Gretchen Dittrich
Gretchen Dittrich is a provider specialising in Behavior Analyst in Worcester, MA, registered under NPI 1003358706. This provider registers 2 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
Here is what surrounds this office in Worcester, based on OpenStreetMap data collected Sep 1, 2026. Parking is available about 727 ft away.
Getting here and what is nearby
Restaurant Dunkin' 226 ft ~1 min
Parking 602 ft ~3 min
Parking First Road Parking Garage 739 ft ~3 min
360 Plantation Street
Parking 727 ft ~3 min
Gas station Speedway 0.33 mi ~7 min
Convenience Speedway 0.34 mi ~7 min
Hotel Beechwood Hotel 0.36 mi ~8 min
Gas station Irving 0.37 mi ~8 min
Convenience Irving 0.38 mi ~8 min
310 Belmont Street
Restaurant Dunkin' Donuts 0.38 mi ~8 min
310 Belmont Street, Worcester 01604
Mo-Fr 05:00-20:30; Sa 05:00-19:30; Su 06:00-19:30
Restaurant Buca di Beppo 0.41 mi ~9 min
7 Boston Turnpike
Convenience Family Farms 0.44 mi ~9 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 |
|---|---|---|
| 0005 | MA | Behavior Analyst primary |
| 0005 | MA | Clinical Psychologist |
This provider holds licence 0005 issued in MA. 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 Behavior Analyst covers
A behavior analyst is qualified by at least a master's degree and Behavior Analyst Certification Board certification and/or a state-issued credential (such as a license) to practice behavior analysis independently. Behavior analysts provide the required supervision to assistant behavior analysts and behavior technicians. A behavior analyst delivers services consistent with the dimensions of applied behavior analysis. Common services may include, but are not limited to, conducting behavioral assessments, analyzing data, writing and revising behavior-analytic treatment plans, training others to implement components of treatment plans, and overseeing implementation of treatment plans. NUCC Health Care Provider Taxonomy, code 103K00000X
All registered taxonomy codes
This provider registers 2 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 103K00000X | Behavior Analyst | 0005 | MA | primary |
| 103TC0700X | Clinical Psychologist Clinical | 0005 | MA |
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 | 1003358706 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Nov 11, 2016 |
| Last updated | Nov 11, 2016 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Practice address |
55 LAKE AVE N Worcester, MA 01655 (774) 442-2263 Fax (774) 442-2270 |
| Mailing address |
PO BOX 415348 Boston, MA 02241 |
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 | 3 | 5 | 8 | 7 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 6 | 5 | 7 | 7 | 0 |
Sum = 54 · next multiple of 10 = 60 · check digit = 6 · actual last digit = 6
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.