NPI age
19 years
Enumerated 2006-06-16
● Active
Type 1 · Individual
Thomas L Spain JR., MD
Spain is 1 of 1 preventive medicine providers in Dallas and 1 of 20 in Texas.
Primary specialty
Preventive Medicine
Plus 4 subspecialties
Licensed in
TX
1 state
Status
Active
No deactivations on record
Last NPPES update
2026-01-22
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 20 active preventive medicine providers in Texas.
NPI age
19 years
↑ 8 yr above median (10 yr)
State licenses
1 state
5% of peers hold multiple states
Subspecialties
4
In the 85% of peers with subspecialties
NPI lifetime · 2006 → 2026
2006-06Enumerated in NPPES
2006
2026
Where they practice
Practice location
1935 Medical District Dr
Dallas, TX 752357701
Mailing address
1935 Medical District Dr
Dallas, TX 752357701
Specialties
-
Preventive Medicine PrimaryA physician engaged in the subspecialty practice of Addiction Medicine who specializes in the prevention, evaluation, diagnosis, treatment, and recovery of persons with the disease of addiction.
-
AnesthesiologyAn anesthesiologist who specializes in the diagnosis and treatment of addictions.
-
AnesthesiologyAn anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk...
-
AnesthesiologyAn anesthesiologist who provides a high level of care, either as a primary physician or consultant, for patients experiencing problems with acute, chronic and/or cancer pain in both hospital and ambulatory settings. Patient care needs...
-
Family MedicineA family medicine physician who specializes in the diagnosis and treatment of addictions.
Identifiers
| Type | Value | Notes |
|---|---|---|
| 05 (TX) | 159837704 | |
| 05 (TX) | 159837702 | |
| 05 (TX) | 159837703 |
Practice context
Part of a multi-provider practice. 1154 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.
- Confirm payer enrollment if billing.NPI presence does not guarantee active enrollment with Medicare, Medicaid, or commercial payers.