Michelle Zittlau-johnson, RN
Michelle Zittlau-johnson, RN is an Adult Psychiatric/Mental Health Registered Nurse in San Diego, CA, registered under NPI 1003422080. 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 San Diego, based on OpenStreetMap data collected Sep 4, 2026. Parking is available about 625 ft away. There is EV charging 0.47 mi from the office (Tesla Supercharger) — useful if you are driving in from out of town. The nearest transit stop is 0.21 mi away. If you arrive early, there is a coffee shop 0.48 mi away.
Getting here and what is nearby
Transit 136 ft ~1 min
Transit 334 ft ~2 min
Parking 333 ft ~2 min
Grocery Stehly Farms Market 346 ft ~2 min
Parking 586 ft ~3 min
Parking 625 ft ~3 min
Restaurant Nico's Taco Shop 0.20 mi ~4 min
Transit 0.21 mi ~5 min
Gas station Valero 0.22 mi ~5 min
Restaurant JV's Mexican Food 0.28 mi ~6 min
1112 Morena Boulevard
Restaurant Tio Leo's 0.40 mi ~8 min
Convenience 7-Eleven 0.46 mi ~10 min
EV charging Tesla Supercharger 0.47 mi ~10 min
Coffee Sharetea 0.48 mi ~10 min
Coffee Starbucks 0.48 mi ~10 min
5175 Linda Vista Road, Morena Vista Trolley Station 92110
Coffee Babe 0.48 mi ~10 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 |
|---|---|---|
| 95228125 | CA | Adult Psychiatric/Mental Health… primary |
| 95228125 | CA | General Practice Registered Nurse |
This provider holds licence 95228125 issued in CA. 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 Psychiatric/Mental Health, Adult covers
Definition to come... NUCC Health Care Provider Taxonomy, code 163WP0809X
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 | |
|---|---|---|---|---|
| 163WP0809X | Adult Psychiatric/Mental Health Registered Nurse Psychiatric/Mental Health, Adult | 95228125 | CA | primary |
| 163WG0000X | General Practice Registered Nurse General Practice | 95228125 | 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 | 1003422080 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Sep 16, 2020 |
| Last updated | Sep 21, 2020 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | RN |
| Practice address |
1260 MORENA BLVD STE 100 San Diego, CA 92110 (619) 398-0355 Fax (619) 398-0350 |
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 | 4 | 2 | 2 | 0 | 8 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 8 | 2 | 4 | 0 | 7 |
Sum = 50 · next multiple of 10 = 50 · check digit = 0 · actual last digit = 0
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.