Doctor profile · Federal record
Dr. Karin Rettig, MD
Gastroenterology Physician · Saint Paul, MN
- NPI 1366402679
- 20 yrs on file
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
2550 University Ave W, Suite 423 South
Saint Paul, MN 551141052
(612) 870-5557
fax (612) 870-5857 - Mailing address
-
Po Box 14909
Minneapolis, MN 554140909
Credentials & registration
- NPI registered
- March 2006 — 20 yrs on file
- Profile last updated
- March 24, 2008
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- Minnesota #41057
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1366402679. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
204
Distinct HCPCS
8
Medicare allowed
$18,343
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
88305 |
Pathology examination of tissue using a microscope, intermediate complexity | 62 | 39 | $35 | |
36415 |
Insertion of needle into vein for collection of blood sample | 36 | 20 | $6 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 33 | 29 | $125 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 24 | 24 | $237 | |
G0105 |
Colorectal cancer screening; colonoscopy on individual at high risk | 15 | 15 | $172 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 12 | 12 | $130 | |
43235 |
Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 11 | 11 | $94 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 11 | 11 | $88 |
In context: peer comparison
Among 20 peers in Saint Paul Gastroenterology Physician, average services per provider: 172. This provider delivers 1.2× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
110
Patients
0
Total drug cost
$381,240
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Omeprazole | Generic | 27 | 0 | $648 |
| Humira(Cf) Pen (Adalimumab) | Brand | 19 | 0 | $359,069 |
| Azathioprine | Generic | 14 | 0 | $1,194 |
| Balsalazide Disodium | Generic | 13 | 0 | $3,199 |
| Mercaptopurine | Generic | 13 | 0 | $2,025 |
| Budesonide Dr (Budesonide) | Brand | 12 | 0 | $2,006 |
| Mesalamine | Generic | 12 | 0 | $13,099 |
Frequently asked questions
What is Dr. Karin Rettig's medical specialty?
Dr. Karin Rettig practices Gastroenterology Physician in Saint Paul, MN.
Where does Dr. Karin Rettig practice?
Dr. Karin Rettig practices at 2550 University Ave W, Saint Paul, MN 551141052. Office phone: 6128705557.
What is Dr. Karin Rettig's NPI?
Dr. Karin Rettig's National Provider Identifier (NPI) is 1366402679, issued by NPPES.
What procedures does Dr. Karin Rettig commonly perform?
Top Medicare-reported procedures in 2023: Pathology examination of tissue using a microscope, intermediate complexity (HCPCS 88305); Insertion of needle into vein for collection of blood sample (HCPCS 36415); Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.