Doctor profile · Federal record
Dr. John Sierocki, M.D.
Medical Oncology Physician (CMS: Medical Oncology) · Princeton, NJ
- NPI 1487792354
- Accepts Medicare
- 53 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
419 N Harrison St, Suite 101
Princeton, NJ 085403521
(609) 924-9300
fax (609) 430-9481
Credentials & registration
- NPI registered
- February 2007 — 19 yrs on file
- Profile last updated
- May 16, 2008
- Year of graduation
- 1973 — 53 yrs since
- Specialty taxonomy
- 207RX0202X — NUCC code
- State license (1)
- New Jersey #25MA03428100
- Medicaid
- NJ #2441004
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1487792354. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
157,264
Distinct HCPCS
10
Medicare allowed
$1,015,249
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
J0881 |
Injection, darbepoetin alfa, 1 microgram (non-esrd use) | 54,600 | 32 | $3 | |
J1439 |
Injection, ferric carboxymaltose, 1 mg | 35,250 | 29 | $1 | |
J1453 |
Injection, fosaprepitant, 1 mg | 21,300 | 17 | $0 | |
J0897 |
Injection, denosumab, 1 mg | 11,520 | 23 | $23 | |
J9267 |
Injection, paclitaxel, 1 mg | 8,309 | 11 | $0 | |
J1100 |
Injection, dexamethasone sodium phosphate, 1 mg | 5,753 | 68 | $0 | |
36415 |
Insertion of needle into vein for collection of blood sample | 1,985 | 295 | $8 | |
85025 |
Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count | 1,935 | 288 | $8 | |
83615 |
Lactate dehydrogenase (enzyme) level | 1,900 | 265 | $6 | |
80053 |
Blood test, comprehensive group of blood chemicals | 1,892 | 286 | $10 |
In context: peer comparison
Among 1 peers in Princeton Medical Oncology Physician, average services per provider: 3,494. This provider delivers 45× the peer median.Open Payments
Industry payments received
All-time total
$90
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Gilead Sciences, INC. | 1 | $89.95 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
1,186
Patients
350
Total drug cost
$19,451
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Levothyroxine Sodium | Generic | 197 | 60 | $3,428 |
| Pantoprazole Sodium | Generic | 119 | 42 | $2,868 |
| Letrozole | Generic | 104 | 29 | $2,852 |
| Amlodipine Besylate | Generic | 88 | 26 | $844 |
| Losartan Potassium | Generic | 85 | 24 | $1,517 |
| Allopurinol | Generic | 80 | 23 | $1,156 |
| Tramadol Hcl | Generic | 78 | 11 | $353 |
| Omeprazole | Generic | 72 | 20 | $1,177 |
| Atorvastatin Calcium | Generic | 67 | 21 | $692 |
| Spironolactone-Hctz (Spironolact/Hydrochlorothiazid) | Brand | 57 | 17 | $2,170 |
Frequently asked questions
What is Dr. John Sierocki's medical specialty?
Dr. John Sierocki practices Medical Oncology Physician in Princeton, NJ.
Where does Dr. John Sierocki practice?
Dr. John Sierocki practices at 419 N Harrison St, Princeton, NJ 085403521. Office phone: 6099249300.
What is Dr. John Sierocki's NPI?
Dr. John Sierocki's National Provider Identifier (NPI) is 1487792354, issued by NPPES.
Does Dr. John Sierocki accept Medicare assignment?
Yes. Dr. John Sierocki accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. John Sierocki commonly perform?
Top Medicare-reported procedures in 2023: Injection, darbepoetin alfa, 1 microgram (non-esrd use) (HCPCS J0881); Injection, ferric carboxymaltose, 1 mg (HCPCS J1439); Injection, fosaprepitant, 1 mg (HCPCS J1453). Source: CMS Medicare Physician & Other Practitioners file.