Are you Mark J. Irby, PA-C? This profile is yours to edit: update your address, phone, photo and services.
Edit this profileWhere to find Mark J. Irby, PA-C
- Houston location main office
6400 Fannin St, Ste 1700, Houston, TX 77030 - Oregon City location
1508 Division St Ste 105, Oregon City, OR 97045 - Tualatin location
7401 SW Washo Ct Ste 100, Tualatin, OR 97062 - Tualatin location
6485 SW Borland Rd Ste A, Tualatin, OR 97062
About Mark Irby
Mark J. Irby, PA-C is a physician assistant based in Houston, TX. Mark is a 2012 graduate of Baylor College of Medicine. Mark is also listed as specializing in physician assistant — surgical. According to Medicare claims data, Mark cared for 92 Medicare patients across 1,221 services. The services billed most often include injection, methylprednisolone acetate, 1 mg, aspiration and/or injection of fluid from large joint, and x-ray of knee, 4 or more views. The provider's National Provider Identifier (NPI) is 1174967780.
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
- (713) 486-7550
- Email not available
Practice Locations
6400 FANNIN ST STE 1700
Houston, TX 77030
1508 Division St Ste 105
Oregon City, OR 97045
7401 SW Washo Ct Ste 100
Tualatin, OR 97062
6485 SW Borland Rd Ste A
Tualatin, OR 97062
Procedures Most Often Billed to Medicare
1,221 services · 92 patients · 5 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Aspiration and/or injection of fluid from large joint | Procedure | 20610 |
34 | Less often than most peers in Physician Assistant |
| X-ray of knee, 4 or more views | Imaging | 73564 |
26 | As often as other peers in Physician Assistant |
| Injection, methylprednisolone acetate, 1 mg | Drug given | J1010 |
1,120 | Less often than most peers in Physician Assistant |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
23 | Less often than most peers in Physician Assistant |
| New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more | Office visit | 99203 |
18 | 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 3
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 physician assistants in Houston 8
Same specialty, same city.
Trained at Baylor College of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 2012 at Baylor College of Medicine 7
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 TX who bill this service to Medicare most often.
Common questions
What kind of doctor is Mark J. Irby?
Mark J. Irby is a physician assistant in Houston, TX. That is the designation recorded for this NPI in the federal registry.
NPI registry
What is Mark J. Irby's address?
Mark J. Irby is listed at 6400 Fannin St Ste 1700, Houston, TX 77030. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Mark J. Irby?
The number on file is (713) 486-7550. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Mark J. Irby's NPI number?
Mark J. Irby's National Provider Identifier is 1174967780. 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 Mark J. Irby train?
Mark J. Irby attended Baylor College of Medicine, graduating in 2012. This comes from the CMS National Downloadable File.
CMS public data
How long has Mark J. Irby been practicing?
Mark J. Irby has 14 years experience. Calculated from a graduation year of 2012, reported in the CMS National Downloadable File.
CMS public data
What procedures does Mark J. Irby perform?
According to Medicare billing data, Mark J. Irby performs procedures including aspiration and/or injection of fluid from large joint; reads or performs imaging such as x-ray of knee, 4 or more views, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Mark J. Irby confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Mark J. Irby. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.