Mark Jeffery Irby, PA-C

Primary specialty

Surgical Physician AssistantTaxonomy code 363AS0400X

License

PA08327 Issued in TX

Practice address

6400 Fannin St
Ste 1700
Houston, TX 77030-1521

Phone

(713) 486-7550

NPI assigned

Apr 25, 2013

Sex

Male

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Enrolled in OR

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: No

Green means eligible to order or refer.

Enrollment records 1

Specialty

Physician Assistant

Education

Baylor College of Medicine, 2012

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Regenerative Orthopedic Center LLCGroup PAC ID 0749640597, 27 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Legacy Meridian Park Medical Center Hospital, Tualatin, OR, CCN 380089
• Providence Willamette Falls Medical Center Hospital, Oregon City, OR, CCN 380038

Merit-based Incentive Payment System (MIPS)

Final score

84.11 of 100Reported as group

Quality

69.15

Promoting interoperability

100

Improvement activities

40

Cost

73.63

Medicare enrollment (NPD)

Enrolled

Credentials

Physician Assistant

State licenses

Practice roles

Locations

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

• Regenerative Orthopedic Center LLC

  • Orthopaedic Surgery Physician
  • Tualatin, OR
  • NPI 1568151561
  Medicare reassignment Care Compare group NPD
• Regenerative Orthopedic Center LLC

  • Durable Medical Equipment & Medical Supplies
  • Oregon City, OR
  • NPI 1124891635
  NPD

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• Legacy Meridian Park Hospital

  • General Acute Care Hospital
  • Tualatin, OR
  • NPI 1184647620
  Care Compare affiliation
• Providence Health & Services - Oregon

  • Clinic/Center
  • Portland, OR
  • NPI 1326272741

  Hospital

  Care Compare affiliation
• Providence Health & Services - Oregon

  • General Acute Care Hospital
  • Oregon City, OR
  • NPI 1912282369
  Care Compare affiliation

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1366848000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1773187200000",
    "number": "1174967780",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "7401 SW WASHO CT STE 100",
            "city": "TUALATIN",
            "state": "OR",
            "postal_code": "970628342"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "6400 FANNIN ST",
            "address_2": "STE 1700",
            "city": "HOUSTON",
            "state": "TX",
            "postal_code": "770301521",
            "telephone_number": "713-486-7550"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "6485 SW Borland Rd Ste A",
            "address_purpose": "LOCATION",
            "city": "Tualatin",
            "state": "OR",
            "postal_code": "970629762",
            "country_code": "US",
            "telephone_number": "503-665-0836",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1508 Division St Ste 105",
            "address_purpose": "LOCATION",
            "city": "Oregon City",
            "state": "OR",
            "postal_code": "970451584",
            "country_code": "US",
            "telephone_number": "503-547-6083",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "7401 SW Washo Ct Ste 100",
            "address_purpose": "LOCATION",
            "city": "Tualatin",
            "state": "OR",
            "postal_code": "970628342",
            "country_code": "US",
            "telephone_number": "503-665-0836",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "IRBY",
        "first_name": "MARK",
        "middle_name": "JEFFERY",
        "credential": "PA-C",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2013-04-25",
        "last_updated": "2026-03-11",
        "certification_date": "2026-03-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363AS0400X",
            "taxonomy_group": "",
            "desc": "Physician Assistant, Surgical",
            "state": "TX",
            "license": "PA08327",
            "primary": true
        },
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": "OR",
            "license": "PA219358",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Hamidreza Iranmanesh, MD
• Ava Irannezhad, OTR
• Sara Elena Iranpour, O.D.
• Caitlin Wynne Irby, CAA
• Candus Irby
• Ratonda Lacrese Irby
• Gretta Lynn Irchirl
• Kayla Irelan, D.O.
• Khea Leanne Ireland
• Iremson Clinic LLC

• Surgical Physician Assistant in Houston, TX
• Providers in Houston, TX by specialty
• Surgical Physician Assistant in Texas

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 11, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.