Doctor profile · Federal record
Dr. John Niedzwicki, M.D.
Medical Oncology Physician · Dartmouth, MA
- NPI 1306812367
- 20 yrs on file
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
535 Faunce Corner RD
Dartmouth, MA 027471242
(508) 996-3991 - Additional location
-
535 Faunce Corner Road
North Dartmouth, MA 027473713
(508) 961-0710
Credentials & registration
- NPI registered
- February 2006 — 20 yrs on file
- Profile last updated
- April 24, 2023
- Specialty taxonomy
- 207RX0202X — NUCC code
- State license (1)
- Massachusetts #74834
- Medicaid
- MA #3091112
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1306812367. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
202,113
Distinct HCPCS
10
Medicare allowed
$476,584
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
J1756 |
Injection, iron sucrose, 1 mg | 172,000 | 153 | $0 | |
J0885 |
Injection, epoetin alfa, (for non-esrd use), 1000 units | 10,240 | 21 | $7 | |
Q5106 |
Injection, epoetin alfa-epbx, biosimilar, (retacrit) (for non-esrd use), 1000 units | 8,920 | 26 | $8 | |
Q5103 |
Injection, infliximab-dyyb, biosimilar, (inflectra), 10 mg | 3,120 | 11 | $19 | |
36415 |
Insertion of needle into vein for collection of blood sample | 1,363 | 458 | $8 | |
85025 |
Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count | 1,230 | 398 | $8 | |
96365 |
Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less | 898 | 163 | $66 | |
82728 |
Ferritin (blood protein) level | 833 | 318 | $13 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 550 | 389 | $92 | |
96372 |
Injection of drug or substance under skin or into muscle | 520 | 42 | $15 |
In context: peer comparison
Among 1 peers in this city , average services per provider: 6,737. This provider delivers 30× the peer median.Open Payments
Industry payments received
All-time total
$42
Transactions
2
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| GlaxoSmithKline, LLC. | 2 | $41.81 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
494
Patients
73
Total drug cost
$1,109,067
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Hydroxyurea | Generic | 118 | 24 | $2,427 |
| Tamoxifen Citrate | Generic | 75 | 17 | $3,932 |
| Anastrozole | Generic | 61 | 16 | $1,821 |
| Raloxifene Hcl | Generic | 45 | 16 | $4,424 |
| Imbruvica (Ibrutinib) | Brand | 37 | 0 | $631,141 |
| Letrozole | Generic | 34 | 0 | $771 |
| Anagrelide Hcl | Generic | 22 | 0 | $5,430 |
| Levothyroxine Sodium | Generic | 19 | 0 | $449 |
| Hydrochlorothiazide | Generic | 18 | 0 | $74 |
| Retacrit (Epoetin Alfa-Epbx) | Brand | 15 | 0 | $9,395 |
Frequently asked questions
What is Dr. John Niedzwicki's medical specialty?
Dr. John Niedzwicki practices Medical Oncology Physician in Dartmouth, MA.
Where does Dr. John Niedzwicki practice?
Dr. John Niedzwicki practices at 535 Faunce Corner RD, Dartmouth, MA 027471242. Office phone: 5089963991.
What is Dr. John Niedzwicki's NPI?
Dr. John Niedzwicki's National Provider Identifier (NPI) is 1306812367, issued by NPPES.
What procedures does Dr. John Niedzwicki commonly perform?
Top Medicare-reported procedures in 2023: Injection, iron sucrose, 1 mg (HCPCS J1756); Injection, epoetin alfa, (for non-esrd use), 1000 units (HCPCS J0885); Injection, epoetin alfa-epbx, biosimilar, (retacrit) (for non-esrd use), 1000 units (HCPCS Q5106). Source: CMS Medicare Physician & Other Practitioners file.