Ian Deroock, M.D.
NPI 1114900479 · Hematology & Oncology Physician · Chandler, AZ
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ian Deroock, M.D. is a Hematology & Oncology Physician provider in Chandler, AZ (NPI 1114900479).
Provider details
- NPI number
- 1114900479
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 41596 (AZ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
2,168 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 558 | $87 |
| Infusion Into a Vein for Therapy, Prevention, Or Diagnosis, Additional Sequential Infusion, 1 Hour Or Less96367 | 282 | $27 |
| Administration of Chemotherapy Into Vein, 1 Hour Or Less96413 | 240 | $123 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 161 | $14 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 135 | $122 |
| Injection of Additional New Drug Or Substance Into Vein96375 | 95 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 36 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Apixabanbrand: Eliquis | 158 | 40 |
| Acyclovir | 114 | 31 |
| Rivaroxabanbrand: Xarelto | 99 | 26 |
| Dexamethasone | 91 | 43 |
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim | 72 | 17 |
| Prednisone | 65 | 17 |
| Lenalidomidebrand: Revlimid |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$3,331 across 135 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-11-21
- Last updated
- 2014-06-04
Frequently asked questions
- What is Ian Deroock's NPI number?
- Ian Deroock's National Provider Identifier (NPI) is 1114900479, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ian Deroock's specialty?
- Ian Deroock is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Ian Deroock located?
- Ian Deroock's practice location on file with NPPES is 695 S Dobson Rd, Chandler, AZ 85224-5665.
- What is Ian Deroock's phone number?
- The practice phone number listed in the NPPES registry for Ian Deroock is (480) 821-2838.
- Does Ian Deroock accept Medicare?
- Ian Deroock is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ian Deroock's NPI active?
- Yes — Ian Deroock's NPI (1114900479) is active in the NPPES registry as of the last update on 2014-06-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.