David Dettmann, PH.D.
David Dettmann, PH.D. is a Rehabilitation Psychologist in Knoxville, IA, registered under NPI 1760430672. This provider registers 8 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
The practice address on file is 1515 W PLEASANT ST (116B), Knoxville, IA 50138. 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 |
|---|---|---|
| 00514 | IA | Clinical Neuropsychologist |
| 00514 | IA | Adult Development & Aging Psychologist |
| 00514 | IA | Cognitive & Behavioral Psychologist |
| 00514 | IA | Counseling Psychologist |
| 00514 | IA | Health Service Psychologist |
| 00514 | IA | Psychologist |
| 00514 | IA | Group Psychotherapy Psychologist |
| 00514 | IA | Rehabilitation Psychologist primary |
This provider holds licence 00514 issued in IA. 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 Rehabilitation covers
A psychologist who specializes in the study and application of psychological principles on behalf of persons who have disability due to injury or illness. Rehabilitation psychologists, often within teams, assess and treat cognitive, emotional, and functional difficulties, and help people to overcome barriers to participation in life activities. Rehabilitation psychologists are involved in practice, research, and advocacy, with the broad goal of fostering independence and opportunity for people with disabilities. NUCC Health Care Provider Taxonomy, code 103TR0400X
All registered taxonomy codes
This provider registers 8 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 103G00000X | Clinical Neuropsychologist | 00514 | IA | |
| 103TA0700X | Adult Development & Aging Psychologist Adult Development & Aging | 00514 | IA | |
| 103TB0200X | Cognitive & Behavioral Psychologist Cognitive & Behavioral | 00514 | IA | |
| 103TC1900X | Counseling Psychologist Counseling | 00514 | IA | |
| 103TH0100X | Health Service Psychologist Health Service | 00514 | IA | |
| 103T00000X | Psychologist | 00514 | IA | |
| 103TP2701X | Group Psychotherapy Psychologist Group Psychotherapy | 00514 | IA | |
| 103TR0400X | Rehabilitation Psychologist Rehabilitation | 00514 | IA | primary |
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 | 1760430672 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | May 4, 2006 |
| Last updated | Jul 13, 2026 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Credential | PH.D. |
| Practice address |
1515 W PLEASANT ST (116B) Knoxville, IA 50138 (641) 842-3101 Fax (641) 828-5307 |
| Mailing address |
122 BLUEGILL CT Pella, IA 50219 |
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 | 7 | 6 | 0 | 4 | 3 | 0 | 6 | 7 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 7 | 3 | 0 | 8 | 3 | 0 | 6 | 5 |
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.