Shawn Giammattei, PH.D
Shawn Giammattei, PH.D is a Family Psychologist in Santa Rosa, CA, registered under NPI 1255580973. This provider registers 7 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 1049 4TH ST SUITE G, Santa Rosa, CA 95404. 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 |
|---|---|---|
| PSY 22570 | CA | Family Psychologist primary |
| PSY 22570 | CA | Clinical Psychologist |
| PSY 22570 | CA | Clinical Child & Adolescent Psychologist |
| PSY 22570 | CA | Cognitive & Behavioral Psychologist |
| PSY 22570 | CA | Adult Development & Aging Psychologist |
| PSY 22570 | CA | Group Psychotherapy Psychologist |
| PSY 22570 | CA | Psychologist |
This provider holds licence PSY 22570 issued in CA. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
- Status
- Approved
- Provider type
- Practitioner - Clinical Psychologist
- PAC ID
- 3274974878
Medicare enrolment is recorded as approved under the provider type Practitioner - Clinical Psychologist. This means the provider is enrolled to bill Medicare, though it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Family covers
A psychologist whose specialty is founded on principles of systems theory with the interpersonal system of the family the focus of assessment, intervention and research. NUCC Health Care Provider Taxonomy, code 103TF0000X
All registered taxonomy codes
This provider registers 7 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 103TF0000X | Family Psychologist Family | PSY 22570 | CA | primary |
| 103TC0700X | Clinical Psychologist Clinical | PSY 22570 | CA | |
| 103TC2200X | Clinical Child & Adolescent Psychologist Clinical Child & Adolescent | PSY 22570 | CA | |
| 103TB0200X | Cognitive & Behavioral Psychologist Cognitive & Behavioral | PSY 22570 | CA | |
| 103TA0700X | Adult Development & Aging Psychologist Adult Development & Aging | PSY 22570 | CA | |
| 103TP2701X | Group Psychotherapy Psychologist Group Psychotherapy | PSY 22570 | CA | |
| 103T00000X | Psychologist | PSY 22570 | 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 | 1255580973 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Sep 17, 2008 |
| Last updated | Nov 21, 2015 |
| Status | Active |
| Sole proprietor | Yes |
| Credential | PH.D |
| Practice address |
1049 4TH ST SUITE G Santa Rosa, CA 95404 (415) 722-7134 |
| Mailing address |
2014 10TH AVE San Francisco, CA 94116 |
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 | 2 | 5 | 5 | 5 | 8 | 0 | 9 | 7 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 2 | 1 | 5 | 1 | 8 | 0 | 9 | 5 |
Sum = 57 · next multiple of 10 = 60 · check digit = 3 · actual last digit = 3
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.