NPI age
19 years
Enumerated 2006-06-13
● Active
Type 1 · Individual
MacK D Stewart, MD
Stewart is 1 of 92 emergency medicine providers in Tyler and 1 of 6039 in Texas.
Primary specialty
Emergency Medicine
Licensed in
TX
1 state
Status
Active
No deactivations on record
Last NPPES update
2020-03-26
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 6039 active emergency medicine providers in Texas.
NPI age
19 years
↑ 4 yr above median (15 yr)
State licenses
1 state
17% of peers hold multiple states
Subspecialties
0
43% of peers hold subspecialties
NPI lifetime · 2006 → 2026
2006-06Enumerated in NPPES
2006
2026
Where they practice
Practice location
107 Robert E Lee Dr
Tyler, TX 757034602
Mailing address
107 Robert E Lee Dr
Tyler, TX 757034602
Specialties
-
Emergency Medicine PrimaryAn emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department....
Identifiers
| Type | Value | Notes |
|---|---|---|
| 05 (TX) | 137131212 | |
| 01 (TX) | 0077EJ | BCBS |
| 05 (TX) | 137131207 | |
| 05 (TX) | 137131211 | |
| 01 (TX) | TIN PLUS 044 | TRICARE WINNSBORO LOCATION |
| 01 (TX) | TIN PLUS 005 | TRICARE JV LOCATION |
| 01 (TX) | TIN PLUS 015 | TRICARE TYLER LOCATION |
Practice context
Part of a multi-provider practice. 1 other active provider shares 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.
- Confirm payer enrollment if billing.NPI presence does not guarantee active enrollment with Medicare, Medicaid, or commercial payers.