NPI age
19 years
Enumerated 2006-08-09
● Active
Type 1 · Individual
Stephen L. Mark, M. D.
Mark is 1 of 34 psychiatry & neurology providers in Waco and 1 of 4391 in Texas.
Primary specialty
Psychiatry & Neurology
Licensed in
TX
1 state
Status
Active
No deactivations on record
Last NPPES update
2007-07-08
Source: monthly bulk 2026-05
Sole proprietor
Yes
Solo practice on file
How this provider compares
Across 4391 active psychiatry & neurology providers in Texas.
NPI age
19 years
↑ 3 yr above median (16 yr)
State licenses
1 state
12% of peers hold multiple states
Subspecialties
0
34% of peers hold subspecialties
NPI lifetime · 2006 → 2026
2006-08Enumerated in NPPES
2006
2026
Where they practice
Practice location
405 Londonderry Dr Ste 202
Waco, TX 767127921
Mailing address
405 Londonderry Dr Ste 202
Waco, TX 767127921
Specialties
-
Psychiatry & Neurology PrimaryA Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders...
Identifiers
| Type | Value | Notes |
|---|---|---|
| 01 (TX) | 00R970 | BLUE CROSS BLUE SHIELD |
Practice context
Solo or small practice. No other active providers share this practice address in NPPES. This provider is listed as a sole proprietor.
Recently enumerated nearby: 1 new psychiatry & neurology provider has been added in Waco in the last 180 days.
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- Confirm the NPI on NPPES.The CMS registry is the system of record. Open NPPES →
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