Physician Profile
John Niedzwicki, M.D.
Unclaimed ProfileAbout Dr. Niedzwicki
John Niedzwicki, M.D. is a healthcare provider in Dartmouth, MA specializing in medical oncology. John trained at George Washington University School of Medicine, graduating in 1986. Medicare claims data shows John provided 172,590 services to 1,972 patients. The services billed most often include injection, iron sucrose, 1 mg, injection, epoetin alfa-epbx, biosimilar, (retacrit) (for non-esrd use), 1000 units, and infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
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
- (508) 996-3991
- Email not available
Practice Locations
535 FAUNCE CORNER RD
Dartmouth, MA 02747
535 Faunce Corner Road
North Dartmouth, MA 02747
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
- Low Platelets
- Low White Blood Cell Count
- Multiple Myeloma
- Myelodysplastic Syndrome
- Thick Blood
Cancer complications
- High calcium from cancer
Chest cancer
- Thymus tumor
Complications
- Abdominal fluid swelling from cancer
- Fluid around lungs from cancer
Digestive cancer
- Appendix cancer
- Gallbladder cancer
Digestive cancers
- Anal cancer
- Bile duct cancer
- Esophageal cancer
- Liver cancer
- Pancreatic cancer
- Stomach cancer
Endocrine cancer
- Adrenal Tumors in Children
Endocrine cancers
- Neuroendocrine Tumors
- Thyroid cancer
Eye cancer
- Melanoma of the eye
General oncology
- Cancer of unknown primary
Genetic risk
- Inherited Cancer Risk
Gynecologic cancer
- Vulvar cancer
Gynecologic cancers
- Cervical cancer
- Endometrial cancer
- Ovarian cancer
Head and neck
- Laryngeal cancer
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
- Brain tumor
Sarcomas
- Bone tumors
- Soft-tissue sarcoma
Skin cancer
- Melanoma
- 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
- Bladder cancer
- Kidney cancer
- Testicular cancer
Procedures & services
Most searched procedures
- Blood transfusion
- Chemotherapy
- Immunotherapy
- Targeted therapy
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
- Liquid Biopsy
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
- Red Blood Cell Booster Shot
- White Blood Cell Booster Injection
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
- Draining lung fluid
- Paracentesis
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
172,590 services · 1,972 patients · 22 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Insertion of needle into vein for collection of blood sample | Procedure | 36415 |
421 | As often as other peers in Medical Oncology |
| Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less | Treatment | 96365 |
824 | More than most peers in Medical Oncology |
| Injection of drug or substance under skin or into muscle | Treatment | 96372 |
300 | More often than most peers in Medical Oncology |
| Administration of chemotherapy into vein, each additional hour | Treatment | 96415 |
65 | As often as other peers in Medical Oncology |
| Administration of chemotherapy into vein, 1 hour or less | Treatment | 96413 |
61 | Less often than most peers in Medical Oncology |
| Injection, iron sucrose, 1 mg | Drug given | J1756 |
158,600 | More than most peers in Medical Oncology |
| Infusion, normal saline solution, 250 cc | Drug given | J7050 |
125 | As often as other peers in Medical Oncology |
| Injection, epoetin alfa-epbx, biosimilar, (retacrit) (for non-esrd use), 1000 units | Billing code | Q5106 |
10,220 | More than most peers in Medical Oncology |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
471 | More than most peers in Medical Oncology |
| Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count | Lab test | 85025 |
398 | Less often 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.
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.
Trained at George Washington University School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1986 at George Washington University School of Medicine 8
Providers who graduated from the same medical school in the same year.
More connections — 8 related providers in 1 group
Also performs Insertion of needle into vein for collection of blood sample 8
Providers in MA who bill this service to Medicare most often.
Common questions
What does John Niedzwicki specialize in?
John Niedzwicki is an oncologist in Dartmouth, MA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Medical Oncology”.
NPI registry
Where is John Niedzwicki located?
John Niedzwicki is listed at 535 Faunce Corner Rd, Dartmouth, MA 02747. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is John Niedzwicki's phone number?
The number on file is (508) 996-3991. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for John Niedzwicki?
John Niedzwicki's National Provider Identifier is 1306812367. 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 Niedzwicki train?
John Niedzwicki attended George Washington University School of Medicine, graduating in 1986. This comes from the CMS National Downloadable File.
CMS public data
How much experience does John Niedzwicki have?
John Niedzwicki has 40 years experience. Calculated from a graduation year of 1986, reported in the CMS National Downloadable File.
CMS public data
What does John Niedzwicki do most often?
According to Medicare billing data, John Niedzwicki performs procedures including insertion of needle into vein for collection of blood sample; provides treatments such as infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less 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
Is John Niedzwicki's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by John Niedzwicki. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.