David Rauenzahn
David Rauenzahn is a Peer Specialist in Portland, OR, registered under NPI 1003761743. 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 Portland, based on OpenStreetMap data collected Oct 28, 2026. Parking is available about 387 ft away. The nearest transit stop is 936 ft away, served by Southeast Division & Cesar Chavez Boulevard. If you arrive early, there is a coffee shop 789 ft away.
Getting here and what is nearby
Transit Southeast Division & 43rd 89 ft ~1 min
Transit Southeast Division & 43rd 107 ft ~1 min
Parking 100 ft ~1 min
Parking 180 ft ~1 min
Coffee Futura Coffee Roasters 317 ft ~2 min
Coffee Marino Adriatic Cafe 324 ft ~2 min
4129 Southeast Division Street, Portland 97202
Parking 387 ft ~2 min
Restaurant Sckavone's Restaurant 465 ft ~2 min
4100 Southeast Division Street, Portland 97202
Th,Fr 11:00-20:00; Sa,Su 09:00-20:00
Coffee Stumptown 789 ft ~3 min
4525 Southeast Division Street, Portland 97206
Mo-Fr 06:30-17:00; Sa-Su 07:00-17:00
Transit Southeast Division & Cesar Chavez Boulevard 936 ft ~4 min
Gas station 76 0.21 mi ~5 min
Convenience 7-Eleven 0.22 mi ~5 min
Restaurant Authentic Thai Cuisine 0.24 mi ~5 min
Hotel Evermore Guesthouse 0.25 mi ~6 min
3860 Southeast Clinton Street
Restaurant Little Big Burger 0.25 mi ~6 min
Convenience Plaid Pantry 0.37 mi ~8 min
Convenience 50th Market 0.46 mi ~10 min
Hotel Bluebird Guesthouse 0.46 mi ~10 min
Grocery New Seasons Market 0.47 mi ~10 min
4034 Southeast Hawthorne Boulevard, Portland 97214
08:00-22:00
Grocery Natural Grocers 0.50 mi ~10 min
3975 Southeast Powell Boulevard, Portland 97202
Mo-Sa 08:30-21:05; Su 09:00-20:05
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
NPPES does not list a state licence number for this record. That is not unusual — organizations and some provider types are not required to file one. Verify current licensure with the relevant state board before care.
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 Peer Specialist covers
Individuals certified to perform peer support services through a training process defined by a government agency, such as the Department of Veterans Affairs or a state mental health department/certification/licensing authority. NUCC Health Care Provider Taxonomy, code 175T00000X
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 | |
|---|---|---|---|---|
| 175T00000X | Peer Specialist | — | — | primary |
| 101YA0400X | Addiction (Substance Use Disorder) Counselor Addiction (Substance Use Disorder) | — | — |
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 | 1003761743 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Feb 27, 2026 |
| Last updated | Feb 27, 2026 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Practice address |
4212 SE DIVISION ST STE 100 Portland, OR 97206 (503) 963-2575 |
| Mailing address |
PO BOX 8459 Portland, OR 97207 |
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 | 7 | 6 | 1 | 7 | 4 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 5 | 6 | 2 | 7 | 8 |
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.