Dr. Ian B. Deroock, MD
- Medicare services, 2024
- 69,435
- Medicare patients, 2024
- 585
- Part D claims, 2024
- 1,642
- Hospital affiliations
- 3
- Industry payments
- $21,365
- Practice address
- 3686 S Rome St, Gilbert, AZ 85297
- Practice phone
- Call (480) 821-2838
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Ironwood Cancer & Research Centers
Gilbert, Arizona
Find Dr. Deroock's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Ian B. Deroock is a hematologist and oncologist in Gilbert, Arizona
Dr. Deroock practices at Ironwood Cancer & Research Centers in Gilbert, Arizona.
Dr. Deroock's NPI, 1114900479, was assigned on November 21, 2005. Dr. Deroock graduated from University of Arizona College of Medicine in 2003. Dr. Deroock holds Arizona license 41596.
- NPI
- 1114900479NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0143223123
- NPI enumeration date
- November 21, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (480) 821-2838
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 49
- Medical school graduation
- 2003
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ian B. Deroock practices at Ironwood Cancer & Research Centers in Gilbert, Arizona
Dr. Deroock's primary practice is Ironwood Cancer & Research Centers, at 3686 S Rome St, Gilbert, AZ 85297 in Maricopa County. The practice phone is (480) 821-2838.
- Ironwood Cancer & Research Centers3686 S Rome St, Gilbert, AZ 85297 · Maricopa CountyPhone(480) 821-2838
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Ian B. Deroock is affiliated with 7 sites of care and 3 medical groups
Dr. Deroock's primary practice is Ironwood Cancer & Research Centers in Gilbert, Arizona. Dr. Deroock is also affiliated with Dignity Health Mercy Gilbert Medical Center. The medical group on file is Ironwood Cancer & Research Centers. Dmand AI also links Dr. Deroock to 2 more hospitals, 3 group practices and clinics and 2 medical groups, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Ian B. Deroock's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Deroock practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Ironwood Cancer & Research Centers | Available with a free account |
| +6 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ian B. Deroock is one of 259 hematologists and oncologists in Arizona
Hematology and oncology is Dr. Deroock's primary specialty in the NPI Registry, under taxonomy code 207RH0003X. Dr. Deroock is licensed in Arizona.
Specialties and state licenses
- Hematology and oncology, ArizonaPrimary
Hematologists and oncologists near Dr. Deroock
Counts of hematologists and oncologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Ian B. Deroock billed Medicare for 69,435 services in 2024
CMS data shows 69,435 Medicare services from Dr. Deroock across 28 procedure codes in 2024, for 585 Medicare patients. Medicare paid $203,360 for them.
Dr. Deroock's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Drugs given in the office
- 2023: 69,7742024: 60,64213%
- Other services
- 2023: 4,5752024: 6,62545%
- Tests and treatments
- 2023: 8242024: 1,11535%
- Office and hospital visits
- 2023: 8432024: 8966%
- Imaging
- 2023: 752024: 157109%
Where Dr. Deroock's Medicare services took place, 2024
- In an office69,327100%
- In a facility1080%
Dr. Deroock compared with the Arizona median for hematologists and oncologists, 2024
- Dr. Deroock
- Arizona median
- Medicare services
- 69,435vs 2,70525.7 times
- Medicare patients
- 585vs 37058% above
- Part D claims
- 1,361vs 4043.4 times
Medians across 249 hematologists and oncologists in Arizona with Dmand AI profiles that report each measure.
Dr. Deroock's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Deroock and other hematologists and oncologists in Arizona.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ian B. Deroock treated 585 Medicare patients in 2024, average age 75
CMS counts 585 Medicare patients who saw Dr. Deroock in 2024. The largest group is 75 to 84, with 263 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 5% are also on Medicaid. Their average risk score is 1.89, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Deroock's median patient age at 69, with 57% women.
Dr. Deroock's Medicare patients by age, 2024
Dr. Deroock's Medicare patients by sex, 2024
- Women31854%
- Men26746%
Chronic conditions among Dr. Deroock's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis53%
- Cancer43%
- Ischemic heart disease40%
- Chronic kidney disease34%
- Diabetes34%
- Atrial fibrillation23%
Share of Medicare patients with each condition. A patient can have several.
Dr. Deroock's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women57%
- Men41%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Ian B. Deroock wrote 1,642 Medicare Part D claims in 2024
In 2024, Dr. Deroock wrote 1,642 Medicare Part D claims for 227 patients. 67% of them were for generic drugs. CMS names the drug for 1,361 of them, across 36 drugs with 11 or more claims each, at $4,181,127 in total drug cost. In 2023, CMS named 1,112 claims across 37 drugs.
Dr. Deroock's Part D claims by kind of drug, 2024
- Generic1,108 claims67%
- Brand-name534 claims33%
Dr. Deroock's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Deroock's Part D claims, 2024
- Opioids6%98 of 1,642 claims
- Antibiotics5%84 of 1,642 claims
- Antipsychotics, patients 65 and over1%12 of 1,642 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1,1122024: 1,36122%
Drugs named by CMS: 36 in 2024, 37 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Ian B. Deroock offers telehealth to Medicare patients
Dr. Deroock accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Deroock as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Ian B. Deroock received $21,365 in industry payments from 2016 to 2025
CMS Open Payments shows 1,163 general payments to Dr. Deroock from 79 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 92% of the total. Novartis Pharmaceuticals Corporation paid the most, $2,519.
General payments to Dr. Deroock by program year, 2016 to 2025
General payments to Dr. Deroock by kind, 2016 to 2025
- Food and beverage$19,71892%
- Device or supply loans$8324%
- Consulting fees$5252%
- Education$2901%
Companies that paid Dr. Deroock the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Ian B. Deroock graduated from University of Arizona College of Medicine
Dr. Deroock graduated from University of Arizona College of Medicine in 2003.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Ian B. Deroock's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Ian B. Deroock
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Ian B. Deroock's NPI number?
Dr. Ian B. Deroock's NPI number is 1114900479. It was assigned on November 21, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Ian B. Deroock?
Dr. Ian B. Deroock is a hematologist and oncologist in Gilbert, Arizona. The primary specialty in the NPI Registry is Hematology & Oncology Physician (taxonomy code 207RH0003X).
Where does Dr. Ian B. Deroock practice?
Dr. Deroock practices at 3686 S Rome St, Gilbert, AZ 85297. Dr. Deroock's primary practice is Ironwood Cancer & Research Centers in Gilbert, Arizona. Dmand AI also links Dr. Deroock to 2 hospitals, 3 group practices and clinics and 2 medical groups.
What is Dr. Ian B. Deroock's office phone number?
The practice phone on file for Dr. Deroock is (480) 821-2838.
What is Dr. Ian B. Deroock's medical license number?
Dr. Deroock holds Arizona license 41596.
Which hospitals is Dr. Ian B. Deroock affiliated with?
Dr. Deroock is affiliated with Dignity Health Mercy Gilbert Medical Center. Dmand AI links Dr. Deroock to 2 more hospitals.
What medical group is Dr. Ian B. Deroock part of?
Dr. Deroock is linked to Ironwood Cancer & Research Centers. Dmand AI links Dr. Deroock to 2 more medical groups.
Does Dr. Ian B. Deroock accept Medicare?
Yes. CMS data shows Dr. Deroock billed Medicare for 69,435 services in 2024, and Dr. Deroock accepts Medicare assignment.
Does Dr. Ian B. Deroock offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Deroock as offering telehealth services.
How many Medicare patients does Dr. Ian B. Deroock see?
CMS counts 585 Medicare patients who saw Dr. Deroock in 2024, with an average age of 75.
Show 5 more questionsShow fewer questions
What services does Dr. Ian B. Deroock bill to Medicare?
In 2024, Dr. Deroock's most billed Medicare services were injected or infused drug (J1439), injected or infused drug (J0881) and injected or infused drug (J1453).
Where did Dr. Ian B. Deroock go to medical school?
Dr. Deroock graduated from University of Arizona College of Medicine in 2003.
What drugs does Dr. Ian B. Deroock prescribe most?
In 2024 Medicare Part D data, Dr. Deroock's most prescribed drugs by claims were Eliquis, Acyclovir and Xarelto.
Has Dr. Ian B. Deroock received payments from drug or device companies?
CMS Open Payments shows $21,365 in general payments to Dr. Deroock from 79 companies from 2016 to 2025. The largest total came from Novartis Pharmaceuticals Corporation.
How long has Dr. Ian B. Deroock been practicing?
Dr. Deroock graduated from medical school in 2003, 23 years ago.
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