Physician Profile
Unclaimed ProfileAbout OYER
Mark A Oyer, MD practises orthopedic surgery in Rockford, IL. Mark is also listed as specialising in orthopaedic 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 is Dr. Oyer's specialty?
Dr. Oyer is an orthopedic surgeon in Rockford, IL. This is the primary taxonomy recorded against the NPI in the federal registry, listed there 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. Guide.md cannot book appointments or pass on messages — please call the office directly.
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 practising?
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.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (815) 398-9491
- Email not available
Practice Locations
5875 E RIVERSIDE BLVD
Rockford, IL 61114
Procedures Most Often Billed to Medicare
3,693 services · 2,458 patients · 20 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Aspiration and/or injection of fluid from large joint | Procedure | 20610 |
239 |
| Replacement of knee joint, both sides of knee | Procedure | 27447 |
130 |
| Computer-assisted surgery for muscle and bone procedure | Procedure | 20985 |
93 |
| Replacement of thigh bone and hip joint with prosthesis | Procedure | 27130 |
80 |
| Removal of knee cartilage using an endoscope | Procedure | 29881 |
14 |
| X-ray of knee, 1-2 views | Imaging | 73560 |
590 |
| X-ray of hip, 2-3 views | Imaging | 73502 |
419 |
| X-ray of knee, 4 or more views | Imaging | 73564 |
265 |
| X-ray for bone length assessment | Imaging | 77073 |
133 |
| X-ray of both hips, minimum of 5 views | Imaging | 73523 |
36 |
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.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.