DARWIN CORTINA VIERNES MD
NPI 1699968552
Anesthesiology in Seattle, WA
About Darwin Cortina Viernes Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DARWIN CORTINA VIERNES MD (NPI 1699968552) is an individual anesthesiology provider in Seattle, Washington, licensed in Washington (MD60171768) and active in the NPI registry since August 2007. He is enrolled in Medicare PECOS, is affiliated with Overlake Hospital Medical Center, and is a graduate of Other (2007).
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Darwin Cortina Viernes Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show Darwin Viernes reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Seattle, WA 98104
- Reassigned Medicare billing, Washington enrollment
- 4,364 clinicians in this Medicare group
Bellevue, WA 98004
- Reassigned Medicare billing, Washington enrollment
- 94 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Overlake Hospital Medical Center
Acute Care Hospitals · Bellevue, WAOther Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Darwin Viernes's NPI number?
The NPI number for Darwin Viernes is 1699968552. It was assigned to this individual provider in the NPPES registry on August 23, 2007.
Where is Darwin Viernes located?
Darwin Viernes practices at 325 9th Ave, Seattle, WA 98104. The listed phone number is (206) 744-4653.
What is Darwin Viernes's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Darwin Viernes enrolled in Medicare?
Yes. Darwin Viernes is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Darwin Viernes's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Darwin Viernes reassigns Medicare benefits to 2 organizations: The Association Of University Physicians (Seattle, WA) and Matrix Anesthesia, Ps (Bellevue, WA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Darwin Viernes's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Darwin Viernes accept?
Health plans from Premera Blue Cross Blue Shield of Alaska list Darwin Viernes as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Darwin Viernes affiliated with any hospitals?
According to CMS data, Darwin Viernes is affiliated with Overlake Hospital Medical Center.
When was this NPI record last updated?
The NPPES record for Darwin Viernes was last updated on June 18, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Darwin Cortina Viernes, MD · NPI 1699968552
Anesthesiology physician in Seattle, Washington. Individual provider, active in the CMS NPPES registry since August 23, 2007.
## Identity
- **NPI:** 1699968552 (Entity type: Individual)
- **Enumerated:** August 23, 2007
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** MD60171768 (Washington)
- **Sole proprietor:** No
## Practice location
- **Address:** 325 9TH AVE, Seattle, WA 98104-2420
- **Phone:** (206) 744-4653 · **Fax:** (206) 744-8800
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): The Association Of University Physicians (NPI 1023041159, Seattle, WA); Matrix Anesthesia, Ps (NPI 1831146422, Bellevue, WA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2007
## Record status
- **NPPES last updated:** June 18, 2011
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Source: [NPI Profile](https://npiprofile.com/npi/1699968552) · Data from the CMS NPPES public registry.