NPI age
18 years
Enumerated 2007-06-13
● Active
Type 1 · Individual
DR. Marilyn Hamilton, EDD
Hamilton is 1 of 5 psychologist providers in Houston and 1 of 17 in Texas.
Primary specialty
Psychologist
Licensed in
TX
1 state
Status
Active
No deactivations on record
Last NPPES update
2007-07-08
Source: monthly bulk 2026-05
Sole proprietor
Yes
Solo practice on file
How this provider compares
Across 17 active psychologist providers in Texas.
NPI age
18 years
↑ 6 yr above median (12 yr)
State licenses
1 state
0% of peers hold multiple states
Subspecialties
0
52% of peers hold subspecialties
NPI lifetime · 2007 → 2026
2007-06Enumerated in NPPES
2007
2026
Where they practice
Practice location
4450 S Wayside Dr, Suite 100b
Houston, TX 770871126
Mailing address
5123 Kingsbury St
Houston, TX 770213624
Specialties
-
Psychologist PrimaryA psychologist with a proficiency that involves the application of psychological treatment of addiction stemming from the use of alcohol and other psychoactive substances (e.g., nicotine, marijuana, cocaine, heroin) or behavioral...
Practice context
Part of a multi-provider practice. 1 other active provider shares this practice address in NPPES.
Provyx · Custom healthcare lists
Need all 17 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.