MARY ENGLISH LACY M.D.
NPI 1598064040
Hospitalist in Kirkland, WA
About Mary English Lacy M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARY ENGLISH LACY M.D. (NPI 1598064040) is an individual hospitalist provider in Kirkland, Washington, licensed in Washington (60391139) and active in the NPI registry since March 2011. She is enrolled in Medicare PECOS, is affiliated with Providence Regional Medical Center Everett, and is a graduate of University Of Louisville School Of Medicine (2011).
NPPES Registry Identity
Specialties & Licenses 2
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
Mary English Lacy M.d. 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
4Medicare enrollment records show Mary Lacy reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Kirkland, WA 98034
- Reassigned Medicare billing, Washington enrollment
- 1,074 clinicians in this Medicare group
Mill Creek, WA 98012
- Reassigned Medicare billing, Washington enrollment
- 705 clinicians in this Medicare group
Seattle, WA 98122
- Reassigned Medicare billing, Washington enrollment
- 911 clinicians in this Medicare group
Everett, WA 98201
- Reassigned Medicare billing, Washington enrollment
- 1,285 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.
Providence Regional Medical Center Everett
Acute Care Hospitals · Everett, WAEvergreenhealth Monroe
Acute Care Hospitals · Monroe, WAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 98034 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.
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 Lacy's NPI number?
The NPI number for Mary Lacy is 1598064040. It was assigned to this individual provider in the NPPES registry on March 23, 2011.
Where is Mary Lacy located?
Mary Lacy practices at Evergreen Hospital 12040 NE 128th St, Kirkland, WA 98034. The listed phone number is (859) 583-6273.
What is Mary Lacy's specialty?
The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.
Is Mary Lacy enrolled in Medicare?
Yes. Mary Lacy 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 Mary Lacy's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mary Lacy reassigns Medicare benefits to 4 organizations: King County Public Hospital District No 2 (Kirkland, WA), Providence Health & Services- Washington (Mill Creek, WA), The Polyclinic PLLC (Seattle, WA) and Optum Care Washington PLLC (Everett, 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 Mary Lacy's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mary Lacy accept?
Health plans from Premera Blue Cross Blue Shield of Alaska list Mary Lacy 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 Mary Lacy affiliated with any hospitals?
According to CMS data, Mary Lacy is affiliated with Providence Regional Medical Center Everett and Evergreenhealth Monroe.
When was this NPI record last updated?
The NPPES record for Mary Lacy was last updated on November 6, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 23 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.
# Mary English Lacy, M.D. · NPI 1598064040
Hospitalist physician in Kirkland, Washington. Individual provider, active in the CMS NPPES registry since March 23, 2011.
## Identity
- **NPI:** 1598064040 (Entity type: Individual)
- **Enumerated:** March 23, 2011
- **Primary specialty:** Hospitalist · taxonomy 208M00000X
- **State license:** 60391139 (Washington)
- **Sole proprietor:** No
## Practice location
- **Address:** EVERGREEN HOSPITAL, 12040 NE 128TH ST, Kirkland, WA 98034
- **Phone:** (859) 583-6273
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health
- **Bills Medicare through:** 4 organizations under Medicare reassignment (form CMS-855R): King County Public Hospital District No 2 (NPI 1548350713, Kirkland, WA); Providence Health & Services- Washington (NPI 1790014504, Mill Creek, WA); The Polyclinic PLLC (NPI 1174594634, Seattle, WA); Optum Care Washington PLLC (NPI 1831186766, Everett, WA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Louisville School Of Medicine, class of 2011
## Record status
- **NPPES last updated:** November 6, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1598064040) · Data from the CMS NPPES public registry.