Int J Radiat Oncol Biol Phys
Dr. Ari Katerelos, MD
- Medicare services, 2024
- 3,243
- Medicare patients, 2024
- 250
- Part D claims, 2019
- 13
- Publications
- 2
- MIPS score, 2024
- 79
- Practice address
- 459 Patterson Rd, Honolulu, HI 96819
- Practice phone
- Call (671) 646-6956
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Fhp Health Center
Honolulu, Hawaii
Find Dr. Katerelos' 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. Ari Katerelos is a radiation oncologist in Honolulu, Hawaii
Dr. Katerelos practices at Fhp Health Center in Honolulu, Hawaii.
Dr. Katerelos' NPI, 1861607418, was assigned on May 14, 2007. Dr. Katerelos graduated from David Geffen School of Medicine at UCLA in 2005. Dr. Katerelos holds California license A99003.
- NPI
- 1861607418NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2365636099
- NPI enumeration date
- May 14, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (671) 646-6956
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 47
- Medical school graduation
- 2005
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ari Katerelos practices at Fhp Health Center in Honolulu, Hawaii
Dr. Katerelos' primary practice is Fhp Health Center, at 459 Patterson Rd, Honolulu, HI 96819 in Honolulu County. The practice phone is (671) 646-6956.
- Fhp Health Center459 Patterson Rd, Honolulu, HI 96819 · Honolulu CountyPhone(671) 646-6956
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Ari Katerelos is affiliated with 4 sites of care and 3 medical groups
Dr. Katerelos' primary practice is Fhp Health Center in Honolulu, Hawaii. The medical group on file is City of Hope. Dmand AI also links Dr. Katerelos to 2 more group practices and clinics, 2 medical groups and 1 physician office, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Ari Katerelos' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Katerelos practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Fhp Health Center | Available with a free account |
| +3 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Ari Katerelos is one of 25 radiation oncologists in Hawaii
Radiation oncology is Dr. Katerelos' primary specialty in the NPI Registry, under taxonomy code 2085R0001X. Dr. Katerelos is board certified in radiation oncology by the American Board of Radiology. Dmand AI has Dr. Katerelos' licenses on file in 3 states: California, Guam and Georgia.
Specialties and state licenses
- Radiation oncology, CaliforniaPrimary
- Guam license
- Georgia license
Clinical focus
Dmand AI lists breast cancer radiation, colorectal cancer radiation, lung cancer radiation, pancreatic cancer radiation and prostate cancer radiation among the conditions Dr. Katerelos treats.
Radiation oncologists near Dr. Katerelos
Counts of radiation 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. Ari Katerelos billed Medicare for 3,243 services in 2024
CMS data shows 3,243 Medicare services from Dr. Katerelos across 14 procedure codes in 2024, for 250 Medicare patients. Medicare paid $1,215,649 for them.
Dr. Katerelos' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Imaging
- 2023: 3,6232024: 2,39134%
- Other services
- 2023: 1,0442024: 85218%
Where Dr. Katerelos' Medicare services took place, 2024
- In an office2,81787%
- In a facility42613%
Dr. Katerelos compared with the Hawaii median for radiation oncologists, 2024
- Dr. Katerelos
- Hawaii median
- Medicare services
- 3,243vs 1,1432.8 times
- Medicare patients
- 250vs 13487% above
- Part D claims
- 13vs 3057% below
Medians across 26 radiation oncologists in Hawaii with Dmand AI profiles that report each measure.
Dr. Katerelos' 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.
Need commercial claims for Dr. Katerelos?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Katerelos and other radiation oncologists in Hawaii.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ari Katerelos treated 250 Medicare patients in 2024, average age 73
CMS counts 250 Medicare patients who saw Dr. Katerelos in 2024. The largest group is 65 to 74, with 131 patients. 75% of them have cancer, and 66% have high cholesterol. 10% are also on Medicaid. Their average risk score is 1.75, 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. Katerelos' median patient age at 70, with 47% women.
Dr. Katerelos' Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Katerelos' Medicare patients by sex, 2024
- Women6626%
- Men18474%
Chronic conditions among Dr. Katerelos' Medicare patients, 2024
- Cancer75%
- High cholesterol66%
- High blood pressure63%
- Arthritis34%
- Diabetes29%
- Ischemic heart disease25%
- Chronic kidney disease22%
- Mood disorders18%
Share of Medicare patients with each condition. A patient can have several.
Dr. Katerelos' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women47%
- Men52%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Ari Katerelos wrote 13 Medicare Part D claims in 2019
In 2019, Dr. Katerelos wrote 13 Medicare Part D claims. Every claim was for a generic drug. They cover 1 drug, with $466 in total drug cost. In 2018, CMS named 13 claims across 1 drug.
Dr. Katerelos' most prescribed drugs by claims, 2019
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2018 to 2019
- 2018
- 2019
- Claims for drugs CMS names
- 2018: 132019: 13No change
Drugs named by CMS: 1 in 2019, 1 in 2018.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
Dr. Ari Katerelos scored 79 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 79 out of 100 for Dr. Katerelos for performance year 2024, reported as part of a group. Dr. Katerelos accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Katerelos' MIPS scores, performance year 2024
- 79of 100Final score
- 78.8of 100Quality
- 40of 100Improvement Activities
- 62of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Ari Katerelos has 2 publications on record
Dmand AI links 2 papers to Dr. Katerelos in 2013. Dr. Katerelos' most frequent co-authors are David Alan Bush, MD, Gregory Cheek, MD and Jerry D. Slater, MD.
Dr. Katerelos' most frequent co-authors
- David Alan Bush, MD2 shared papers
- Gregory Cheek, MD2 shared papers
- Jerry D. Slater, MD2 shared papers
Recent publications by Dr. Katerelos
See who Dr. Katerelos researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Katerelos works with, so you can find a warm path to the right radiation oncologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Ari Katerelos received $997 in industry payments from 2017 to 2024
CMS Open Payments shows 25 general payments to Dr. Katerelos from 13 drug and device companies from 2017 to 2024. Consulting fees make up the largest share, 53% of the total. AstraZeneca Pharmaceuticals LP paid the most, $566.
General payments to Dr. Katerelos by program year, 2017 to 2024
General payments to Dr. Katerelos by kind, 2017 to 2024
- Consulting fees$52553%
- Food and beverage$46046%
- Education$121%
Companies that paid Dr. Katerelos the most, 2017 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Ari Katerelos graduated from David Geffen School of Medicine at UCLA
Dr. Katerelos graduated from David Geffen School of Medicine at UCLA in 2005.
- Medical school
- Board certified in radiation oncology
Source: Dmand AI Professional Profile Data
Dr. Ari Katerelos accepts plans from 14 insurance carriers
Dr. Katerelos is in network with 14 carriers, including Elevance, United Healthcare and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.
- Elevance
- United Healthcare
- Blue Cross Blue Shield of Michigan
- HCSC
- Blue Cross Blue Shield of Massachusetts
- Molina
- Regence Health Plans
- Aetna
- +6 more carriersWith a free account
Plan types Dr. Katerelos accepts, by number of carriers
- Medicare8
- PPO8
- HMO7
- EPO3
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Ari Katerelos'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 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network 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. Ari Katerelos
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. Ari Katerelos' NPI number?
Dr. Ari Katerelos' NPI number is 1861607418. It was assigned on May 14, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Ari Katerelos?
Dr. Ari Katerelos is a radiation oncologist in Honolulu, Hawaii. The primary specialty in the NPI Registry is Radiation Oncology Physician (taxonomy code 2085R0001X).
Where does Dr. Ari Katerelos practice?
Dr. Katerelos practices at 459 Patterson Rd, Honolulu, HI 96819. Dr. Katerelos' primary practice is Fhp Health Center in Honolulu, Hawaii. Dmand AI also links Dr. Katerelos to 2 group practices and clinics, 2 medical groups and 1 physician office.
What is Dr. Ari Katerelos' office phone number?
The practice phone on file for Dr. Katerelos is (671) 646-6956.
What is Dr. Ari Katerelos' medical license number?
Dr. Katerelos holds California license A99003, one of the licenses on file in 3 states.
Which states has Dr. Ari Katerelos been licensed in?
Dmand AI has state licenses on file for Dr. Katerelos in California (2007 to 2026), Guam (since 2025) and Georgia (2025 to 2026).
What medical group is Dr. Ari Katerelos part of?
Dr. Katerelos is linked to City of Hope. Dmand AI links Dr. Katerelos to 2 more medical groups.
Does Dr. Ari Katerelos accept Medicare?
Yes. CMS data shows Dr. Katerelos billed Medicare for 3,243 services in 2024, and Dr. Katerelos accepts Medicare assignment.
What is Dr. Ari Katerelos' MIPS score?
Dr. Katerelos' MIPS final score for performance year 2024 is 79 out of 100, reported as part of a group.
How many Medicare patients does Dr. Ari Katerelos see?
CMS counts 250 Medicare patients who saw Dr. Katerelos in 2024, with an average age of 73.
Show 9 more questionsShow fewer questions
Is Dr. Ari Katerelos board certified?
Yes. Dr. Katerelos is board certified in radiation oncology by the American Board of Radiology.
What services does Dr. Ari Katerelos bill to Medicare?
In 2024, Dr. Katerelos' most billed Medicare services were radiation oncology (77014), radiation oncology (77525) and medical supplies or transport (A9579).
Where did Dr. Ari Katerelos go to medical school?
Dr. Katerelos graduated from David Geffen School of Medicine at UCLA in 2005.
What drugs does Dr. Ari Katerelos prescribe most?
In 2019 Medicare Part D data, Dr. Katerelos' most prescribed drugs by claims were Tamsulosin HCl.
Has Dr. Ari Katerelos received payments from drug or device companies?
CMS Open Payments shows $997 in general payments to Dr. Katerelos from 13 companies from 2017 to 2024. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Dr. Ari Katerelos been practicing?
Dr. Katerelos graduated from medical school in 2005, 21 years ago.
Does Dr. Ari Katerelos do research?
Dmand AI links 2 publications to Dr. Katerelos.
Who does Dr. Ari Katerelos publish with?
Dr. Katerelos' most frequent co-authors are David Alan Bush, MD (2 shared papers), Gregory Cheek, MD (2 shared papers) and Jerry D. Slater, MD (2 shared papers).
What insurance does Dr. Ari Katerelos accept?
Dr. Katerelos is in network with 14 carriers, including Elevance, United Healthcare and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.
Selling to radiation oncology practices?
See radiation oncologists in Hawaii by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card