Quick answers
- Where does Tammy R. Barrett see patients?
- Medicare's clinician data lists 1 practice location in Issaquah, WA. Call before your visit to confirm the address.
- What is Tammy R. Barrett's specialty?
- Medicare lists Certified Registered Nurse Anesthetist (CRNA) as the primary specialty.
- Does Tammy R. Barrett accept Medicare assignment?
- Yes. Medicare's clinician data says Tammy R. Barrett 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 Tammy R. Barrett?
- (425) 454-4768, as listed in official Medicare / NPI Registry data.
- What is Tammy R. Barrett's NPI number?
- 1346248192. 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 Tammy R. Barrett is enrolled with Medicare (CMS data updated 2026-10-02).
- 1301 4th Ave NE, Suite 301Issaquah, WA 98027 (425) 454‑4768
Group practices
Medicare enrollment lists Tammy R. Barrett as a member of this group (CMS data updated 2026-10-02).
- Washington Gastroenterology PLLC143 clinicians in the group
Specialties
Find other clinicians: Certified Registered Nurse Anesthetist (CRNA), Washington →
Other nurse anesthetists in Issaquah
Clinicians with the same Medicare primary specialty in Issaquah, WA — not a recommendation.
Clinician information
| Credential | CNA |
|---|---|
| Graduation year | 2000 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1346248192 |
| 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