Doctor profile · Federal record
Dr. Mark Irby, PA-C
Surgical Physician Assistant (CMS: Physician Assistant) · Physician Assistant · Houston, TX
- NPI 1174967780
- Accepts Medicare
- MIPS 81.3 / 100 · 2023
- 14 yrs in practice
- Licensed in 2 states
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 4 locations .
- Primary practice
-
6400 Fannin St, Ste 1700
Houston, TX 770301521
(713) 486-7550 - Additional location
-
1508 Division St Ste 105
Oregon City, OR 970451584
(503) 547-6083 - Additional location
-
6485 Sw Borland RD Ste A
Tualatin, OR 970629762
(503) 665-0836 - Additional location
-
7401 Sw Washo CT Ste 100
Tualatin, OR 970628342
(503) 665-0836 - Mailing address
-
7401 Sw Washo CT Ste 100
Tualatin, OR 970628342
Show 1 more location
Credentials & registration
- NPI registered
- April 2013 — 13 yrs on file
- Profile last updated
- March 11, 2026
- Year of graduation
- 2012 — 14 yrs since
- Specialty taxonomy
- 363AS0400X — NUCC code
- State licenses (2)
- Texas #PA08327 · Oregon #PA219358
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1174967780. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
125
Distinct HCPCS
5
Medicare allowed
$7,021
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
20610 |
Aspiration and/or injection of fluid from large joint | 34 | 17 | $62 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 30 | 27 | $79 | |
J1030 |
Injection, methylprednisolone acetate, 40 mg | 26 | 12 | $8 | |
73564 |
X-ray of knee, 4 or more views | 19 | 15 | $41 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 16 | 16 | $98 |
In context: peer comparison
Among 33 peers in Houston Surgical Physician Assistant, average services per provider: 48. This provider delivers 2.6× the peer median.Hospital affiliations
Frequently asked questions
What is Dr. Mark Irby's medical specialty?
Dr. Mark Irby practices Surgical Physician Assistant in Houston, TX.
Where does Dr. Mark Irby practice?
Dr. Mark Irby practices at 6400 Fannin St, Houston, TX 770301521. Office phone: 7134867550.
What is Dr. Mark Irby's NPI?
Dr. Mark Irby's National Provider Identifier (NPI) is 1174967780, issued by NPPES.
Does Dr. Mark Irby accept Medicare assignment?
Yes. Dr. Mark Irby accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Mark Irby commonly perform?
Top Medicare-reported procedures in 2023: Aspiration and/or injection of fluid from large joint (HCPCS 20610); Established patient office or other outpatient visit (HCPCS 99213); Injection, methylprednisolone acetate, 40 mg (HCPCS J1030). Source: CMS Medicare Physician & Other Practitioners file.