Dr. Roy G. O'Neil, DO
- Medicare services, 2024
- 940
- Medicare patients, 2024
- 220
- Part D claims, 2024
- 865
- MIPS score, 2024
- 22
- Industry payments
- $9,566
- Practice address
- 2525 W Greenway Rd, Phoenix, AZ 85023
- Practice phone
- Call (480) 716-9991
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Greenwaysurgery Center LLC
Phoenix, Arizona
Find Dr. O'Neil'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. Roy G. O'Neil is an anesthesiologist in Phoenix, Arizona
Dr. O'Neil practices at Greenwaysurgery Center LLC in Phoenix, Arizona.
Dr. O'Neil's NPI, 1275911968, was assigned on May 13, 2015. Dr. O'Neil holds Arizona license 1275911968.
- NPI
- 1275911968NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3779885165
- NPI enumeration date
- May 13, 2015
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (480) 716-9991
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 37
- Medical school graduation
- 2015
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Roy G. O'Neil practices at Greenwaysurgery Center LLC in Phoenix, Arizona
Dr. O'Neil's primary practice is Greenwaysurgery Center LLC, at 2525 W Greenway Rd, Phoenix, AZ 85023 in Maricopa County. The practice phone is (480) 716-9991.
- Greenwaysurgery Center LLC2525 W Greenway Rd, Phoenix, AZ 85023 · Maricopa CountyPhone(480) 716-9991
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Roy G. O'Neil is affiliated with 3 sites of care and 2 medical groups
Dr. O'Neil's primary practice is Greenwaysurgery Center LLC in Phoenix, Arizona. The medical group on file is Advanced Spine and Pain. Dmand AI also links Dr. O'Neil to 2 more group practices and clinics and 1 medical group, 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. Roy G. O'Neil's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. O'Neil practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Greenwaysurgery Center LLC | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Roy G. O'Neil is one of 1,244 anesthesiologists in Arizona
Anesthesiology is Dr. O'Neil's primary specialty in the NPI Registry, under taxonomy code 207L00000X. Dr. O'Neil is licensed in Arizona.
Specialties and state licenses
- Anesthesiology, ArizonaPrimary
Anesthesiologists near Dr. O'Neil
Counts of anesthesiologists 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. Roy G. O'Neil billed Medicare for 940 services in 2024
CMS data shows 940 Medicare services from Dr. O'Neil across 21 procedure codes in 2024, for 220 Medicare patients. Medicare paid $126,788 for them. Every service was in an office.
Dr. O'Neil's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Surgery
- 2023: 6632024: 57413%
- Office and hospital visits
- 2023: 2902024: 23519%
- Imaging
- 2023: 932024: 996%
- Tests and treatments
- 2023: 02024: 21
- Lab and pathology
- 2023: 02024: 11
Dr. O'Neil compared with the Arizona median for anesthesiologists, 2024
- Dr. O'Neil
- Arizona median
- Medicare services
- 940vs 7213.1 times
- Medicare patients
- 220vs 13365% above
- Part D claims
- 770vs 2235.0 times
Medians across 1,218 anesthesiologists in Arizona with Dmand AI profiles that report each measure.
Dr. O'Neil'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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Roy G. O'Neil treated 220 Medicare patients in 2024, average age 73
CMS counts 220 Medicare patients who saw Dr. O'Neil in 2024. The largest group is 65 to 74, with 97 patients. 75% of them have arthritis, and 75% have high blood pressure. 7% are also on Medicaid. Their average risk score is 1.26, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. O'Neil's median patient age at 60, with 61% women.
Dr. O'Neil's Medicare patients by age, 2024
Dr. O'Neil's Medicare patients by sex, 2024
- Women12557%
- Men9543%
Chronic conditions among Dr. O'Neil's Medicare patients, 2024
- Arthritis75%
- High blood pressure75%
- High cholesterol75%
- Anxiety43%
- Diabetes33%
- Chronic kidney disease32%
- Ischemic heart disease30%
- Mood disorders27%
Share of Medicare patients with each condition. A patient can have several.
Dr. O'Neil's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 60
Patient panel by sex, all payers
- Women61%
- Men37%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Roy G. O'Neil wrote 865 Medicare Part D claims in 2024
In 2024, Dr. O'Neil wrote 865 Medicare Part D claims for 256 patients. 97% of them were for generic drugs. CMS names the drug for 770 of them, across 15 drugs with 11 or more claims each, at $13,752 in total drug cost. In 2023, CMS named 762 claims across 16 drugs.
Dr. O'Neil's Part D claims by kind of drug, 2024
- Generic843 claims97%
- Brand-name22 claims3%
Dr. O'Neil'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. O'Neil's Part D claims, 2024
- Opioids54%464 of 865 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: 7622024: 7701%
Drugs named by CMS: 15 in 2024, 16 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. Roy G. O'Neil scored 22 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 22 out of 100 for Dr. O'Neil for performance year 2024, reported individually. Dr. O'Neil accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. O'Neil as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. O'Neil's MIPS scores, performance year 2024
- 22of 100Final score
- 0of 100Quality
- 0of 100Improvement Activities
- 72of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Laminectomy or laminotomy (partial removal of spine bones): 1 to 10 procedures (CMS shows small counts as a range)
Spinal fusion: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Roy G. O'Neil received $9,566 in industry payments from 2018 to 2025
CMS Open Payments shows 162 general payments to Dr. O'Neil from 23 drug and device companies from 2018 to 2025. Food and beverage make up the largest share, 59% of the total. Medtronic, Inc. paid the most, $4,497.
General payments to Dr. O'Neil by program year, 2018 to 2025
General payments to Dr. O'Neil by kind, 2018 to 2025
- Food and beverage$5,60359%
- Travel and lodging$3,25934%
- Consulting fees$7007%
- Education$40%
Companies that paid Dr. O'Neil the most, 2018 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Roy G. O'Neil's profile data
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Roy G. O'Neil
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. Roy G. O'Neil's NPI number?
Dr. Roy G. O'Neil's NPI number is 1275911968. It was assigned on May 13, 2015, and it is active in the NPI Registry.
What kind of doctor is Dr. Roy G. O'Neil?
Dr. Roy G. O'Neil is an anesthesiologist in Phoenix, Arizona. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Dr. Roy G. O'Neil practice?
Dr. O'Neil practices at 2525 W Greenway Rd, Phoenix, AZ 85023. Dr. O'Neil's primary practice is Greenwaysurgery Center LLC in Phoenix, Arizona. Dmand AI also links Dr. O'Neil to 2 group practices and clinics and 1 medical group.
What is Dr. Roy G. O'Neil's office phone number?
The practice phone on file for Dr. O'Neil is (480) 716-9991.
What is Dr. Roy G. O'Neil's medical license number?
Dr. O'Neil holds Arizona license 1275911968.
What medical group is Dr. Roy G. O'Neil part of?
Dr. O'Neil is linked to Advanced Spine and Pain. Dmand AI links Dr. O'Neil to 1 more medical group.
Does Dr. Roy G. O'Neil accept Medicare?
Yes. CMS data shows Dr. O'Neil billed Medicare for 940 services in 2024, and Dr. O'Neil accepts Medicare assignment.
Does Dr. Roy G. O'Neil offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. O'Neil as offering telehealth services.
What is Dr. Roy G. O'Neil's MIPS score?
Dr. O'Neil's MIPS final score for performance year 2024 is 22 out of 100, reported individually.
How many Medicare patients does Dr. Roy G. O'Neil see?
CMS counts 220 Medicare patients who saw Dr. O'Neil in 2024, with an average age of 73.
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What services does Dr. Roy G. O'Neil bill to Medicare?
In 2024, Dr. O'Neil's most billed Medicare services were radiation oncology (77002), office visit, established patient (99214) and office visit, new patient (99204).
What drugs does Dr. Roy G. O'Neil prescribe most?
In 2024 Medicare Part D data, Dr. O'Neil's most prescribed drugs by claims were Hydrocodone-Acetaminophen, Oxycodone-Acetaminophen and Oxycodone HCl.
Has Dr. Roy G. O'Neil received payments from drug or device companies?
CMS Open Payments shows $9,566 in general payments to Dr. O'Neil from 23 companies from 2018 to 2025. The largest total came from Medtronic, Inc.
How long has Dr. Roy G. O'Neil been practicing?
Dr. O'Neil graduated from medical school in 2015, 11 years ago.
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