MS. MARY BLAINE ATWATER LMHC
NPI 1386303048
Counselor - Mental Health in Greenbank, WA
About Ms. Mary Blaine Atwater Lmhc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MS. MARY BLAINE ATWATER LMHC (NPI 1386303048) is an individual mental health provider in Greenbank, Washington, licensed in Washington (LH61218033) and active in the NPI registry since December 2021. She is enrolled in Medicare PECOS and is a graduate of Other (2001).
NPPES Registry Identity
Specialties & Licenses
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
Ms. Mary Blaine Atwater Lmhc 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 Mary Atwater reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Vancouver, WA 98662
- Reassigned Medicare billing, Washington enrollment
- 17 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.
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 Mary Atwater's NPI number?
The NPI number for Mary Atwater is 1386303048. It was assigned to this individual provider in the NPPES registry on December 9, 2021.
Where is Mary Atwater located?
Mary Atwater practices at 3745 Resort Road Unit D, Greenbank, WA 98253. The listed phone number is (360) 320-2949.
What is Mary Atwater's specialty?
The primary specialty registered for this NPI is Counselor, specializing in Mental Health, with taxonomy code 101YM0800X.
Is Mary Atwater enrolled in Medicare?
Yes. Mary Atwater 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 Mary Atwater's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mary Atwater reassigns Medicare benefits to Seatac Senior Psychology LLC (Vancouver, 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 Mary Atwater's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mary Atwater accept?
Health plans from BridgeSpan Health Company and Regence BlueCross BlueShield of Oregon list Mary Atwater 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 Mary Atwater was last updated on December 9, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Ms. Mary Blaine Atwater, LMHC · NPI 1386303048
Mental Health provider in Greenbank, Washington. Individual provider, active in the CMS NPPES registry since December 9, 2021.
## Identity
- **NPI:** 1386303048 (Entity type: Individual)
- **Enumerated:** December 9, 2021
- **Primary specialty:** Counselor - Mental Health · taxonomy 101YM0800X
- **State license:** LH61218033 (Washington)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 3745 RESORT ROAD, UNIT D, Greenbank, WA 98253
- **Phone:** (360) 320-2949
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** Seatac Senior Psychology LLC (NPI 1639306582, Vancouver, WA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2001
## Record status
- **NPPES last updated:** December 9, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1386303048) · Data from the CMS NPPES public registry.