Outpatient Anesthesia Services, Pllc
Outpatient Anesthesia Services, Pllc is a healthcare organization registered as Anesthesiology Physician in Everett, WA, holding Type 2 (organization) NPI 1659458149 since 2006. The authorized official on file is Michael Flacco, Provider Designee.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1659458149 |
|---|---|
| Entity type | Organization (Type 2) |
| Legal business name | Outpatient Anesthesia Services, Pllc |
| Practice address | 1100 PACIFIC AVE, SUITE 100, Everett, WA, 98201 |
| Phone | 4253392433 |
| Enumeration date | 2006-11-01 |
| Last updated in NPPES | 2020-08-22 |
Authorized official
| Name | Michael Flacco |
|---|---|
| Title | Provider Designee |
| Phone | 2062441212 |
Taxonomy & classification
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 207L00000X | Anesthesiology Physician | Primary | — | — |
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 7119225 | Medicaid | WA | — |
| 8785OU | Other | WA | REGENCE GROUP PIN |
| 0175855 | Other | WA | L&I GROUP PIN |
Copy-ready billing details
Provider: Outpatient Anesthesia Services, Pllc NPI: 1659458149 Taxonomy: 207L00000X (Anesthesiology Physician) Address: 1100 PACIFIC AVE, SUITE 100, Everett, WA, 98201
Providers at this address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1073503181 | Roxanne Hertzog | Individual | Anesthesiology Physician | Everett, WA |
| 1750371878 | Michael Hom | Individual | Anesthesiology Physician | Everett, WA |
| 1831180884 | Michael Flacco | Individual | Anesthesiology Physician | Everett, WA |
| 1114998168 | Howard Barker | Individual | Orthopaedic Surgery Physician | Everett, WA |
| 1659340289 | Todd Havener | Individual | Orthopaedic Hand Surgery Physician | Everett, WA |
| 1013986488 | Peter Kinahan | Individual | Orthopaedic Surgery Physician | Everett, WA |
| 1174592588 | Jeff Mason | Individual | Orthopaedic Surgery Physician | Everett, WA |
| 1164491429 | Ralph Haller | Individual | Orthopaedic Surgery Physician | Everett, WA |
Verify this record
Cross-check NPI 1659458149 against the authoritative CMS record: view Outpatient Anesthesia Services, Pllc on the official NPPES registry .
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty. Read the full guide or validate an NPI number.
Frequently asked questions
How current is this record?
Where is Outpatient Anesthesia Services, Pllc located?
Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2020-08-22.