Doctor profile · Federal record
Dr. Christopher Zirker, MD, MSC
Internal Medicine Physician (CMS: Internal Medicine) · Student in an Organized Health Care Education/Training Program · Loveland, CO
- NPI 1629565890
- Accepts Medicare
- MIPS 84.8 / 100 · 2023
- 8 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 4 locations .
- Primary practice
-
2500 Rocky Mountain Ave
Loveland, CO 805389004
(970) 624-2500 - Additional location
-
1024 S LeMay Ave
Fort Collins, CO 805243929
(970) 495-7000 - Additional location
-
13001 E 17Th Pl
Aurora, CO 800452570
(303) 724-1792 - Additional location
-
6767 29Th St
Greeley, CO 806345474
(970) 652-2000 - Mailing address
-
2637 Midpoint Dr Ste B
Fort Collins, CO 805254408
Show 1 more location
Credentials & registration
- NPI registered
- April 2018 — 8 yrs on file
- Profile last updated
- June 24, 2021
- Year of graduation
- 2018 — 8 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- Colorado #DR.0066504
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1629565890. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
290
Distinct HCPCS
6
Medicare allowed
$44,703
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 189 | 179 | $174 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 38 | 22 | $120 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 25 | 17 | $80 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 15 | 15 | $131 | |
99238 |
Hospital discharge day management, 30 minutes or less | 12 | 12 | $82 | |
99291 |
Critical care, first 30-74 minutes | 11 | 11 | $213 |
In context: peer comparison
Among 7 peers in Loveland Internal Medicine Physician, average services per provider: 104. This provider delivers 2.8× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
17
Patients
0
Total drug cost
$373
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 17 | 0 | $373 |
Hospital affiliations
Frequently asked questions
What is Dr. Christopher Zirker's medical specialty?
Dr. Christopher Zirker practices Internal Medicine Physician in Loveland, CO.
Where does Dr. Christopher Zirker practice?
Dr. Christopher Zirker practices at 2500 Rocky Mountain Ave, Loveland, CO 805389004. Office phone: 9706242500.
What is Dr. Christopher Zirker's NPI?
Dr. Christopher Zirker's National Provider Identifier (NPI) is 1629565890, issued by NPPES.
Does Dr. Christopher Zirker accept Medicare assignment?
Yes. Dr. Christopher Zirker accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Christopher Zirker commonly perform?
Top Medicare-reported procedures in 2023: Initial hospital care with moderate level of medical decision making (HCPCS 99223); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232). Source: CMS Medicare Physician & Other Practitioners file.