NPI age
19 years
Enumerated 2006-07-11
● Active
Type 1 · Individual
Mary George Hanna Youssef, MD
Youssef is 1 of 7 internal medicine providers in Flower Mound and 1 of 2301 in Texas.
Primary specialty
Internal Medicine
Plus 1 subspecialty
Licensed in
TX, WI
2 states
Status
Active
No deactivations on record
Last NPPES update
2023-07-24
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 2301 active internal medicine providers in Texas.
NPI age
19 years
≈ at median (19 yr)
State licenses
2 states
Top 88% — 11% of peers are multi-state
Subspecialties
0
37% of peers hold subspecialties
NPI lifetime · 2006 → 2026
2006-07Enumerated in NPPES
2006
2026
Where they practice
Practice location
1000 Flower Mound Rd
Flower Mound, TX 750283401
Mailing address
614 S Edmonds Ln Ste 101
Lewisville, TX 750673624
Additional practice locations
1 secondary location on file with NPPES.
Location 2
614 S Edmonds Ln Ste 101
Lewisville, TX 750673624
Specialties
-
Internal Medicine PrimaryAn internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.
Identifiers
| Type | Value | Notes |
|---|---|---|
| 01 (WI) | 1427083203 | NHP |
| 01 (TX) | 110242559 | RAILROAD MEDICARE |
| 01 (TX) | 120722 | SUPERIOR |
| 05 (TX) | 153905802 | |
| 05 (WI) | 35131600 | |
| 01 (TX) | 8B9058 | BLUE CROSS |
Multi-state credentialing: Licensed in 2 states. Useful context for credentialers building cross-state provider networks.
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 →
- 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.