NPI age
12 years
Enumerated 2014-03-25
● Active
Type 1 · Individual
DR. Michael Nessim Youssef, MD
Youssef is 1 of 373 psychiatry & neurology providers in Houston and 1 of 1903 in Texas.
Primary specialty
Psychiatry & Neurology
Plus 1 subspecialty
Licensed in
TX
1 state
Status
Active
No deactivations on record
Last NPPES update
2026-03-27
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 1903 active psychiatry & neurology providers in Texas.
NPI age
12 years
↓ 5 yr below median (17 yr)
State licenses
1 state
14% of peers hold multiple states
Subspecialties
1
In the 34% of peers with subspecialties
NPI lifetime · 2014 → 2026
2014-03Enumerated in NPPES
2014
2026
Where they practice
Practice location
6445 Main St
Houston, TX 770301502
Mailing address
6445 Main St
Houston, TX 770301502
Additional practice locations
1 secondary location on file with NPPES.
Location 2
6202 Harry Hines Blvd
Dallas, TX 753907320
Specialties
-
Psychiatry & Neurology PrimaryA Neurologist specializes in the diagnosis and treatment of diseases or impaired function of the brain, spinal cord, peripheral nerves, muscles, autonomic nervous system, and blood vessels that relate to these structures.
-
Internal MedicineAn internist who specializes in the diagnosis and treatment of all types of cancer and other benign and malignant tumors. This specialist decides on and administers therapy for these malignancies as well as consults with surgeons and...
Identifiers
| Type | Value | Notes |
|---|---|---|
| 05 (TX) | 401965501 | |
| 01 (TX) | 401965502 | MEDICAID-CSHCN |
Practice context
Part of a multi-provider practice. 26 other active providers share this practice address in NPPES.
Recently enumerated nearby: 3 new psychiatry & neurology providers have been added in Houston in the last 180 days.
See all →
Provyx · Custom healthcare lists
Need all 1903 Psychiatry & Neurology 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.