Quick answers
- Which hospitals does Gregory A. Haveman work at?
- Medicare's official clinician data lists Gregory A. Haveman at 3 hospitals: Kadlec Regional Medical Center, Providence St Mary Medical Center and St Anthony Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Gregory A. Haveman see patients?
- Medicare's clinician data lists 2 practice locations, including Walla Walla, WA. Call before your visit to confirm the address.
- What is Gregory A. Haveman's specialty?
- Medicare lists Otolaryngology as the primary specialty.
- Does Gregory A. Haveman accept Medicare assignment?
- Yes. Medicare's clinician data says Gregory A. Haveman 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 Gregory A. Haveman?
- (509) 525-5010, as listed in official Medicare / NPI Registry data.
- What is Gregory A. Haveman's NPI number?
- 1447415773. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Gregory A. Haveman works
Medicare's Facility Affiliation Data lists Gregory A. Haveman at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Kadlec Regional Medical CenterRichland, WA · Acute Care Hospital · CCN 500058
- Providence St Mary Medical CenterWalla Walla, WA · Acute Care Hospital · CCN 500002
- St Anthony HospitalPendleton, OR · Critical Access Hospital · CCN 381319
Practice locations
Addresses where Gregory A. Haveman is enrolled with Medicare (CMS data updated 2026-10-02).
- 320 W Willow StWalla Walla, WA 99362 (509) 525‑5010
- 55 W Tietan StWalla Walla, WA 99362
Group practices
Medicare enrollment lists Gregory A. Haveman as a member of this group (CMS data updated 2026-10-02).
- Privia Medical Group Washington PLLC76 clinicians in the group
Specialties
- Otolaryngologyprimary
Other ENT doctors in Walla Walla
Clinicians with the same Medicare primary specialty in Walla Walla, WA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Washington School Of Medicine |
| Graduation year | 2008 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1447415773 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- 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