NPI age
20 years
Enumerated 2005-08-24
● Active
Type 1 · Individual
DR. John W Largen JR., PHD
Largen is 1 of 102 clinical neuropsychologist providers in Houston and 1 of 496 in Texas.
Primary specialty
Clinical Neuropsychologist
Licensed in
TX
1 state
Status
Active
No deactivations on record
Last NPPES update
2007-08-28
Source: monthly bulk 2026-05
Sole proprietor
Yes
Solo practice on file
How this provider compares
Across 496 active clinical neuropsychologist providers in Texas.
NPI age
20 years
↑ 6 yr above median (14 yr)
State licenses
1 state
6% of peers hold multiple states
Subspecialties
0
38% of peers hold subspecialties
NPI lifetime · 2005 → 2026
2005-08Enumerated in NPPES
2005
2026
Where they practice
Practice location
1020 Holcombe Blvd, Ste 1304
Houston, TX 770302210
Mailing address
1020 Holcombe Blvd, Ste 1304
Houston, TX 770302210
Specialties
-
Clinical Neuropsychologist PrimaryA clinical psychologist who applies principles of assessment and intervention based upon the scientific study of human behavior as it relates to normal and abnormal functioning of the central nervous system. The specialty is dedicated...
Identifiers
| Type | Value | Notes |
|---|---|---|
| 01 (TX) | 86691A | BCBS |
| 01 | 5194361 | AETNA PPO PRODUCTS |
Practice context
Part of a multi-provider practice. 11 other active providers share this practice address in NPPES.
Recently enumerated nearby: 3 new clinical neuropsychologist providers have been added in Houston in the last 180 days.
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- Confirm the NPI on NPPES.The CMS registry is the system of record. Open NPPES →
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