Ellen Preen, PSY.D.
Ellen Preen, PSY.D. is a provider specialising in Clinical Neuropsychologist in Avon, CT, registered under NPI 1003049354.
Getting there
Here is what surrounds this office in Avon, based on OpenStreetMap data collected Sep 2, 2026. Parking is available about 0.51 mi away at Connecticut Park and Ride. A pharmacy sits 0.48 mi from the entrance (Stop & Shop Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.29 mi away.
Getting here and what is nearby
Parking 428 ft ~2 min
Parking 440 ft ~2 min
Restaurant Friendly's 0.20 mi ~4 min
Grocery The Fresh Market 0.26 mi ~6 min
Coffee Starbucks 0.29 mi ~6 min
Pharmacy CVS Pharmacy 0.30 mi ~6 min
Gas station Shell 0.37 mi ~8 min
Pharmacy Walgreens 0.43 mi ~9 min
Restaurant Dunkin' 0.46 mi ~10 min
25 Albany Turnpike, West Simsbury 06092
05:00-20:00
Restaurant McDonald's 0.47 mi ~10 min
22 Albany Turnpike, West Simsbury 06092
Mo-Sa 05:00-23:00; Su 05:00-22:00
Pharmacy Stop & Shop Pharmacy 0.48 mi ~10 min
Grocery Stop & Shop 0.49 mi ~10 min
498 Bushy Hill RoadSimsbury Commons, Simsbury 06070
Mo-Sa 07:00-22:00; Su 07:00-21:00
Parking Connecticut Park and Ride 0.51 mi ~11 min
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| 002894 | CT | Clinical Neuropsychologist primary |
This provider holds licence 002894 issued in CT. 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 Clinical Neuropsychologist covers
A 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 to enhancing the understanding of brain-behavior relationships and the application of such knowledge to human problems. NUCC Health Care Provider Taxonomy, code 103G00000X
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 | 1003049354 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Sep 2, 2009 |
| Last updated | Sep 2, 2009 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | PSY.D. |
| Practice address |
40 DALE RD STE 204 Avon, CT 06001 (860) 677-7300 |
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 | 0 | 0 | 3 | 0 | 4 | 9 | 3 | 5 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 0 | 4 | 9 | 3 | 1 |
Sum = 46 · next multiple of 10 = 50 · check digit = 4 · actual last digit = 4
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.