Diana Ziegler, MFT
Diana Ziegler, MFT is a Marriage & Family Therapist in Seattle, WA, registered under NPI 1003261843. NPPES records them as a sole proprietor, meaning the practice is not incorporated as a separate legal entity.
Getting there
Here is what surrounds this office in Seattle, based on OpenStreetMap data collected Sep 14, 2026. Parking is available about 162 ft away. There is EV charging 0.37 mi from the office (EVgo) — useful if you are driving in from out of town. The nearest transit stop is 518 ft away, served by Greenwood Avenue North & North 100th Street. A pharmacy sits 0.38 mi from the entrance (QFC pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.25 mi away.
Getting here and what is nearby
Parking 109 ft ~1 min
Parking 130 ft ~1 min
Parking 162 ft ~1 min
Transit Greenwood Avenue North & North 103rd Street 258 ft ~1 min
Transit Greenwood Avenue North & Holman Road North 476 ft ~2 min
Coffee Bánh Town 487 ft ~2 min
10414 Holman Road North, Seattle 98133
Mo-Sa 11:00-21:00; Su 11:00-20:00
Restaurant Waca Maya 491 ft ~2 min
10410 Holman Road North, Seattle 98133
Tu-Th, Sa 11:00-20:00; Su 12:00-20:00; Fr 11:30-20:00
Transit Greenwood Avenue North & North 100th Street 518 ft ~2 min
Restaurant Yopparai 502 ft ~2 min
10406 Holman Road North, Seattle 98133
Mo-Th 16:00-21:30; Fr-Sa 16:00-22:30; Su off
Restaurant Gyro Time Mediterranean Food 528 ft ~3 min
10400 Greenwood Avenue North, Seattle 98133
Mo-Su 11:00-21:00
Convenience A-1 Mart 564 ft ~3 min
Coffee One Million Cafe 737 ft ~3 min
323 North 105th Street, Seattle 98133
Gas station 76 828 ft ~4 min
Coffee Diva Espresso 0.25 mi ~6 min
10555 Greenwood Avenue North, Seattle 98133
Mo-Fr 06:30-17:00; Sa-Su 07:00-17:00
Convenience Food Mart 0.34 mi ~7 min
9745 4th Avenue Northwest, Seattle 98117
Gas station Shell 0.35 mi ~7 min
EV charging EVgo 0.37 mi ~8 min
Pharmacy QFC pharmacy 0.38 mi ~8 min
9999 Holman Road Northwest
Mo-Fr 09:00-13:00,13:30-20:00; Sa 09:00-13:00,13:30-18:00; Su 11:00-13:00,13:30-18:00
Grocery QFC 0.39 mi ~8 min
Grocery Tienda Latina El Amiguito 0.50 mi ~10 min
10109 Aurora Avenue North, Seattle 98133
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 |
|---|---|---|
| 1201-124 | WI | Marriage & Family Therapist primary |
This provider holds licence 1201-124 issued in WI. 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 - Marriage And Family Therapist
- PAC ID
- 2062935281
Enrolled in Medicare 5 times, across 5 states:
| State | Enrollment ID | Provider type |
|---|---|---|
| Wisconsin | I20250328001570 | Practitioner - Marriage And Family Therapist |
| Washington | I20250630001519 | Practitioner - Marriage And Family Therapist |
| Illinois | I20260226004255 | Practitioner - Marriage And Family Therapist |
| California | I20260228000748 | Practitioner - Marriage And Family Therapist |
| Vermont | I20260614000145 | Practitioner - Marriage And Family Therapist |
Medicare enrolment is recorded as approved under the provider type Practitioner - Marriage And Family Therapist. There are 5 separate enrolment records across 5 states (WI, WA, IL, CA, VT). Multiple enrolments usually mean the provider bills Medicare from more than one practice location, or has kept an earlier enrolment after moving. Each record carries its own enrolment ID, listed above. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Marriage & Family Therapist covers
A marriage and family therapist is a person with a master's degree in marriage and family therapy, or a master's or doctoral degree in a related mental health field with substantially equivalent coursework in marriage and family therapy, who receives supervised clinical experience, or a person who meets the state requirements to practice as a marriage and family therapist. A marriage and family therapist treats mental and emotional disorders within the context of marriage and family systems. A marriage and family therapist provides mental health and counseling services to individuals, couples, families, and groups. NUCC Health Care Provider Taxonomy, code 106H00000X
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 | 1003261843 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Apr 29, 2016 |
| Last updated | Dec 23, 2025 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Female |
| Credential | MFT |
| Practice address |
10215 GREENWOOD AVE N UNIT S509 Seattle, WA 98133 (608) 228-6272 |
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 | 2 | 6 | 1 | 8 | 4 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 4 | 6 | 2 | 8 | 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.