Quick answers
- Where does Gregory S. Sidell see patients?
- Medicare's clinician data lists 3 practice locations, including Tacoma, WA and Seattle, WA. Call before your visit to confirm the address.
- What is Gregory S. Sidell's specialty?
- Medicare lists Psychiatry as the primary specialty.
- Does Gregory S. Sidell accept Medicare assignment?
- Yes. Medicare's clinician data says Gregory S. Sidell 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.
- Does Gregory S. Sidell offer telehealth?
- Medicare's clinician data says Gregory S. Sidell offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Gregory S. Sidell?
- (206) 467-6300, as listed in official Medicare / NPI Registry data.
- What is Gregory S. Sidell's NPI number?
- 1780603530. 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 Gregory S. Sidell is enrolled with Medicare (CMS data updated 2026-10-02).
- 1530 S Union Ave, Suite 14Tacoma, WA 98405 (206) 467‑6300
- 4041 Ruston Way, Suite 202Tacoma, WA 98402 (253) 693‑0022
- 805 Madison St, Suite 401Seattle, WA 98104 (360) 491‑8002
Group practices
Medicare enrollment lists Gregory S. Sidell as a member of this group (CMS data updated 2026-10-02).
- Seattle Neuropsychiatric Treatment Center PLLC14 clinicians in the group
Specialties
- Psychiatryprimary
Other psychiatrists in Tacoma
Clinicians with the same Medicare primary specialty in Tacoma, WA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Indiana University School Of Medicine |
| Graduation year | 1988 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1780603530 |
| 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