Doctor profile · Federal record
Dr. Mark Berntsen, MD
Internal Medicine Physician (CMS: Internal Medicine) · Greeley, CO
- NPI 1730166687
- Accepts Medicare
- 33 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1900 16Th St
Greeley, CO 806315114
(970) 350-2438
fax (970) 350-2473
Credentials & registration
- NPI registered
- December 2005 — 21 yrs on file
- Profile last updated
- July 1, 2013
- Year of graduation
- 1993 — 33 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- Colorado #35897
- Medicaid
- CO #01358977
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1730166687. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
2,632
Distinct HCPCS
10
Medicare allowed
$173,346
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 746 | 492 | $84 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 745 | 541 | $63 | |
G0439 |
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 509 | 509 | $54 | |
G0008 |
Administration of influenza virus vaccine | 135 | 134 | $31 | |
90662 |
Influenza vaccine split virus, preservative free | 129 | 128 | $72 | |
93793 |
Anticoagulant management of patient taking warfarin | 77 | 19 | $12 | |
83036 |
Hemoglobin a1c level | 64 | 58 | $10 | |
90480 |
Admn sarscov2 vacc 1 dose | 36 | 36 | $41 | |
91320 |
Sarscv2 vac 30mcg trs-suc im | 36 | 36 | $128 | |
93005 |
Routine electrocardiogram (ecg) using at least 12 leads with tracing | 32 | 31 | $6 |
In context: peer comparison
Among 12 peers in Greeley Internal Medicine Physician, average services per provider: 109. This provider delivers 24× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
11,274
Patients
3,164
Total drug cost
$153,974
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Levothyroxine Sodium | Generic | 1,433 | 371 | $22,141 |
| Atorvastatin Calcium | Generic | 1,240 | 352 | $15,538 |
| Amlodipine Besylate | Generic | 1,175 | 330 | $8,406 |
| Lisinopril | Generic | 1,172 | 326 | $9,698 |
| Losartan Potassium | Generic | 1,011 | 283 | $15,962 |
| Omeprazole | Generic | 780 | 222 | $13,178 |
| Metformin Hcl | Generic | 603 | 167 | $5,967 |
| Metoprolol Succinate | Generic | 568 | 157 | $10,363 |
| Tamsulosin Hcl | Generic | 543 | 147 | $10,579 |
| Gabapentin | Generic | 539 | 161 | $12,685 |
Hospital affiliations
Frequently asked questions
What is Dr. Mark Berntsen's medical specialty?
Dr. Mark Berntsen practices Internal Medicine Physician in Greeley, CO.
Where does Dr. Mark Berntsen practice?
Dr. Mark Berntsen practices at 1900 16Th St, Greeley, CO 806315114. Office phone: 9703502438.
What is Dr. Mark Berntsen's NPI?
Dr. Mark Berntsen's National Provider Identifier (NPI) is 1730166687, issued by NPPES.
Does Dr. Mark Berntsen accept Medicare assignment?
Yes. Dr. Mark Berntsen accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Mark Berntsen commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99213); Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (HCPCS G0439). Source: CMS Medicare Physician & Other Practitioners file.