NPI age
17 years
Enumerated 2008-11-05
● Active
Type 1 · Individual
DR. Jonhenry Grizzle, PH.D.
Grizzle is 1 of 65 psychologist providers in Fort Sam Houston and 1 of 3401 in Texas.
Primary specialty
Psychologist
Licensed in
KS
1 state
Status
Active
No deactivations on record
Last NPPES update
2008-11-05
Source: monthly bulk 2026-05
Sole proprietor
Yes
Solo practice on file
How this provider compares
Across 3401 active psychologist providers in Texas.
NPI age
17 years
↑ 2 yr above median (15 yr)
State licenses
1 state
7% of peers hold multiple states
Subspecialties
0
26% of peers hold subspecialties
NPI lifetime · 2008 → 2026
2008-11Enumerated in NPPES
2008
2026
Where they practice
Practice location
3851 Roger Brooke Drive McHe-Qd (creds), Brooke Army Medical Center
Fort Sam Houston, TX 782346200
Mailing address
8207 Eagle Peak
Helotes, TX 780234350
Specialties
-
Psychologist PrimaryA psychologist who provides continuing and comprehensive mental and behavioral health care for individuals and families; consultation to agencies and communities; training, education and supervision; and research-based practice. It is a...
Practice context
Solo or small practice. No other active providers share this practice address in NPPES. This provider is listed as a sole proprietor.
Provyx · Custom healthcare lists
Need all 3401 Psychologist 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.