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- 15000 N 83Rd Ave Unit 300, Peoria, AZ 85381
About Dr. Roller
John Roller, M.D. practices hematology/oncology in Peoria, AZ. John is a 2016 graduate of University of North Dakota School of Medicine. John is also listed as specializing in internal medicine. Medicare claims data shows John provided 365 services to 171 patients. The services billed most often include established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes, and established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more. The provider's National Provider Identifier (NPI) is 1447607627.
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
- (623) 238-7490
- Email not available
Practice Locations
15000 N 83RD AVE UNIT 300
Peoria, AZ 85381
Conditions Commonly Evaluated or Treated
Within Hematology and 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
Advanced Cancers
- Cancer That Has Spread
Blood & Lymph Disorders
Blood Cancers
Blood Disorders
- Bleeding Disorders
- Blood Clot in Lung
- Blood Clotting Gene Mutation
- Deep vein thrombosis
- Hemochromatosis
- High Platelet Count
- High White Blood Cell Count
- Low Platelets
- Low White Blood Cell Count
- Thick Blood
- Unexplained Bruising
Blood disorders
- Bone Marrow Scarring
- Hemolytic Anemia in Children
- Pre-Myeloma Protein In Blood
- Vitamin B12 deficiency anemia
Bone & Soft Tissue Cancers
Digestive Cancers
Endocrine Cancers
Endocrine tumors
Gastrointestinal cancer
General oncology
Genetic Blood Disorders
- Sickle cell disease
- Thalassemia
Gynecologic cancer
Gynecologic Cancers
Head & Neck Cancers
- Oral cancer
Head and neck cancer
Neurologic Cancers
Oncologic emergencies
Ophthalmologic oncology
Skin cancer
Skin Cancers
Urologic Cancers
Procedures & services
Most searched procedures
Biopsies & Diagnostics
Blood disorder care
- Blood Exchange Transfusion
- Photopheresis
Cancer Therapies
Cancer therapy
- Chemo allergy desensitization
- Oral chemotherapy management
- Radiation oncology consultation
- Spinal chemo injection
Cellular Therapies
- CAR-T Therapy
- Stem Cell Transplant
Consultations
- Cancer Survivorship Care Plan
- Clinical Trial Screening
- Second Opinion For Cancer
Diagnostic testing
- Circulating tumor cell test
Hematology Treatments
- Blood Clot Management
- Plasmapheresis
- PRP Injection
- Therapeutic Blood Draw
Imaging
Infusions
- Clotting Factor Replacement
- Iron Infusion
- IV fluids
- IVIG Infusion
Interventional oncology
- Radiofrequency ablation
- TACE Chemoembolization
Supportive Cancer Care
- Bone Strengthening Injections For Cancer
- Pain Management For Cancer
- Red Blood Cell Booster Shot
- White Blood Cell Booster Injection
Supportive cancer care
- Cancer nutrition counseling
- Chemo brain treatment
- Cold cap therapy for hair loss
- Fertility Preservation for Teens Before Cancer Treatment
- Hyperbaric oxygen for radiation damage
- Lymphedema Drainage Therapy
- Palliative cancer care
Surgical & Vascular Access
- Chemo port placement
- Chemo port removal
- Draining lung fluid
- Paracentesis
- PICC line placement coordination
Testing & Genetics
- Cancer Genetic Testing
- Cancer Tumor Profiling
- Liquid Biopsy
Vascular access care
- Chemo port check
- Chemo Port Flush And Maintenance
- PICC line dressing change
Procedures Most Often Billed to Medicare
365 services · 171 patients · 7 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
168 | As often as other peers in Hematology/Oncology |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | Office visit | 99233 |
58 | Less often than most peers in Hematology/Oncology |
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
52 | As often as other peers in Hematology/Oncology |
| New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more | Office visit | 99205 |
35 | More often than most peers in Hematology/Oncology |
| Telephone medical discussion with physician, 11-20 minutes | Office visit | 99442 |
22 | As often as other peers in Hematology/Oncology |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
16 | Less often than most peers in Hematology/Oncology |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
14 | Less often than most peers in Hematology/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.
Other hematology/oncology specialists at this location 4
Same specialty, same street address — most likely the same department or group.
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.
More connections — 17 related providers in 3 groups
Trained at University of North Dakota School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 2016 at University of North Dakota School of Medicine 8
Providers who graduated from the same medical school in the same year.
Common questions
What kind of doctor is John Roller?
John Roller is a hematology/oncology in Peoria, AZ. That is the designation recorded for this NPI in the federal registry.
NPI registry
What is John Roller's address?
John Roller is listed at 15000 N 83Rd Ave Unit 300, Peoria, AZ 85381. 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 Roller?
The number on file is (623) 238-7490. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for John Roller?
John Roller's National Provider Identifier is 1447607627. 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 Roller train?
John Roller attended University of North Dakota School of Medicine, graduating in 2016. This comes from the CMS National Downloadable File.
CMS public data
How much experience does John Roller have?
John Roller has 10 years experience. Calculated from a graduation year of 2016, reported in the CMS National Downloadable File.
CMS public data
What procedures does John Roller perform?
According to Medicare billing data, John Roller the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is John Roller's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by John Roller. If this is you, claiming it is free.
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