MARK LINTON PETERSEN MS
NPI 1861551293
Counselor - Mental Health in Bellingham, WA
About Mark Linton Petersen Ms NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARK LINTON PETERSEN MS (NPI 1861551293) is an individual mental health provider in Bellingham, Washington, licensed in Washington (LH00004491) and active in the NPI registry since December 2006. He is enrolled in Medicare PECOS and is a graduate of Other (1986).
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 and accepts Medicare assignment
Mark Linton Petersen Ms 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 Reassignment
Medicare enrollment records show Mark Petersen reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Clallam Bay, WA 98326
- Reassigned Medicare billing, Washington enrollment
- 36 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.
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.
BELLINGHAM, WA 98226
BELLINGHAM, WA 98226
BELLINGHAM, WA 98226
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 Petersen's NPI number?
The NPI number for Mark Petersen is 1861551293. It was assigned to this individual provider in the NPPES registry on December 8, 2006. The provider is also known as M Linton Petersen Ms.
Where is Mark Petersen located?
Mark Petersen practices at 4545 Cordata Pkwy, Bellingham, WA 98226. The listed phone number is (360) 734-7310.
What is Mark Petersen's specialty?
The primary specialty registered for this NPI is Counselor, specializing in Mental Health, with taxonomy code 101YM0800X.
Is Mark Petersen enrolled in Medicare?
Yes. Mark Petersen 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 organization bills Medicare for Mark Petersen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mark Petersen reassigns Medicare benefits to Clallam County Public Hospital District No 1 (Clallam Bay, WA). The 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 Petersen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mark Petersen accept?
Health plans from Ambetter Health list Mark Petersen 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 Mark Petersen was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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 Linton Petersen, MS · NPI 1861551293
Mental Health provider in Bellingham, Washington. Individual provider, active in the CMS NPPES registry since December 8, 2006.
## Identity
- **NPI:** 1861551293 (Entity type: Individual)
- **Enumerated:** December 8, 2006
- **Primary specialty:** Counselor - Mental Health · taxonomy 101YM0800X
- **State license:** LH00004491 (Washington)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 4545 CORDATA PKWY, Bellingham, WA 98226-7123
- **Phone:** (360) 734-7310 · **Fax:** (360) 647-8336
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** Clallam County Public Hospital District No 1 (NPI 1235213034, Clallam Bay, WA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1986
## Record status
- **NPPES last updated:** July 8, 2007
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Source: [NPI Profile](https://npiprofile.com/npi/1861551293) · Data from the CMS NPPES public registry.