Physician Profile
Unclaimed ProfileAbout O'NEILL
William Charles O'Neill, MD is a healthcare provider in Atlanta, GA specializing in nephrology. William trained at Tufts University School of Medicine, graduating in 1979. According to Medicare claims data, William cared for 129 Medicare patients across 199 services.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (404) 778-4366
- Email not available
Practice Locations
1365 CLIFTON RD NE BLDG B THE EMORY CLINIC - NEPHROLOGY
Atlanta, GA 30322
Procedures Most Often Billed to Medicare
199 services · 129 patients · 5 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Complete ultrasound scan behind abdominal cavity | Imaging | 76770 |
43 |
| Hemodialysis procedure with physician evaluation | Treatment | 90935 |
33 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | Office visit | 99232 |
77 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | Office visit | 99233 |
31 |
| Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | Office visit | 99222 |
15 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Related specialists at this location 1
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other nephrology specialists in Atlanta 8
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at Tufts University School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1979 at Tufts University School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Complete ultrasound scan behind abdominal cavity 8
Providers in GA who bill this service to Medicare most often.
Common questions
What does Dr. O'Neill specialize in?
Dr. O'Neill is a nephrology in Atlanta, GA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “NEPHROLOGY”.
NPI registry
Where is Dr. O'Neill located?
Dr. O'Neill is listed at 1365 CLIFTON RD NE BLDG B THE EMORY CLINIC - NEPHROLOGY, Atlanta, GA 30322. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. O'Neill's phone number?
The number on file is (404) 778-4366. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. O'Neill's NPI number?
Dr. O'Neill's National Provider Identifier is 1215049648. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. O'Neill go to medical school?
Dr. O'Neill attended Tufts University School of Medicine, graduating in 1979. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. O'Neill been practicing?
Dr. O'Neill has 47 years experience. Calculated from a graduation year of 1979, reported in the CMS National Downloadable File.
CMS public data
What does Dr. O'Neill do most often?
According to Medicare billing data, Dr. O'Neill performs imaging including complete ultrasound scan behind abdominal cavity; provides treatments such as hemodialysis procedure with physician evaluation, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. O'Neill confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. O'Neill. If this is you, claiming it is free.
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Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.