Physician Profile
Unclaimed ProfileAbout O'BRIEN
Based in Aurora, IL, William J O'Brien, MD is listed in the NPI registry under general surgery. William graduated from University of Wisconsin School of Medicine in 1989. William is also listed as specialising in surgery.
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
Common questions
What does Dr. O'Brien specialise in?
Dr. O'Brien is a general surgeon in Aurora, IL. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “GENERAL SURGERY”.
NPI registry
Where is Dr. O'Brien located?
Dr. O'Brien is listed at 1221 N HIGHLAND AVE, Aurora, IL 60506. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. O'Brien's phone number?
The number on file is (630) 859-8700. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. O'Brien?
Dr. O'Brien's National Provider Identifier is 1831101955. 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'Brien go to medical school?
Dr. O'Brien attended University of Wisconsin School of Medicine, graduating in 1989. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. O'Brien have?
Dr. O'Brien has 37 years experience. Calculated from a graduation year of 1989, reported in the CMS National Downloadable File.
CMS public data
What does Dr. O'Brien do most often?
According to Medicare billing data, Dr. O'Brien performs procedures including intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.6-7.5 cm, intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.5 cm or less and removal of cancer skin growth of body, arms, or legs, 1.1-2.0 cm; reads or performs imaging such as fluoroscopic guidance for insertion or removal of central vein access device; provides treatments such as ultrasound of both sides of head and neck blood flow and ultrasound study of arm or leg veins with compression and maneuvers, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. O'Brien's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. O'Brien. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (630) 859-8700
- Email not available
Practice Locations
1221 N HIGHLAND AVE
Aurora, IL 60506
Procedures Most Often Billed to Medicare
706 services · 688 patients · 15 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.6-7.5 cm | Procedure | 12032 |
34 |
| Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.5 cm or less | Procedure | 12031 |
32 |
| Removal of cancer skin growth of body, arms, or legs, 1.1-2.0 cm | Procedure | 11602 |
26 |
| Removal of cancer skin growth of body, arms, or legs, 2.1-3.0 cm | Procedure | 11603 |
25 |
| Insertion of central venous tube with port (5 years or older) | Procedure | 36561 |
16 |
| Fluoroscopic guidance for insertion or removal of central vein access device | Imaging | 77001 |
16 |
| Ultrasound of both sides of head and neck blood flow | Treatment | 93880 |
201 |
| Ultrasound study of arm or leg veins with compression and maneuvers | Treatment | 93970 |
86 |
| Ultrasound of leg arteries or artery grafts | Treatment | 93925 |
51 |
| Ultrasound study of one arm or leg veins with compression and maneuvers | Treatment | 93971 |
11 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
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Claim this profileRelated providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other general surgeons at this location 1
Same specialty, same street address — most likely the same department or group.
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 general surgeons in Aurora 7
Same specialty, same city.
More connections — 23 related providers in 3 groups
Trained at University of Wisconsin School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1989 at University of Wisconsin School of Medicine 7
Providers who graduated from the same medical school in the same year.
Also performs Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.6-7.5 cm 8
Providers in IL who bill this service to Medicare most often.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.