Doctor profile · Federal record
Dr. Matthew Kaspar, MD
Gastroenterology Physician (CMS: Gastroenterology) · Green Bay, WI
- NPI 1275853319
- Accepts Medicare
- 16 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 4 locations .
- Primary practice
-
725 S Webster Ave
Green Bay, WI 543013500
(920) 431-5650
fax (920) 433-7400 - Additional location
-
2820 Roosevelt RD
Marinette, WI 541433834
(715) 735-5225
fax (715) 735-5388 - Additional location
-
820 Arbutus Ave
Oconto, WI 541532004
(920) 835-1100
fax (920) 835-1099 - Additional location
-
1200 E Marshall St
Richmond, VA 232985049
(804) 828-4060
fax (804) 828-5348 - Mailing address
-
Po Box 22487
Green Bay, WI 543052487
Show 1 more location
Credentials & registration
- NPI registered
- June 2010 — 16 yrs on file
- Profile last updated
- August 29, 2022
- Year of graduation
- 2010 — 16 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- Wisconsin #77224-20
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1275853319. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
287
Distinct HCPCS
10
Medicare allowed
$40,779
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 58 | 58 | $232 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 45 | 44 | $68 | |
43235 |
Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 34 | 31 | $102 | |
43248 |
Insertion of guide wire with dilation of esophagus using a flexible endoscope | 27 | 27 | $128 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 27 | 17 | $101 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 24 | 24 | $153 | |
45378 |
Diagnostic exam of large bowel using a flexible endoscope | 19 | 19 | $164 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 18 | 17 | $122 | |
G0121 |
Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk | 13 | 13 | $161 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 11 | 11 | $153 |
In context: peer comparison
Among 7 peers in Green Bay Gastroenterology Physician, average services per provider: 28. This provider delivers 10× the peer median.Open Payments
Industry payments received
All-time total
$287
Transactions
5
Manufacturers
2
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Abbvie INC. | 4 | $268.35 | |
| Genzyme Corporation | 1 | $19.12 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
443
Patients
284
Total drug cost
$25,106
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Peg 3350-Electrolyte (Sodium Chloride/Nahco3/Kcl/Peg) | Brand | 163 | 159 | $3,639 |
| Sutab (Sod Sulf/Pot Chloride/Mag Sulf) | Brand | 79 | 79 | $13,505 |
| Pantoprazole Sodium | Generic | 60 | 20 | $1,578 |
| Sod Sulf-Potass Sulf-Mag Sulf (Sodium, Potassium,Mag Sulfates) | Brand | 26 | 26 | $1,987 |
| Furosemide | Generic | 23 | 0 | $326 |
| Spironolactone | Generic | 22 | 0 | $2,084 |
| Prednisone | Generic | 16 | 0 | $111 |
| Dicyclomine Hcl | Generic | 15 | 0 | $282 |
| Omeprazole | Generic | 15 | 0 | $195 |
| Azathioprine | Generic | 13 | 0 | $133 |
Frequently asked questions
What is Dr. Matthew Kaspar's medical specialty?
Dr. Matthew Kaspar practices Gastroenterology Physician in Green Bay, WI.
Where does Dr. Matthew Kaspar practice?
Dr. Matthew Kaspar practices at 725 S Webster Ave, Green Bay, WI 543013500. Office phone: 9204315650.
What is Dr. Matthew Kaspar's NPI?
Dr. Matthew Kaspar's National Provider Identifier (NPI) is 1275853319, issued by NPPES.
Does Dr. Matthew Kaspar accept Medicare assignment?
Yes. Dr. Matthew Kaspar accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Matthew Kaspar commonly perform?
Top Medicare-reported procedures in 2023: Removal of polyps or growths of large bowel using an endoscope with mechanical snare (HCPCS 45385); Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (HCPCS 43239); Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope (HCPCS 43235). Source: CMS Medicare Physician & Other Practitioners file.