MARK F LEONARD MD
NPI 1720023559
Emergency Medicine in Arlington, WA
About Mark F Leonard Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARK F LEONARD MD (NPI 1720023559) is an individual emergency medicine provider in Arlington, Washington, licensed in Washington (MD00027106) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS, is affiliated with Three Rivers Hospital, and is a graduate of Michigan State University College Of Human Medicine (1987).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 6
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
Mark F Leonard 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
5Medicare enrollment records show Mark Leonard reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Arlington, WA 98223
- Reassigned Medicare billing, Washington enrollment
- 519 clinicians in this Medicare group
Forks, WA 98331
- Reassigned Medicare billing, Washington enrollment
- 38 clinicians in this Medicare group
Brewster, WA 98812
- Reassigned Medicare billing, Washington enrollment
- Medicare enrollment name: Okanogan Douglas County Hospital Dist 1
- Also billed through NPI 1043363591 (Washington)
- 238 clinicians in this Medicare group
Omak, WA 98841
- Reassigned Medicare billing, Washington enrollment
- 179 clinicians in this Medicare group
South Bend, WA 98586
- Reassigned Medicare billing, Washington enrollment
- 104 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.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Three Rivers Hospital
Critical Access Hospitals · Brewster, WAForks Community Hospital
Critical Access Hospitals · Forks, WAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 98223 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.
ARLINGTON, WA 98223
ARLINGTON, WA 98223
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 Mark Leonard's NPI number?
The NPI number for Mark Leonard is 1720023559. It was assigned to this individual provider in the NPPES registry on June 17, 2006.
Where is Mark Leonard located?
Mark Leonard practices at 330 S Stillaguamish Ave, Arlington, WA 98223. The listed phone number is (360) 435-2133.
What is Mark Leonard's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Mark Leonard enrolled in Medicare?
Yes. Mark Leonard 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 Mark Leonard's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mark Leonard reassigns Medicare benefits to 5 organizations: Northwest Emergency Physicians LLC (Arlington, WA), Clallam County Public Hospital District No 1 (Forks, WA), Okanogan Douglas County Hospital Dist1 (Brewster, WA), Okanogan County Public Hospital District No. 3 (Omak, WA) and Pacific County Hospital District 2 (South Bend, 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 Mark Leonard's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mark Leonard accept?
Health plans from Ambetter Health list Mark Leonard 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 Mark Leonard affiliated with any hospitals?
According to CMS data, Mark Leonard is affiliated with Three Rivers Hospital and Forks Community Hospital.
When was this NPI record last updated?
The NPPES record for Mark Leonard was last updated on April 11, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.
# Mark F Leonard, MD · NPI 1720023559
Emergency Medicine physician in Arlington, Washington. Individual provider, active in the CMS NPPES registry since June 17, 2006.
## Identity
- **NPI:** 1720023559 (Entity type: Individual)
- **Enumerated:** June 17, 2006
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** MD00027106 (Washington)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 330 S STILLAGUAMISH AVE, Arlington, WA 98223-1642
- **Phone:** (360) 435-2133 · **Fax:** (360) 435-0513
## 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:** 5 organizations under Medicare reassignment (form CMS-855R): Northwest Emergency Physicians LLC (NPI 1235172370, Arlington, WA); Clallam County Public Hospital District No 1 (NPI 1891879680, Forks, WA); Okanogan Douglas County Hospital Dist1 (NPI 1578649794, Brewster, WA); Okanogan County Public Hospital District No. 3 (NPI 1255387403, Omak, WA); Pacific County Hospital District 2 (NPI 1295708683, South Bend, WA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Michigan State University College Of Human Medicine, class of 1987
## Record status
- **NPPES last updated:** April 11, 2008
- **Other identifiers:** Medicare UPIN E07738 (WA); Other 0220755 (WA); Medicare PIN P00411763 (WA); and 3 more
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Source: [NPI Profile](https://npiprofile.com/npi/1720023559) · Data from the CMS NPPES public registry.