Am J Kidney Dis
Dr. William Charles O'Neill IV, MD
- Medicare services, 2024
- 199
- Medicare patients, 2024
- 102
- Part D claims, 2024
- 28
- Publications
- 19
- MIPS score, 2024
- 95
- Practice address
- 1364 Clifton Road, NE, Atlanta, GA 30322
- Practice phone
- Call (404) 686-8500
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. O'Neill'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. William Charles O'Neill IV is a nephrologist in Atlanta, Georgia
Dr. O'Neill practices at Emory University Hospital in Atlanta, Georgia, part of Emory University.
Dr. O'Neill's NPI, 1215049648, was assigned on August 31, 2006. Dr. O'Neill graduated from Tufts University School of Medicine in 1979. Dr. O'Neill holds Georgia license 28056.
- NPI
- 1215049648NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7315184157
- NPI enumeration date
- August 31, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (404) 686-8500
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 73
- Medical school graduation
- 1979
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. William Charles O'Neill IV practices at Emory University Hospital in Atlanta, Georgia
Dr. O'Neill's primary practice is Emory University Hospital, at 1364 Clifton Road, NE, Atlanta, GA 30322 in De Kalb County. The practice phone is (404) 686-8500.
- Emory University Hospital1364 Clifton Road, NE, Atlanta, GA 30322 · De Kalb CountyPhone(404) 686-8500
Source: Dmand AI Affiliation Data
Dr. William Charles O'Neill IV is affiliated with 3 sites of care and 1 medical group
Dr. O'Neill's primary practice is Emory University Hospital in Atlanta, Georgia, part of Emory University. Dr. O'Neill is also affiliated with Emory University Hospital Midtown. The medical group on file is Emory Clinic. Dmand AI also links Dr. O'Neill to 1 more ambulatory surgery center, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. William Charles O'Neill IV's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. O'Neill practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Emory University Hospital | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. William Charles O'Neill IV is one of 381 nephrologists in Georgia
Nephrology is Dr. O'Neill's primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. O'Neill is licensed in Georgia.
Specialties and state licenses
- Nephrology, GeorgiaPrimary
Nephrologists near Dr. O'Neill
Counts of nephrologists 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. William Charles O'Neill IV billed Medicare for 199 services in 2024
CMS data shows 199 Medicare services from Dr. O'Neill across 5 procedure codes in 2024, for 102 Medicare patients. Medicare paid $13,382 for them.
Dr. O'Neill's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 562024: 123120%
- Imaging
- 2023: 322024: 4334%
- Tests and treatments
- 2023: 272024: 3322%
Where Dr. O'Neill's Medicare services took place, 2024
- In an office4322%
- In a facility15678%
Dr. O'Neill compared with the Georgia median for nephrologists, 2024
- Dr. O'Neill
- Georgia median
- Medicare services
- 199vs 1,12482% below
- Medicare patients
- 102vs 31868% below
Medians across 377 nephrologists in Georgia with Dmand AI profiles that report each measure.
Dr. O'Neill'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.
Need commercial claims for Dr. O'Neill?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. O'Neill and other nephrologists in Georgia.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. William Charles O'Neill IV treated 102 Medicare patients in 2024, average age 69
CMS counts 102 Medicare patients who saw Dr. O'Neill in 2024. The largest group is 65 to 74, with 42 patients. 75% of them have chronic kidney disease, and 75% have high blood pressure. 25% are also on Medicaid. Their average risk score is 4.43, 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. O'Neill's median patient age at 71, with 53% women.
Dr. O'Neill's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. O'Neill's Medicare patients by sex, 2024
- Women4544%
- Men5756%
Chronic conditions among Dr. O'Neill's Medicare patients, 2024
- Chronic kidney disease75%
- High blood pressure75%
- High cholesterol75%
- Diabetes49%
- Atrial fibrillation41%
- Heart failure40%
- Arthritis37%
- Ischemic heart disease33%
Share of Medicare patients with each condition. A patient can have several.
Dr. O'Neill's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women53%
- Men45%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. William Charles O'Neill IV wrote 28 Medicare Part D claims in 2024
In 2024, Dr. O'Neill wrote 28 Medicare Part D claims. 96% of them were for generic drugs.
Dr. O'Neill's Part D claims by kind of drug, 2024
- Generic27 claims96%
- Brand-name and other1 claims4%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. William Charles O'Neill IV scored 95 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 95 out of 100 for Dr. O'Neill for performance year 2024, reported through an alternative payment model (APM). Dr. O'Neill accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. O'Neill's MIPS scores, performance year 2024
- 95of 100Final score
- 80.6of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
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
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Dr. William Charles O'Neill IV has 19 publications on record
Dmand AI links 19 papers to Dr. O'Neill, published from 2014 to 2023. 2020 was the busiest year, with 4. The most frequent topics are Vascular Calcification, Ultrasonography and Kidney Failure, Chronic. Dr. O'Neill has published most often in Arterioscler Thromb Vasc Biol. Dr. O'Neill's most frequent co-authors are Arshad Ali, MD, James Lynch Bailey, MD and Frederick Oliver Buckley, MD.
Dr. O'Neill's papers by year, 2014 to 2023
Topics Dr. O'Neill writes about most
- Vascular Calcification
- Ultrasonography
- Kidney Failure, Chronic
- Peripheral Arterial Disease
- Renal Insufficiency, Chronic
- Anticoagulants
- Lower Extremity
- Nephrology
Dr. O'Neill's most frequent co-authors
- Arshad Ali, MD1 shared paper
- James Lynch Bailey, MD1 shared paper
- Frederick Oliver Buckley, MD1 shared paper
Recent publications by Dr. O'Neill
Am J Physiol Renal Physiol
See who Dr. O'Neill researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. O'Neill works with, so you can find a warm path to the right nephrologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. William Charles O'Neill IV received $644 in industry payments from 2016 to 2025
CMS Open Payments shows 9 general payments to Dr. O'Neill from 3 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 52% of the total. Abiomed paid the most, $450.
General payments to Dr. O'Neill by program year, 2016 to 2025
General payments to Dr. O'Neill by kind, 2016 to 2025
- Food and beverage$33352%
- Travel and lodging$31148%
Companies that paid Dr. O'Neill 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. William Charles O'Neill IV graduated from Tufts University School of Medicine
Dr. O'Neill graduated from Tufts University School of Medicine in 1979.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. William Charles O'Neill IV'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand 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 (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 |
| 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. William Charles O'Neill IV
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. William Charles O'Neill IV's NPI number?
Dr. William Charles O'Neill IV's NPI number is 1215049648. It was assigned on August 31, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. William Charles O'Neill IV?
Dr. William Charles O'Neill IV is a nephrologist in Atlanta, Georgia. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).
Where does Dr. William Charles O'Neill IV practice?
Dr. O'Neill practices at 1364 Clifton Road, NE, Atlanta, GA 30322. Dr. O'Neill's primary practice is Emory University Hospital in Atlanta, Georgia, part of Emory University. Dmand AI also links Dr. O'Neill to 1 ambulatory surgery center.
What is Dr. William Charles O'Neill IV's office phone number?
The practice phone on file for Dr. O'Neill is (404) 686-8500.
What is Dr. William Charles O'Neill IV's medical license number?
Dr. O'Neill holds Georgia license 28056.
Which hospitals is Dr. William Charles O'Neill IV affiliated with?
Dr. O'Neill practices at Emory University Hospital in Atlanta, Georgia. Dr. O'Neill is also affiliated with Emory University Hospital Midtown.
What medical group is Dr. William Charles O'Neill IV part of?
Dr. O'Neill is linked to Emory Clinic.
Does Dr. William Charles O'Neill IV accept Medicare?
Yes. CMS data shows Dr. O'Neill billed Medicare for 199 services in 2024, and Dr. O'Neill accepts Medicare assignment.
What is Dr. William Charles O'Neill IV's MIPS score?
Dr. O'Neill's MIPS final score for performance year 2024 is 95 out of 100, reported through an alternative payment model (APM).
How many Medicare patients does Dr. William Charles O'Neill IV see?
CMS counts 102 Medicare patients who saw Dr. O'Neill in 2024, with an average age of 69.
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What services does Dr. William Charles O'Neill IV bill to Medicare?
In 2024, Dr. O'Neill's most billed Medicare services were hospital inpatient care (99232), ultrasound (76770) and dialysis (90935).
Where did Dr. William Charles O'Neill IV go to medical school?
Dr. O'Neill graduated from Tufts University School of Medicine in 1979.
Has Dr. William Charles O'Neill IV received payments from drug or device companies?
CMS Open Payments shows $644 in general payments to Dr. O'Neill from 3 companies from 2016 to 2025. The largest total came from Abiomed.
How long has Dr. William Charles O'Neill IV been practicing?
Dr. O'Neill graduated from medical school in 1979, 47 years ago.
Does Dr. William Charles O'Neill IV do research?
Dmand AI links 19 publications to Dr. O'Neill, published from 2014 to 2023.
Who does Dr. William Charles O'Neill IV publish with?
Dr. O'Neill's most frequent co-authors are Arshad Ali, MD (1 shared paper), James Lynch Bailey, MD (1 shared paper) and Frederick Oliver Buckley, MD (1 shared paper).
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