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Edit this profileAt a glance
- 101 the City Dr S, Orange, CA 92868
About Michael O'reilly
Michael D. O'Reilly, PA-C is a physician assistant practicing in Orange, CA. Medicare claims data shows Michael provided 308 services to 296 patients. The services billed most often include replacement of knee joint, both sides of knee, replacement of thigh bone and hip joint with prosthesis, and established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more. This provider record is associated with NPI 1669139879.
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
- (714) 456-8888
- Email not available
Practice Locations
101 THE CITY DR S
Orange, CA 92868
Procedures Most Often Billed to Medicare
308 services · 296 patients · 3 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Replacement of knee joint, both sides of knee | Procedure | 27447 |
165 | More than most peers in Physician Assistant |
| Replacement of thigh bone and hip joint with prosthesis | Procedure | 27130 |
118 | More than most peers in Physician Assistant |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
25 | Less often than most peers in Physician Assistant |
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 physician assistants at this location 1
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 2
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 physician assistants in Orange 7
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2021 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Replacement of knee joint, both sides of knee 8
Providers in CA who bill this service to Medicare most often.
Common questions
What kind of doctor is Michael D. O'Reilly?
Michael D. O'Reilly is a physician assistant in Orange, CA. That is the designation recorded for this NPI in the federal registry.
NPI registry
What is Michael D. O'Reilly's address?
Michael D. O'Reilly is listed at 101 the City Dr S, Orange, CA 92868. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Michael D. O'Reilly?
The number on file is (714) 456-8888. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Michael D. O'Reilly?
Michael D. O'Reilly's National Provider Identifier is 1669139879. 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 Michael D. O'Reilly train?
Michael D. O'Reilly attended Other, graduating in 2021. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Michael D. O'Reilly have?
Michael D. O'Reilly has 5 years experience. Calculated from a graduation year of 2021, reported in the CMS National Downloadable File.
CMS public data
What procedures does Michael D. O'Reilly perform?
According to Medicare billing data, Michael D. O'Reilly performs procedures including replacement of knee joint, both sides of knee and replacement of thigh bone and hip joint with prosthesis, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Michael D. O'Reilly's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Michael D. O'Reilly. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.