Neil Rocklin, PH.D.
Neil Rocklin, PH.D. is an Adult Development & Aging Psychologist in Woodland Hills, CA, registered under NPI 1609807502. This provider registers 6 separate taxonomy codes, which usually means they practise across more than one recognised specialty. NPPES records them as a sole proprietor, meaning the practice is not incorporated as a separate legal entity.
Getting there
The practice address on file is 21243 VENTURA BLVD SUITE 140, Woodland Hills, CA 91364. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| PSY5027 | CA | Adult Development & Aging Psychologist primary |
| PSY5027 | CA | Cognitive & Behavioral Psychologist |
| PSY5027 | CA | Clinical Child & Adolescent Psychologist |
| PSY5027 | CA | Exercise & Sports Psychologist |
| PSY5027 | CA | Intellectual & Developmental Disabilities… |
| PSY5027 | CA | Preferred Provider Organization |
This provider holds licence PSY5027 issued in CA. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
This NPI does not appear in the PECOS Medicare enrolment file. Providers who do not bill Medicare — or who bill only through a group's enrolment — will not appear here. It is not a sign of any problem with the registration.
What Adult Development & Aging covers
A psychologist who specializes in geropsychology, which applies the knowledge and methods of psychology to understanding and helping older persons and their families to maintain well-being, overcome problems and achieve maximum potential during later life. Professional geropsychology appreciates the wide diversity among older adults, the complex ethical issues that can arise in geriatric practice and the importance of interdisciplinary models of care. NUCC Health Care Provider Taxonomy, code 103TA0700X
All registered taxonomy codes
This provider registers 6 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 103TA0700X | Adult Development & Aging Psychologist Adult Development & Aging | PSY5027 | CA | primary |
| 103TB0200X | Cognitive & Behavioral Psychologist Cognitive & Behavioral | PSY5027 | CA | |
| 103TC2200X | Clinical Child & Adolescent Psychologist Clinical Child & Adolescent | PSY5027 | CA | |
| 103TE1100X | Exercise & Sports Psychologist Exercise & Sports | PSY5027 | CA | |
| 103TM1800X | Intellectual & Developmental Disabilities Psychologist Intellectual & Developmental Disabilities | PSY5027 | CA | |
| 305R00000X | Preferred Provider Organization | PSY5027 | CA |
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1609807502 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jul 6, 2006 |
| Last updated | Sep 11, 2025 |
| Status | Active |
| Sole proprietor | Yes |
| Credential | PH.D. |
| Practice address |
21243 VENTURA BLVD SUITE 140 Woodland Hills, CA 91364 (818) 346-4783 |
| Other identifiers |
PSY5027
· Other (CA) |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 6 | 0 | 9 | 8 | 0 | 7 | 5 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 6 | 0 | 9 | 7 | 0 | 5 | 5 | 0 |
Sum = 58 · next multiple of 10 = 60 · check digit = 2 · actual last digit = 2
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.