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Edit this profileAt a glance
- 3414 Olandwood CT, Olney, MD 20832
About Dr. O'brien
Denis P. O'Brien, MD is a healthcare provider in Olney, MD specializing in orthopedic surgery. Denis trained at Georgetown University School of Medicine, graduating in 1983. Denis is also listed as specializing in orthopaedic surgery. Medicare claims data shows Denis provided 58,070 services to 3,287 patients. The services billed most often include injection, methylprednisolone acetate, 1 mg, hyaluronan or derivative, hymovis, for intra-articular injection, 1 mg, and hyaluronan or derivative, synojoynt, for intra-articular injection, 1 mg. This provider record is associated with NPI 1427053339.
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
- (301) 774-0500
- Email not available
Practice Locations
3414 OLANDWOOD CT
Olney, MD 20832
Conditions Commonly Evaluated or Treated
Within Orthopedic 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
Elbow, hand, and wrist
Foot and ankle
Hip
Shoulder
Sports and soft tissue
Trauma and bone
Foot & Ankle
Spine
Procedures & services
Most searched procedures
Evaluation and nonsurgical
Arthroscopy
Foot & Ankle
Foot and ankle
Hand & Wrist
Hand and upper extremity
Injections & Non-Surgical
Injections & pain relief
Joint replacement
- Partial knee replacement
- Reverse shoulder replacement
- Revision joint replacement
- Shoulder replacement
Knee
Shoulder surgery
Trauma & Fractures
Trauma and fixation
Procedures Most Often Billed to Medicare
58,070 services · 3,287 patients · 25 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Aspiration and/or injection of fluid from large joint | Procedure | 20610 |
658 | More than most peers in Orthopedic Surgery |
| Aspiration and/or injection of fluid large joint using ultrasound guidance | Procedure | 20611 |
231 | More often than most peers in Orthopedic Surgery |
| Replacement of knee joint, both sides of knee | Procedure | 27447 |
32 | As often as other peers in Orthopedic Surgery |
| Computer-assisted surgery for muscle and bone procedure | Procedure | 20985 |
31 | As often as other peers in Orthopedic Surgery |
| Injection of trigger points, 1-2 muscles | Procedure | 20552 |
30 | As often as other peers in Orthopedic Surgery |
| Injection into tendon or ligament | Procedure | 20550 |
18 | Less often than most peers in Orthopedic Surgery |
| X-ray of knee, 1-2 views | Imaging | 73560 |
430 | More than most peers in Orthopedic Surgery |
| X-ray of shoulder, minimum of 2 views | Imaging | 73030 |
175 | More often than most peers in Orthopedic Surgery |
| X-ray of lower and sacral spine, 2-3 views | Imaging | 72100 |
140 | More than most peers in Orthopedic Surgery |
| X-ray of hip, 2-3 views | Imaging | 73502 |
137 | More often than most peers in Orthopedic 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.
Other orthopedic surgeons at this location 5
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 8
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.
More connections — 27 related providers in 4 groups
Other orthopedic surgeons in Olney 3
Same specialty, same city.
Trained at Georgetown University School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1983 at Georgetown University School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Aspiration and/or injection of fluid from large joint 8
Providers in MD who bill this service to Medicare most often.
Common questions
What does Dr. O'Brien specialize in?
Dr. O'Brien is an orthopedic surgeon in Olney, MD. That is the designation recorded for this NPI in the federal registry, where it is listed as “Orthopedic Surgery”.
NPI registry
Where is Dr. O'Brien located?
Dr. O'Brien is listed at 3414 Olandwood CT, Olney, MD 20832. 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 (301) 774-0500. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Dr. O'Brien?
Dr. O'Brien's National Provider Identifier is 1427053339. 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 Georgetown University School of Medicine, graduating in 1983. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. O'Brien have?
Dr. O'Brien has 43 years experience. Calculated from a graduation year of 1983, 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 aspiration and/or injection of fluid from large joint, aspiration and/or injection of fluid large joint using ultrasound guidance and replacement of knee joint, both sides of knee; reads or performs imaging such as x-ray of knee, 1-2 views and x-ray of shoulder, minimum of 2 views, 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.
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