Diana Hearst Ikeda, PH.D.
Diana Hearst Ikeda, PH.D. is a Cognitive & Behavioral Psychologist in Duxbury, MA, registered under NPI 1124146717. This provider registers 10 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 20 TREMONT ST SUITE 12 A, Duxbury, MA 02332. 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 |
|---|---|---|
| 6917 | MA | Cognitive & Behavioral Psychologist primary |
| 6917 | MA | Addiction (Substance Use Disorder)… |
| 6917 | MA | Mental Health Counselor |
| 6917 | MA | Psychologist |
| 6917 | MA | Addiction (Substance Use Disorder)… |
| 6917 | MA | Adult Development & Aging Psychologist |
| 6917 | MA | Clinical Psychologist |
| 6917 | MA | Counseling Psychologist |
| 6917 | MA | Clinical Child & Adolescent Psychologist |
| 6917 | MA | Family Psychologist |
This provider holds licence 6917 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 Cognitive & Behavioral covers
A psychologist who reflects an experimental-clinical approach distinguished by use of principles of human learning and development and theories of cognitive processing to promote meaningful change in maladaptive human behavior and thinking. NUCC Health Care Provider Taxonomy, code 103TB0200X
All registered taxonomy codes
This provider registers 10 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 103TB0200X | Cognitive & Behavioral Psychologist Cognitive & Behavioral | 6917 | MA | primary |
| 101YA0400X | Addiction (Substance Use Disorder) Counselor Addiction (Substance Use Disorder) | 6917 | MA | |
| 101YM0800X | Mental Health Counselor Mental Health | 6917 | MA | |
| 103T00000X | Psychologist | 6917 | MA | |
| 103TA0400X | Addiction (Substance Use Disorder) Psychologist Addiction (Substance Use Disorder) | 6917 | MA | |
| 103TA0700X | Adult Development & Aging Psychologist Adult Development & Aging | 6917 | MA | |
| 103TC0700X | Clinical Psychologist Clinical | 6917 | MA | |
| 103TC1900X | Counseling Psychologist Counseling | 6917 | MA | |
| 103TC2200X | Clinical Child & Adolescent Psychologist Clinical Child & Adolescent | 6917 | MA | |
| 103TF0000X | Family Psychologist Family | 6917 | 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 | 1124146717 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Mar 26, 2007 |
| Last updated | Dec 13, 2013 |
| Status | Active |
| Sole proprietor | Yes |
| Credential | PH.D. |
| Practice address |
20 TREMONT ST SUITE 12 A Duxbury, MA 02332 (781) 934-6390 Fax (781) 934-9991 |
| Mailing address |
PO BOX 2628 Duxbury, MA 02331 |
| Other identifiers |
W05211
· Medicaid (MA) W05611 · Other (MA) 407109 · Other (MA) |
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 | 1 | 2 | 4 | 1 | 4 | 6 | 7 | 1 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 1 | 4 | 4 | 2 | 4 | 3 | 7 | 2 |
Sum = 53 · next multiple of 10 = 60 · check digit = 7 · actual last digit = 7
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.