NPI age
19 years
Enumerated 2007-04-17
● Active
Type 1 · Individual
MR. Theodoros Voloyiannis, M.D.
Voloyiannis is 1 of 53 colon & rectal surgery providers in Houston and 1 of 264 in Texas.
Primary specialty
Colon & Rectal Surgery
Licensed in
TX
1 state
Status
Active
No deactivations on record
Last NPPES update
2019-04-15
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 264 active colon & rectal surgery providers in Texas.
NPI age
19 years
≈ at median (18 yr)
State licenses
1 state
14% of peers hold multiple states
Subspecialties
0
43% of peers hold subspecialties
NPI lifetime · 2007 → 2026
2007-04Enumerated in NPPES
2007
2026
Where they practice
Practice location
7400 Fannin St Ste 1295
Houston, TX 770541934
Mailing address
Po Box 911230
Dallas, TX 753911230
Additional practice locations
1 secondary location on file with NPPES.
Location 2
400 W Medical Center Blvd Ste 205
Webster, TX 775984227
Specialties
-
Colon & Rectal Surgery PrimaryA colon and rectal surgeon is trained to diagnose and treat various diseases of the intestinal tract, colon, rectum, anal canal and perianal area by medical and surgical means. This specialist also deals with other organs and tissues...
Identifiers
| Type | Value | Notes |
|---|---|---|
| 05 (TX) | 199815507 | |
| 05 (TX) | 199815508 |
Practice context
Part of a multi-provider practice. 2 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 →
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