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Edit this profileAt a glance
- 5875 E Riverside Blvd, Rockford, IL 61114
About Dr. Oyer
Mark A. Oyer, MD practices orthopedic surgery in Rockford, IL. Mark is also listed as specializing in orthopaedic surgery. According to Medicare claims data, Mark cared for 2,458 Medicare patients across 3,693 services. The services billed most often include injection, triamcinolone acetonide, not otherwise specified, 10 mg, x-ray of knee, 1-2 views, and x-ray of hip, 2-3 views. The provider's National Provider Identifier (NPI) is 1679968812.
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
- (815) 398-9491
- Email not available
Practice Locations
5875 E RIVERSIDE BLVD
Rockford, IL 61114
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
3,693 services · 2,458 patients · 20 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Aspiration and/or injection of fluid from large joint | Procedure | 20610 |
239 | More often than most peers in Orthopedic Surgery |
| Replacement of knee joint, both sides of knee | Procedure | 27447 |
130 | More than most peers in Orthopedic Surgery |
| Computer-assisted surgery for muscle and bone procedure | Procedure | 20985 |
93 | More often than most peers in Orthopedic Surgery |
| Replacement of thigh bone and hip joint with prosthesis | Procedure | 27130 |
80 | More than most peers in Orthopedic Surgery |
| Removal of knee cartilage using an endoscope | Procedure | 29881 |
14 | As often as other peers in Orthopedic Surgery |
| X-ray of knee, 1-2 views | Imaging | 73560 |
590 | More than most peers in Orthopedic Surgery |
| X-ray of hip, 2-3 views | Imaging | 73502 |
419 | More than most peers in Orthopedic Surgery |
| X-ray of knee, 4 or more views | Imaging | 73564 |
265 | More often than most peers in Orthopedic Surgery |
| X-ray for bone length assessment | Imaging | 77073 |
133 | More often than most peers in Orthopedic Surgery |
| X-ray of both hips, minimum of 5 views | Imaging | 73523 |
36 | 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 2
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 6
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 — 31 related providers in 4 groups
Other orthopedic surgeons in Rockford 7
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2015 at Other 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 IL who bill this service to Medicare most often.
Common questions
What is Dr. Oyer's specialty?
Dr. Oyer is an orthopedic surgeon in Rockford, IL. That is the designation recorded for this NPI in the federal registry, where it is listed as “Orthopedic Surgery”.
NPI registry
Where can I find Dr. Oyer?
Dr. Oyer is listed at 5875 E Riverside Blvd, Rockford, IL 61114. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Oyer?
The number on file is (815) 398-9491. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Dr. Oyer's NPI number?
Dr. Oyer's National Provider Identifier is 1679968812. 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
What is Dr. Oyer's medical education?
Dr. Oyer attended Other, graduating in 2015. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Oyer been practicing?
Dr. Oyer has 11 years experience. Calculated from a graduation year of 2015, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Oyer known for?
According to Medicare billing data, Dr. Oyer performs procedures including aspiration and/or injection of fluid from large joint, replacement of knee joint, both sides of knee and computer-assisted surgery for muscle and bone procedure; reads or performs imaging such as x-ray of knee, 1-2 views and x-ray of hip, 2-3 views, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Oyer confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Oyer. If this is you, claiming it is free.
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