NPI age
19 years
Enumerated 2006-06-12
● Active
Type 1 · Individual
DR. Billie Joe Marek, MD
Marek is 1 of 8 internal medicine providers in McAllen and 1 of 576 in Texas.
Primary specialty
Internal Medicine
Licensed in
TX
1 state
Status
Active
No deactivations on record
Last NPPES update
2017-08-31
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 576 active internal medicine providers in Texas.
NPI age
19 years
≈ at median (19 yr)
State licenses
1 state
18% of peers hold multiple states
Subspecialties
0
46% of peers hold subspecialties
NPI lifetime · 2006 → 2026
2006-06Enumerated in NPPES
2006
2026
Where they practice
Practice location
1901 S 2nd St
McAllen, TX 785031271
Mailing address
Po Box 911230
Dallas, TX 753911230
Specialties
-
Internal Medicine PrimaryAn internist who specializes in the diagnosis and treatment of all types of cancer and other benign and malignant tumors. This specialist decides on and administers therapy for these malignancies as well as consults with surgeons and...
Identifiers
| Type | Value | Notes |
|---|---|---|
| 05 (TX) | 132633202 | |
| 01 (TX) | 132633204 | CSHCN |
| 05 (TX) | 132633205 | |
| 05 (TX) | 132633201 | |
| 05 (TX) | 132633207 | |
| 01 (TX) | 8R1496 | BLUE CROSS OF TEXAS |
Practice context
Part of a multi-provider practice. 10 other active providers share this practice address in NPPES.
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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.
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