Quick answers
- Where does Dennis J. Haack see patients?
- Medicare's clinician data lists 6 practice locations, including Seattle, WA. Call before your visit to confirm the address.
- What is Dennis J. Haack's specialty?
- Medicare lists Family Practice as the primary specialty.
- Does Dennis J. Haack accept Medicare assignment?
- Yes. Medicare's clinician data says Dennis J. Haack accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Dennis J. Haack?
- (206) 296-4990, as listed in official Medicare / NPI Registry data.
- What is Dennis J. Haack's NPI number?
- 1417052648. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Dennis J. Haack is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 6; the Medicare profile lists all.
- 10521 Meridian Ave NSeattle, WA 98133 (206) 296‑4990
- 12721 30th Ave NE, Suite 101Seattle, WA 98125 (206) 417‑0326
- 1629 N 45th StSeattle, WA 98103 (206) 633‑3350
- 1930 Post AlySeattle, WA 98101 (206) 728‑4143
- 4400 37th Ave SSeattle, WA 98118 (206) 461‑6957
Group practices
Medicare enrollment lists Dennis J. Haack as a member of this group (CMS data updated 2026-10-02).
- Neighborcare Health99 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Seattle
Clinicians with the same Medicare primary specialty in Seattle, WA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Kansas School Of Med (kc/wich/sal) |
| Graduation year | 1984 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1417052648 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians