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Edit this profileAt a glance
- 419 N Harrison St, Suite 101, Princeton, NJ 08540
About Dr. Sierocki
Based in Princeton, NJ, John S. Sierocki, M.D. is listed in the NPI registry under medical oncology. John graduated from Hahnemann University College of Medicine in 1973. According to Medicare claims data, John cared for 2,612 Medicare patients across 82,921 services. The services billed most often include injection, ferric carboxymaltose, 1 mg, injection, darbepoetin alfa, 1 microgram (non-esrd use), and injection, fosaprepitant, 1 mg. NPI 1487792354 identifies this record in the national registry.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (609) 924-9300
- Email not available
Practice Locations
419 N HARRISON ST SUITE 101
Princeton, NJ 08540
Conditions Commonly Evaluated or Treated
Within Medical Oncology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
- Anemia
- Blood clots
- Breast cancer
- Colon cancer
- Iron-deficiency anemia
- Leukemia
- Lung cancer
- Lymphoma
- Prostate cancer
Abdominal cancer
- Peritoneal Cancer
Blood cancer
- Blood Cancer
Blood disorders
Cancer complications
Chest cancer
- Thymus tumor
Complications
- Abdominal fluid swelling from cancer
- Fluid around lungs from cancer
Digestive cancer
Digestive cancers
Endocrine cancer
- Adrenal Tumors in Children
Endocrine cancers
Eye cancer
General oncology
Genetic risk
- Inherited Cancer Risk
Gynecologic cancer
Gynecologic cancers
Head and neck
Head and neck cancer
- Head and neck cancer
- Oral cavity cancer
- Salivary Gland Cancer
Metastatic cancer
- Cancer Spread to the Lung
Metastatic disease
- Cancer spread to bones
- Cancer that spread to brain
- Cancer that spread to liver
Neurologic cancers
Sarcomas
Skin cancer
Symptom evaluation
- Cancer pain
- Cancer-related fatigue
- Swollen Lymph Nodes
Thoracic cancers
- Mesothelioma
Treatment side effects
- Chemo Rash
- Mouth Sores From Chemo
- Nerve Pain From Chemo
Urologic cancer
- Penile Cancer
Urologic cancers
Procedures & services
Pain & wellness
Most searched procedures
Cancer treatment care
- Immunotherapy Side Effect Management
- Maintenance Cancer Therapy
Complication management
- Cancer Blood Clot Treatment
Consultations
- Cancer survivorship care
- Integrative oncology consultation
- Post-cancer surveillance scan review
- Pre-Surgery Chemotherapy Consultation
- Preventative Chemotherapy Consultation
- Radiopharmaceutical therapy consultation
- Second Opinion For Cancer
- Stem cell transplant consultation
- Tumor Board Case Review
Diagnostic testing
Diagnostics
- Bone Marrow Biopsy
- Cancer Genetic Testing
- Pathology second opinion for cancer
- Tumor Biomarker Testing
Infusions
- Bone Strengthening Infusion
- Iron Infusion
- IV hydration for cancer patients
- Neurologic infusion treatment
Injections
Medication management
- Oral cancer medication monitoring
Patient education
- Chemo Teaching And Education
Port and line care
- Central line placement in child
- Chemo port removal
- PICC line care and removal
Procedures
Specialized treatments
- Bladder instillation therapy
- Heated Chemotherapy Consultation
- Hepatic Artery Pump Chemotherapy Consultation
Specialty treatments
- Bone Strengthening Injections For Cancer
- CAR-T Therapy
- Chemo allergy desensitization
- Clinical Trial Screening
- Hormone Therapy For Cancer
- Spinal chemo injection
Supportive care
- Advance Care Planning For Cancer
- Cancer nutrition counseling
- Cancer pain management
- Cancer Rehabilitation Evaluation
- Cancer weight loss management
- Chemo brain treatment
- Chemo nausea treatment
- Cold cap therapy for hair loss
- Fertility Preservation for Teens Before Cancer Treatment
- Hospice care consultation
- Lymphedema evaluation
- Palliative cancer care
Treatment side effects
- Chemo Rash Treatment
Vascular access
- Chemo port flush and care
- Chemo port placement
- PICC line care and flush
Procedures Most Often Billed to Medicare
82,921 services · 2,612 patients · 25 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Insertion of needle into vein for collection of blood sample | Procedure | 36415 |
1,695 | More often than most peers in Medical Oncology |
| Injection of additional new drug or substance into vein | Treatment | 96375 |
1,048 | More than most peers in Medical Oncology |
| Injection of drug or substance under skin or into muscle | Treatment | 96372 |
739 | More often than most peers in Medical Oncology |
| Administration of chemotherapy into vein, 1 hour or less | Treatment | 96413 |
239 | As often as other peers in Medical Oncology |
| Infusion into a vein for therapy, prevention, or diagnosis, each additional hour | Treatment | 96366 |
170 | More often than most peers in Medical Oncology |
| Injection, ferric carboxymaltose, 1 mg | Drug given | J1439 |
23,250 | As often as other peers in Medical Oncology |
| Injection, darbepoetin alfa, 1 microgram (non-esrd use) | Drug given | J0881 |
19,500 | More often than most peers in Medical Oncology |
| Injection, fosaprepitant, 1 mg | Drug given | J1453 |
12,750 | More often than most peers in Medical Oncology |
| Injection, denosumab, 1 mg | Drug given | J0897 |
6,420 | As often as other peers in Medical Oncology |
| Injection, dexamethasone sodium phosphate, 1 mg | Drug given | J1100 |
4,615 | More than most peers in Medical Oncology |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Related specialists at this location 2
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other oncologists in Princeton 2
Same specialty, same city.
More connections — 23 related providers in 3 groups
Trained at Hahnemann University College of Medicine 7
Other providers in the same specialty who trained at the same institution.
Class of 1973 at Hahnemann University College of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Insertion of needle into vein for collection of blood sample 8
Providers in NJ who bill this service to Medicare most often.
Common questions
What kind of doctor is John S. Sierocki?
John S. Sierocki is an oncologist in Princeton, NJ. That is the designation recorded for this NPI in the federal registry, where it is listed as “Medical Oncology”.
NPI registry
What is John S. Sierocki's address?
John S. Sierocki is listed at 419 N Harrison St Suite 101, Princeton, NJ 08540. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with John S. Sierocki?
The number on file is (609) 924-9300. Contact the office directly to confirm availability and scheduling.
NPI registry
What is John S. Sierocki's NPI number?
John S. Sierocki's National Provider Identifier is 1487792354. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did John S. Sierocki train?
John S. Sierocki attended Hahnemann University College of Medicine, graduating in 1973. This comes from the CMS National Downloadable File.
CMS public data
How long has John S. Sierocki been practicing?
John S. Sierocki has 53 years experience. Calculated from a graduation year of 1973, reported in the CMS National Downloadable File.
CMS public data
What procedures does John S. Sierocki perform?
According to Medicare billing data, John S. Sierocki performs procedures including insertion of needle into vein for collection of blood sample; provides treatments such as injection of additional new drug or substance into vein and injection of drug or substance under skin or into muscle, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has John S. Sierocki confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by John S. Sierocki. If this is you, claiming it is free.
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