WILLIAM COOPER PROCTER MALONEY DO
NPI 1861021594
Emergency Medicine in Joint Base Lewis Mcchord, WA
About William Cooper Procter Maloney Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WILLIAM COOPER PROCTER MALONEY DO (NPI 1861021594) is an individual emergency medicine provider in Joint Base Lewis Mcchord, Washington, licensed in Washington (DO.OP.61679799) and active in the NPI registry since April 2020. He is enrolled in Medicare PECOS, is affiliated with Capital Medical Center, and is a graduate of Other (2022).
NPPES Registry Identity
Specialties & Licenses
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
William Cooper Procter Maloney Do is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show William Maloney reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Olympia, WA 98502
- Reassigned Medicare billing, Washington enrollment
- 58 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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Capital Medical Center
Acute Care Hospitals · Olympia, WAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 98431 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.
TACOMA, WA 98431
JOINT BASE LEWIS MCCHORD, WA 98431
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 William Maloney's NPI number?
The NPI number for William Maloney is 1861021594. It was assigned to this individual provider in the NPPES registry on April 4, 2020.
Where is William Maloney located?
William Maloney practices at 9040A Jackson Ave, Joint Base Lewis Mcchord, WA 98431. The listed phone number is (253) 968-1110.
What is William Maloney's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is William Maloney enrolled in Medicare?
Yes. William Maloney is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for William Maloney's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Maloney reassigns Medicare benefits to Olympia Emergency Care Physicians PLLC (Olympia, 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 William Maloney's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is William Maloney affiliated with any hospitals?
According to CMS data, William Maloney is affiliated with Capital Medical Center.
When was this NPI record last updated?
The NPPES record for William Maloney was last updated on July 23, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.
# William Cooper Procter Maloney, DO · NPI 1861021594
Emergency Medicine physician in Joint Base Lewis Mcchord, Washington. Individual provider, active in the CMS NPPES registry since April 4, 2020.
## Identity
- **NPI:** 1861021594 (Entity type: Individual)
- **Enumerated:** April 4, 2020
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** DO.OP.61679799 (Washington)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 9040A JACKSON AVE, Joint Base Lewis Mcchord, WA 98431-3983
- **Phone:** (253) 968-1110
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Olympia Emergency Care Physicians PLLC (NPI 1396498671, Olympia, WA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2022
## Record status
- **NPPES last updated:** July 23, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1861021594) · Data from the CMS NPPES public registry.