Doctor profile · Federal record
Dr. Garth Swanson, M.D.
Gastroenterology Physician (CMS: Gastroenterology) · Chicago, IL
- NPI 1538335385
- Accepts Medicare
- 25 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1725 W Harrison St, Suite 207
Chicago, IL 606123841
(312) 942-5861
fax (312) 563-3883
Credentials & registration
- NPI registered
- May 2008 — 18 yrs on file
- Year of graduation
- 2001 — 25 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- Illinois #036-111785
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1538335385. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
127
Distinct HCPCS
6
Medicare allowed
$15,020
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 33 | 32 | $133 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 29 | 27 | $98 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 22 | 22 | $163 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 20 | 15 | $77 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 12 | 12 | $132 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 11 | 11 | $96 |
In context: peer comparison
Among 70 peers in Chicago Gastroenterology Physician, average services per provider: 239. This provider delivers 0.5× the peer median.Open Payments
Industry payments received
All-time total
$101
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Olympus America INC. | 1 | $100.50 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
284
Patients
24
Total drug cost
$1,790,819
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Humira(Cf) Pen (Adalimumab) | Brand | 46 | 0 | $539,517 |
| Stelara (Ustekinumab) | Brand | 34 | 0 | $901,706 |
| Omeprazole | Generic | 33 | 12 | $553 |
| Mesalamine | Generic | 30 | 0 | $22,450 |
| Entyvio (Vedolizumab) | Brand | 24 | 0 | $209,233 |
| Pantoprazole Sodium | Generic | 23 | 12 | $426 |
| Sandostatin Lar Depot (Octreotide Acetate,Mi-Spheres) | Brand | 23 | 0 | $111,320 |
| Azathioprine | Generic | 19 | 0 | $1,124 |
| Esomeprazole Magnesium | Generic | 17 | 0 | $1,146 |
| Dicyclomine Hcl | Generic | 13 | 0 | $395 |
Frequently asked questions
What is Dr. Garth Swanson's medical specialty?
Dr. Garth Swanson practices Gastroenterology Physician in Chicago, IL.
Where does Dr. Garth Swanson practice?
Dr. Garth Swanson practices at 1725 W Harrison St, Chicago, IL 606123841. Office phone: 3129425861.
What is Dr. Garth Swanson's NPI?
Dr. Garth Swanson's National Provider Identifier (NPI) is 1538335385, issued by NPPES.
Does Dr. Garth Swanson accept Medicare assignment?
Yes. Dr. Garth Swanson accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Garth Swanson commonly perform?
Top Medicare-reported procedures in 2023: Initial hospital care with straightforward or low-level medical decision making (HCPCS 99222); Established patient office or other outpatient visit (HCPCS 99214); Biopsy of large bowel using a flexible endoscope (HCPCS 45380). Source: CMS Medicare Physician & Other Practitioners file.