MARISSA HAHN MD
NPI 1831518489
Emergency Medicine in Issaquah, WA
About Marissa Hahn Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARISSA HAHN MD (NPI 1831518489) is an individual emergency medicine provider in Issaquah, Washington, licensed in Washington (60757309) and active in the NPI registry since April 2014. She is enrolled in Medicare PECOS, maintains 3 additional practice locations, and is a graduate of University Of Washington School Of Medicine (2014).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 3
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
Marissa Hahn 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
3Medicare enrollment records show Marissa Hahn reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Issaquah, WA 98029
- Reassigned Medicare billing, Washington enrollment
- 101 clinicians in this Medicare group
Renton, WA 98057
- Reassigned Medicare billing, Washington enrollment
- 2,678 clinicians in this Medicare group
Arlington, WA 98223
- Reassigned Medicare billing, Washington enrollment
- 519 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 98029 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.
ISSAQUAH, WA 98029
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 Marissa Hahn's NPI number?
The NPI number for Marissa Hahn is 1831518489. It was assigned to this individual provider in the NPPES registry on April 10, 2014.
Where is Marissa Hahn located?
Marissa Hahn practices at 751 NE Blakely Dr, Issaquah, WA 98029. The listed phone number is (425) 381-6173.
What is Marissa Hahn's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Marissa Hahn enrolled in Medicare?
Yes. Marissa Hahn 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 Marissa Hahn's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Marissa Hahn reassigns Medicare benefits to 3 organizations: Eastside Emergency Physicians PLLC (Issaquah, WA), Kaiser Foundation Health Plan Of Washington (Renton, WA) and Northwest Emergency Physicians LLC (Arlington, 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 Marissa Hahn's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Marissa Hahn was last updated on April 8, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# Marissa Hahn, MD · NPI 1831518489
Emergency Medicine physician in Issaquah, Washington. Individual provider, active in the CMS NPPES registry since April 10, 2014.
## Identity
- **NPI:** 1831518489 (Entity type: Individual)
- **Enumerated:** April 10, 2014
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 60757309 (Washington)
- **Sole proprietor:** No
## Practice location
- **Address:** 751 NE BLAKELY DR, Issaquah, WA 98029-6201
- **Phone:** (425) 381-6173
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Eastside Emergency Physicians PLLC (NPI 1689683229, Issaquah, WA); Kaiser Foundation Health Plan Of Washington (NPI 1124264577, Renton, WA); Northwest Emergency Physicians LLC (NPI 1235172370, Arlington, WA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Washington School Of Medicine, class of 2014
## Record status
- **NPPES last updated:** April 8, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1831518489) · Data from the CMS NPPES public registry.