Doctor profile · Federal record
Dr. Michael Kaczanowski, M.D.
Gastroenterology Physician (CMS: Gastroenterology) · Nashua, NH
- NPI 1639371263
- Accepts Medicare
- 25 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
8 Prospect St, North II
Nashua, NH 030603925
(603) 577-5355
fax (603) 577-5356
Credentials & registration
- NPI registered
- June 2007 — 19 yrs on file
- Profile last updated
- September 18, 2014
- Year of graduation
- 2001 — 25 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- New Hampshire #13968
- Medicaid
- NH #3079568
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1639371263. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,200
Distinct HCPCS
10
Medicare allowed
$143,985
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 252 | 242 | $61 | |
45388 |
Destruction of polyp or growth of large bowel using a flexible endoscope | 205 | 204 | $265 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 199 | 197 | $79 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 127 | 127 | $70 | |
43249 |
Balloon dilation of esophagus, stomach, and/or upper small bowel using a flexible endoscope, less than 3.0 cm | 120 | 117 | $125 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 62 | 57 | $125 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 60 | 45 | $78 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 32 | 32 | $129 | |
45381 |
Injection beneath lining of large bowel using a flexible endoscope | 27 | 26 | $15 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 25 | 25 | $167 |
In context: peer comparison
Among 3 peers in this city , average services per provider: 62. This provider delivers 19× the peer median.Open Payments
Industry payments received
All-time total
$193
Transactions
9
Manufacturers
6
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| GENZYME CORPORATION | 4 | $80.82 | |
| Takeda Pharmaceuticals U.S.A., Inc. | 1 | $29.96 | |
| ABBVIE INC. | 1 | $28.29 | |
| CSL Behring | 1 | $20.00 | |
| CapsoVision, Inc. | 1 | $17.20 | |
| Boston Scientific Corporation | 1 | $16.45 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
103
Patients
34
Total drug cost
$1,597
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Pantoprazole Sodium | Generic | 71 | 34 | $1,097 |
| Famotidine | Generic | 18 | 0 | $284 |
| Omeprazole | Generic | 14 | 0 | $215 |
Frequently asked questions
What is Dr. Michael Kaczanowski's medical specialty?
Dr. Michael Kaczanowski practices Gastroenterology Physician in Nashua, NH.
Where does Dr. Michael Kaczanowski practice?
Dr. Michael Kaczanowski practices at 8 Prospect St, Nashua, NH 030603925. Office phone: 6035775355.
What is Dr. Michael Kaczanowski's NPI?
Dr. Michael Kaczanowski's National Provider Identifier (NPI) is 1639371263, issued by NPPES.
Does Dr. Michael Kaczanowski accept Medicare assignment?
Yes. Dr. Michael Kaczanowski accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Michael Kaczanowski commonly perform?
Top Medicare-reported procedures in 2023: Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (HCPCS 43239); Destruction of polyp or growth of large bowel using a flexible endoscope (HCPCS 45388); Removal of polyps or growths of large bowel using an endoscope with mechanical snare (HCPCS 45385). Source: CMS Medicare Physician & Other Practitioners file.