JOSEPH R. LACY C.R.N.A
NPI 1598740599
Nurse Anesthetist, Certified Registered in Marshfield, WI
About Joseph R. Lacy C.r.n.a NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOSEPH R. LACY C.R.N.A (NPI 1598740599) is an individual nurse anesthetist, certified registered in Marshfield, Wisconsin, licensed in Wisconsin (113499-030) and active in the NPI registry since December 2005. He is enrolled in Medicare PECOS, is affiliated with Aspirus Wausau Hospital, and maintains a secondary practice location in Green Bay.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Other Identifiers 3
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
Joseph R. Lacy C.r.n.a 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
7Medicare enrollment records show Joseph Lacy reassigns Medicare billing to 7 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Marshfield, WI 54449
- Reassigned Medicare billing, Wisconsin enrollment
- 2,540 clinicians in this Medicare group
Marshfield, WI 54449
- Reassigned Medicare billing, Wisconsin enrollment
- Also billed through NPI 1952890873 (Wisconsin)
- 2,476 clinicians in this Medicare group
Owen, WI 54460
- Reassigned Medicare billing, Wisconsin enrollment
- Also billed through NPI 1053391730 (Wisconsin)
- 48 clinicians in this Medicare group
Athens, WI 54411
- Reassigned Medicare billing, Wisconsin enrollment
- 376 clinicians in this Medicare group
Wausau, WI 54401
- Reassigned Medicare billing, Wisconsin enrollment
- Medicare enrollment name: Langlade Hospital - Hotel Dieu Of St Joseph Of Antigo Wisconsin
- Also billed through NPI 1821151366 (Wisconsin)
- 321 clinicians in this Medicare group
Wausau, WI 54401
- Reassigned Medicare billing, Wisconsin enrollment
- 37 clinicians in this Medicare group
Green Bay, WI 54311
- Reassigned Medicare billing, Wisconsin enrollment
- 43 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.
Areas of Expertise CMS Part B claims
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Aspirus Wausau Hospital
Acute Care Hospitals · Wausau, WIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 54449 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.
MARSHFIELD, WI 54449
MARSHFIELD, WI 54449
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 Joseph Lacy's NPI number?
The NPI number for Joseph Lacy is 1598740599. It was assigned to this individual provider in the NPPES registry on December 13, 2005.
Where is Joseph Lacy located?
Joseph Lacy practices at 1000 N Oak Ave, Marshfield, WI 54449. The listed phone number is (715) 387-5511.
What is Joseph Lacy's specialty?
The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.
Is Joseph Lacy enrolled in Medicare?
Yes. Joseph 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 Joseph Lacy's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Joseph Lacy reassigns Medicare benefits to 7 organizations: Marshfield Clinic Inc (Marshfield, WI), Mchs Hospitals Inc (Marshfield, WI), Aspirus Stanley Hospital & Clinics, Inc. (Owen, WI), Aspirus Medford Hospital & Clinics, Inc. (Athens, WI), Langlade Memorial Hospital Hotel Dieu Of St Joseph (Wausau, WI) and 2 more organizations, listed in the Medicare section above. 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 Joseph Lacy's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Joseph Lacy accept?
Health plans from Anthem Blue Cross and Blue Shield list Joseph 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 Joseph Lacy affiliated with any hospitals?
According to CMS data, Joseph Lacy is affiliated with Aspirus Wausau Hospital.
When was this NPI record last updated?
The NPPES record for Joseph Lacy was last updated on July 27, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Joseph R. Lacy, C.R.N.A · NPI 1598740599
Nurse Anesthetist, Certified Registered physician in Marshfield, Wisconsin. Individual provider, active in the CMS NPPES registry since December 13, 2005.
## Identity
- **NPI:** 1598740599 (Entity type: Individual)
- **Enumerated:** December 13, 2005
- **Primary specialty:** Nurse Anesthetist, Certified Registered · taxonomy 367500000X
- **State license:** 113499-030 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 1000 N OAK AVE, Marshfield, WI 54449-3505
- **Phone:** (715) 387-5511
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging
- **Bills Medicare through:** 7 organizations under Medicare reassignment (form CMS-855R): Marshfield Clinic Inc (NPI 1952347981, Marshfield, WI); Mchs Hospitals Inc (NPI 1093221434, Marshfield, WI); Aspirus Stanley Hospital & Clinics, Inc. (NPI 1700866399, Owen, WI); Aspirus Medford Hospital & Clinics, Inc. (NPI 1760912919, Athens, WI); Langlade Memorial Hospital Hotel Dieu Of St Joseph (NPI 1871630863, Wausau, WI); and 2 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Wisconsin School Of Medicine, class of 1988
## Record status
- **NPPES last updated:** July 27, 2023
- **Other identifiers:** Other 044383; Medicaid 43333400 (WI); Other 430061296
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Source: [NPI Profile](https://npiprofile.com/npi/1598740599) · Data from the CMS NPPES public registry.