NPI age
16 years
Enumerated 2010-04-01
● Active
Type 1 · Individual
DR. David Christopher Irwin, MD
Irwin is 1 of 104 radiology providers in Houston and 1 of 408 in Texas.
Primary specialty
Radiology
Plus 1 subspecialty
Licensed in
TX
1 state
Status
Active
No deactivations on record
Last NPPES update
2021-06-16
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 408 active radiology providers in Texas.
NPI age
16 years
↑ 2 yr above median (14 yr)
State licenses
1 state
25% of peers hold multiple states
Subspecialties
1
In the 59% of peers with subspecialties
NPI lifetime · 2010 → 2026
2010-04Enumerated in NPPES
2010
2026
Where they practice
Practice location
1515 Holcombe Blvd
Houston, TX 770304000
Mailing address
Po Box 4439
Houston, TX 772104439
Additional practice locations
1 secondary location on file with NPPES.
Location 2
7026 Old Katy Rd, Suite 276
Houston, TX 770242133
Specialties
-
Radiology PrimaryA radiologist who diagnoses and treats diseases by various radiologic imaging modalities. These include fluoroscopy, digital radiography, computed tomography, sonography and magnetic resonance imaging.
-
RadiologyA radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease.
Identifiers
| Type | Value | Notes |
|---|---|---|
| 05 (TX) | 358744602 | |
| 01 (TX) | P02403658 | RR MEDICARE |
| 01 (TX) | 358744603 | CSHCN MEDICAID |
| 01 (TX) | 8LW233 | BCBS |
Practice context
Part of a multi-provider practice. 3675 other active providers share this practice address in NPPES.
Recently enumerated nearby: 1 new radiology provider has been added in Houston in the last 180 days.
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- Confirm the NPI on NPPES.The CMS registry is the system of record. Open NPPES →
- Check the state license is currently active.State licensing boards publish current status; NPPES does not.
- Confirm payer enrollment if billing.NPI presence does not guarantee active enrollment with Medicare, Medicaid, or commercial payers.