NPI age
19 years
Enumerated 2006-09-16
● Active
Type 1 · Individual
Dimitrios P. Kontoyiannis, M.D.
Kontoyiannis is 1 of 198 internal medicine providers in Houston and 1 of 920 in Texas.
Primary specialty
Internal Medicine
Licensed in
TX
1 state
Status
Active
No deactivations on record
Last NPPES update
2021-06-22
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 920 active internal medicine providers in Texas.
NPI age
19 years
↑ 2 yr above median (17 yr)
State licenses
1 state
16% of peers hold multiple states
Subspecialties
0
35% of peers hold subspecialties
NPI lifetime · 2006 → 2026
2006-09Enumerated in NPPES
2006
2026
Where they practice
Practice location
1515 Holcombe Blvd
Houston, TX 770304000
Mailing address
Po Box 4439
Houston, TX 772104439
Specialties
-
Internal Medicine PrimaryAn internist who deals with infectious diseases of all types and in all organ systems. Conditions requiring selective use of antibiotics call for this special skill. This physician often diagnoses and treats AIDS patients and patients...
Identifiers
| Type | Value | Notes |
|---|---|---|
| 05 (TX) | 38700301 | |
| 01 (TX) | 110171064 | RR MEDICARE |
| 01 (TX) | 82158S | BCBS |
| 01 (TX) | 038700302 | MEDICAID-CSHCN |
Practice context
Part of a multi-provider practice. 3675 other active providers share this practice address in NPPES.
Provyx · Custom healthcare lists
Need all 920 Internal Medicine providers in Texas?
Get the full list as a CSV with verified work emails, direct phones, and LinkedIn URLs.
Request a quote →How to verify this provider
- 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.