DR. JASON WILLIAM HARPER MD
NPI 1336305911
Internal Medicine - Gastroenterology in Seattle, WA
About Dr. Jason William Harper Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JASON WILLIAM HARPER MD (NPI 1336305911) is an individual gastroenterology provider in Seattle, Washington, licensed in Washington (MD60238161) and active in the NPI registry since August 2008. He is enrolled in Medicare PECOS, is affiliated with University Of Washington Medical Ctr, and maintains a secondary practice location in Issaquah.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Other Identifiers 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 and accepts Medicare assignment
Dr. Jason William Harper 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 Jason Harper 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
- Also billed through NPI 1720023641 (Washington)
- 38 clinicians in this Medicare group
Seattle, WA 98104
- Reassigned Medicare billing, Washington enrollment
- 1,270 clinicians in this Medicare group
Seattle, WA 98104
- Reassigned Medicare billing, Washington enrollment
- 4,364 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 8
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 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
University Of Washington Medical Ctr
Acute Care Hospitals · Seattle, WASwedish Medical Center
Acute Care Hospitals · Seattle, WAHarborview Medical Center
Acute Care Hospitals · Seattle, WASwedish Issaquah
Acute Care Hospitals · Issaquah, WAPhysician 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.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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
SEATTLE, WA 98104
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 Jason Harper's NPI number?
The NPI number for Jason Harper is 1336305911. It was assigned to this individual provider in the NPPES registry on August 2, 2008.
Where is Jason Harper located?
Jason Harper practices at 1221 Madison St Ste 1220, Seattle, WA 98104. The listed phone number is (206) 215-4250.
What is Jason Harper's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.
Is Jason Harper enrolled in Medicare?
Yes. Jason Harper 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 Jason Harper's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Jason Harper reassigns Medicare benefits to 3 organizations: Pacmed Clinics (Seattle, WA), Swedish Health Services (Seattle, WA) and The Association Of University Physicians (Seattle, 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 Jason Harper's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Jason Harper accept?
Health plans from Ambetter Health, Premera Blue Cross Blue Shield of Alaska and Providence Health Plan list Jason Harper 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 Jason Harper affiliated with any hospitals?
According to CMS data, Jason Harper is affiliated with University Of Washington Medical Ctr, Swedish Medical Center, Harborview Medical Center and Swedish Issaquah.
When was this NPI record last updated?
The NPPES record for Jason Harper was last updated on January 12, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.
# Dr. Jason William Harper, MD · NPI 1336305911
Gastroenterology physician in Seattle, Washington. Individual provider, active in the CMS NPPES registry since August 2, 2008.
## Identity
- **NPI:** 1336305911 (Entity type: Individual)
- **Enumerated:** August 2, 2008
- **Primary specialty:** Internal Medicine - Gastroenterology · taxonomy 207RG0100X
- **State license:** MD60238161 (Washington)
- **Sole proprietor:** No
## Practice location
- **Address:** 1221 MADISON ST STE 1220, Seattle, WA 98104-1356
- **Phone:** (206) 215-4250 · **Fax:** (206) 215-4252
## 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): Pacmed Clinics (NPI 1437202249, Seattle, WA); Swedish Health Services (NPI 1689612954, Seattle, WA); The Association Of University Physicians (NPI 1023041159, Seattle, WA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Columbia University College Of Physicians And Surgeons, class of 2008
## Record status
- **NPPES last updated:** January 12, 2026
- **Other identifiers:** Medicaid 2018493 (WA)
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Source: [NPI Profile](https://npiprofile.com/npi/1336305911) · Data from the CMS NPPES public registry.