NPI age
20 years
Enumerated 2006-05-26
● Active
Type 1 · Individual
DR. David Brian Derr, PH.D.
Derr is 1 of 60 psychologist providers in Dallas and 1 of 652 in Texas.
Primary specialty
Psychologist
Plus 1 subspecialty
Licensed in
AR
1 state
Status
Active
No deactivations on record
Last NPPES update
2013-01-14
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 652 active psychologist providers in Texas.
NPI age
20 years
↑ 9 yr above median (11 yr)
State licenses
1 state
2% of peers hold multiple states
Subspecialties
1
In the 19% of peers with subspecialties
NPI lifetime · 2006 → 2026
2006-05Enumerated in NPPES
2006
2026
Where they practice
Practice location
8500 N Stemmons Fwy Ste 5040
Dallas, TX 752473050
Mailing address
8500 N Stemmons Fwy Ste 5040
Dallas, TX 752473050
Specialties
-
Psychologist PrimaryA psychologist who specializes in general practice and health service. It focuses on how people function both personally and in their relationships at all ages. Counseling psychology addresses the emotional, social, work, school and...
-
PsychologistA psychologist is an individual who is licensed to practice psychology which is defined as the observation, description, evaluation, interpretation, and modification of human behavior by the application of psychological principles,...
Identifiers
| Type | Value | Notes |
|---|---|---|
| 01 (AR) | 5Y483 | BLUECROSS PROVIDER NUMBER |
Practice context
Solo or small practice. No other active providers share this practice address in NPPES.
Recently enumerated nearby: 1 new psychologist provider has been added in Dallas in the last 180 days.
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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.