ANTHONY Z DASH MD
NPI 1841285475
Internal Medicine - Nephrology in Seattle, WA
About Anthony Z Dash Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ANTHONY Z DASH MD (NPI 1841285475) is an individual nephrology provider in Seattle, Washington, licensed in Washington (MD60609653) and active in the NPI registry since September 2005. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Anthony Z Dash Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
3Medicare enrollment records show Anthony Dash reassigns Medicare billing to 3 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
- 1,270 clinicians in this Medicare group
Seattle, WA 98104
- Reassigned Medicare billing, Washington enrollment
- 911 clinicians in this Medicare group
Everett, WA 98201
- Reassigned Medicare billing, Washington enrollment
- 1,285 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 3
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 98104 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SEATTLE, WA 98104
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 Anthony Dash's NPI number?
The NPI number for Anthony Dash is 1841285475. It was assigned to this individual provider in the NPPES registry on September 20, 2005. The provider is also known as Anthony Z Zelger MD.
Where is Anthony Dash located?
Anthony Dash practices at 904 7th Ave, Seattle, WA 98104. The listed phone number is (206) 860-5575.
What is Anthony Dash's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.
Is Anthony Dash enrolled in Medicare?
Yes. Anthony Dash is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Anthony Dash's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Anthony Dash reassigns Medicare benefits to 3 organizations: Swedish Health Services (Seattle, WA), The Polyclinic (Seattle, WA) and Optum Care Washington PLLC (Everett, 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 Anthony Dash's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Anthony Dash accept?
Health plans from Premera Blue Cross Blue Shield of Alaska, Providence Health Plan and Taro Health list Anthony Dash 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.
When was this NPI record last updated?
The NPPES record for Anthony Dash was last updated on April 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 months 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.
# Anthony Z Dash, MD · NPI 1841285475
Nephrology physician in Seattle, Washington. Individual provider, active in the CMS NPPES registry since September 20, 2005.
## Identity
- **NPI:** 1841285475 (Entity type: Individual)
- **Enumerated:** September 20, 2005
- **Primary specialty:** Internal Medicine - Nephrology · taxonomy 207RN0300X
- **State license:** MD60609653 (Washington)
- **Sole proprietor:** No
## Practice location
- **Address:** 904 7TH AVE, Seattle, WA 98104-1132
- **Phone:** (206) 860-5575
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Swedish Health Services (NPI 1689612954, Seattle, WA); The Polyclinic (NPI 1962824219, Seattle, WA); Optum Care Washington PLLC (NPI 1831186766, Everett, WA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** April 29, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1841285475) · Data from the CMS NPPES public registry.