June 2012 — 14 yrs on file
Profile last updated
September 11, 2020
Year of graduation
2012 — 14 yrs since
Specialty taxonomy
207RI0011X — NUCC code
State licenses (2)
Colorado #DR.0063731 · Illinois #125061088

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1366705451. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
2,780
Distinct HCPCS
10
Medicare allowed
$229,939
HCPCS Description Services Patients Avg allowed
99214 Established patient office or other outpatient visit, 30-39 minutes 438 237 $130
G0422 Intensive cardiac rehabilitation; with or without continuous ecg monitoring with exercise, per session 363 178 $123
G0423 Intensive cardiac rehabilitation; with or without continuous ecg monitoring; without exercise, per session 281 137 $123
93306 Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 245 245 $69
93010 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 224 184 $8
93000 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 167 157 $15
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 138 71 $118
93793 Anticoagulant management of patient taking warfarin 129 68 $12
93298 Evaluation of cardiac rhythm monitor system, remote up to 30 days 125 69 $26
93306 Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 113 113 $68

In context: peer comparison

Among 5 peers in Littleton Interventional Cardiology Physician, average services per provider: 82. This provider delivers 34× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$118
Transactions
5
Manufacturers
5
Payer (manufacturer) Industry Txns Amount
Boston Scientific Corporation 1 $26.80
E.R. Squibb & Sons, L.L.C. 1 $25.12
Kiniksa Pharmaceuticals International, Plc 1 $22.90
Novo Nordisk INC 1 $21.78
Pfizer INC. 1 $21.59

By nature of payment

Food and Beverage
$118

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
1,818
Patients
609
Total drug cost
$392,783
Drug Type Claims Patients Total cost
Rosuvastatin Calcium Generic 278 101 $6,337
Atorvastatin Calcium Generic 245 86 $3,116
Metoprolol Succinate Generic 202 62 $3,848
Amlodipine Besylate Generic 180 54 $1,025
Eliquis (Apixaban) Brand 172 45 $217,175
Spironolactone Generic 117 50 $1,176
Jardiance (Empagliflozin) Brand 96 30 $114,678
Metoprolol Tartrate Generic 89 33 $634
Lisinopril Generic 78 24 $375
Clopidogrel (Clopidogrel Bisulfate) Brand 75 34 $1,496

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Erin Unger's medical specialty?
Dr. Erin Unger practices Interventional Cardiology Physician in Littleton, CO.
Where does Dr. Erin Unger practice?
Dr. Erin Unger practices at 1000 Southpark Dr, Littleton, CO 801205654. Office phone: 3037441065.
What is Dr. Erin Unger's NPI?
Dr. Erin Unger's National Provider Identifier (NPI) is 1366705451, issued by NPPES.
Does Dr. Erin Unger accept Medicare assignment?
Yes. Dr. Erin Unger accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Erin Unger commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Intensive cardiac rehabilitation; with or without continuous ecg monitoring with exercise (HCPCS G0422); Intensive cardiac rehabilitation; with or without continuous ecg monitoring; without exercise (HCPCS G0423). Source: CMS Medicare Physician & Other Practitioners file.