Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Mark Jeffery Irby, PA-C

Individual provider Surgical Physician Assistant · NPI 1174967780

Mark Jeffery Irby, PA-C is a Physician Assistant in Houston, Texas. Graduated from Baylor College of Medicine in 2012, 14 years ago. Practices with Regenerative Orthopedic Center LLC, a 27-clinician group, works from 4 locations and accepts Medicare assignment. Licensed in Oregon and Texas.

Years since qualifying
14
Trained at
Baylor College of Medicine
Licensed in
OR, TX
In the registry since
2013
Specialties on file
2
What do these letters mean?
PA-C — Physician Assistant, Certified
A physician assistant who holds current national certification.

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Practice location Address checks out

6400 Fannin St Ste 1700
Houston, TX 77030-1521
Phone: (713) 486-7550
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (3)

  • 1508 Division St Ste 105, Oregon City, OR 97045-1584 — (503) 547-6083
  • 6485 Sw Borland Rd Ste A, Tualatin, OR 97062-9762 — (503) 665-0836
  • 7401 Sw Washo Ct Ste 100, Tualatin, OR 97062-8342 — (503) 665-0836

Specialties & licences

Surgical Physician Assistant (primary) Taxonomy 363AS0400X · Licence PA08327 (TX)
Physician Assistant Taxonomy 363A00000X · Licence PA219358 (OR)

Record details

NPI number1174967780
Entity typeIndividual (Type 1)
GenderMale
Credentials PA-C
Sole proprietorNo
NPI enumeratedApril 25, 2013
Last updated in NPPESMarch 11, 2026
Certification dateMarch 11, 2026

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyPHYSICIAN ASSISTANT
Medical schoolBAYLOR COLLEGE OF MEDICINE
Graduated 2012 (14 years in practice)
Group practice Regenerative Orthopedic Center Llc — 27 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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