NPI age
19 years
Enumerated 2006-06-17
● Active
Type 1 · Individual
DR. Themistocles Dassopoulos, MD
Dassopoulos is 1 of 179 internal medicine providers in Dallas and 1 of 1807 in Texas.
Primary specialty
Internal Medicine
Plus 1 subspecialty
Licensed in
TX, MO
2 states
Status
Active
No deactivations on record
Last NPPES update
2016-09-02
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 1807 active internal medicine providers in Texas.
NPI age
19 years
≈ at median (19 yr)
State licenses
2 states
Top 83% — 17% of peers are multi-state
Subspecialties
0
35% of peers hold subspecialties
NPI lifetime · 2006 → 2026
2006-06Enumerated in NPPES
2006
2026
Where they practice
Practice location
3409 Worth Street, Suite 640
Dallas, TX 75246
Mailing address
3409 Worth Street, Suite 640
Dallas, TX 75246
Specialties
-
Internal Medicine PrimaryAn internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and...
Identifiers
| Type | Value | Notes |
|---|---|---|
| 01 (TX) | 1760488936 | GROUP NPI |
| 05 (TX) | 3445801-01 | |
| 01 (TX) | 7310099 | AETNA MEDICARE |
Multi-state credentialing: Licensed in 2 states. Useful context for credentialers building cross-state provider networks.
Practice context
Part of a multi-provider practice. 9 other active providers share this practice address in NPPES.
Recently enumerated nearby: 2 new internal medicine providers have been added in Dallas in the last 180 days.
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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.