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Edit this profileWhere to find Daniel O'Brien, M.D.
- Milwaukee location main office
2900 W Oklahoma Ave, Milwaukee, WI 53215 - Chicago location
1800 W Superior St, 3S, Chicago, IL 60622 - Los Angeles location
200 Ucla Medical Plz Ste 214, Los Angeles, CA 90095 - Oak Lawn location
4400 W 95th St Ste 112, Oak Lawn, IL 60453
About Dr. O'brien
Based in Milwaukee, WI, Daniel O'Brien, M.D. is listed in the NPI registry under general surgery. Daniel graduated from Northwestern University Feinberg Medical School in 2016. Daniel is also listed as specializing in transplant surgery, surgery, and student in an organized health care education program. According to Medicare claims data, Daniel cared for 189 Medicare patients across 375 services. The services billed most often include established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient', and established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more. NPI 1548659980 identifies this record in the national registry.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (414) 649-6000
- Email not available
Practice Locations
2900 W OKLAHOMA AVE
Milwaukee, WI 53215
1800 W Superior St 3S
Chicago, IL 60622
200 Ucla Medical Plz Ste 214
Los Angeles, CA 90095
4400 W 95th St Ste 112
Oak Lawn, IL 60453
Conditions Commonly Evaluated or Treated
Within General Surgery generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
Anorectal
Appendix, bowel, and emergency
Gallbladder and biliary
Hernia and abdominal wall
Skin and soft tissue
Abdominal
Abdominal wall
Breast
Colorectal
Digestive
- Acid reflux
- Acute pancreatitis
- Bleeding Stomach Ulcer
- Bowel Fistula
- Gastroparesis
- Swallowing difficulties
Emergency surgery
Endocrine
Gastrointestinal
Hernia
Infections
Lymphatic
Oncology
Procedures & services
Most searched procedures
Bowel and emergency abdominal
- Colon resection
- Exploratory laparoscopy
- Exploratory laparotomy
- Repair of perforated peptic ulcer
- Small-bowel resection
- Surgery for bowel obstruction
- Surgical drainage of abdominal abscess
- Surgical lysis of adhesions
Gallbladder and appendix
Hernia repair
Skin and soft tissue
Abdominal surgery
Abdominal wall
Access and nutrition
Anorectal
- Anal fistula surgery
- Drainage of anal abscess
- Hemorrhoid removal
- Rubber-band ligation of hemorrhoids
- Surgery for chronic anal fissure
Biopsy
Breast surgery
- Axillary lymph-node dissection
- Excisional biopsy of a breast mass
- Mastectomy
- Sentinel lymph-node biopsy
Breast Surgery
Colorectal
Colorectal surgery
Digestive procedures
Endocrine surgery
Gastrointestinal
Hernia surgery
Skin & Soft Tissue
Surgical Oncology
Surgical procedures
Vascular Access
Wound care
Procedures Most Often Billed to Medicare
375 services · 189 patients · 7 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Transplantation of donor kidney | Procedure | 50360 |
14 | Less often than most peers in General Surgery |
| Insertion of stent in ureter | Procedure | 50605 |
13 | As often as other peers in General Surgery |
| Preparation of donor kidney for transplantation | Procedure | 50323 |
13 | Less often than most peers in General Surgery |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
129 | More than most peers in General Surgery |
| Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient' | Billing code | G2211 |
103 | More often than most peers in General Surgery |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
88 | More often than most peers in General Surgery |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
15 | Less often than most peers in General Surgery |
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.
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 Milwaukee 8
Same specialty, same city.
Trained at Northwestern University Feinberg Medical School 8
Other providers in the same specialty who trained at the same institution.
More connections — 16 related providers in 2 groups
Class of 2016 at Northwestern University Feinberg Medical School 8
Providers who graduated from the same medical school in the same year.
Also performs Transplantation of donor kidney 8
Providers in WI who bill this service to Medicare most often.
Common questions
What does Daniel O'Brien specialize in?
Daniel O'Brien is a general surgeon in Milwaukee, WI. That is the designation recorded for this NPI in the federal registry, where it is listed as “General Surgery”.
NPI registry
Where is Daniel O'Brien located?
Daniel O'Brien is listed at 2900 W Oklahoma Ave, Milwaukee, WI 53215. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Daniel O'Brien's phone number?
The number on file is (414) 649-6000. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Daniel O'Brien's NPI number?
Daniel O'Brien's National Provider Identifier is 1548659980. 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 Daniel O'Brien train?
Daniel O'Brien attended Northwestern University Feinberg Medical School, graduating in 2016. This comes from the CMS National Downloadable File.
CMS public data
How long has Daniel O'Brien been practicing?
Daniel O'Brien has 10 years experience. Calculated from a graduation year of 2016, reported in the CMS National Downloadable File.
CMS public data
What does Daniel O'Brien do most often?
According to Medicare billing data, Daniel O'Brien performs procedures including transplantation of donor kidney, insertion of stent in ureter and preparation of donor kidney for transplantation, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Daniel O'Brien confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Daniel O'Brien. If this is you, claiming it is free.
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