KARL A GREENE MD
NPI 1376535492
Neurological Surgery in Pleasant Prairie, WI
About Karl A Greene Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
KARL A GREENE MD (NPI 1376535492) is an individual neurological surgery provider in Pleasant Prairie, Wisconsin, licensed in Wisconsin (43655) and active in the NPI registry since August 2005. He is enrolled in Medicare PECOS, is affiliated with Froedtert South Inc., and is a graduate of Stanford University School Of Medicine (1989).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 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
Karl A Greene Md 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
2Medicare enrollment records show Karl Greene reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Milwaukee, WI 53226
- Reassigned Medicare billing, Wisconsin enrollment
- 3,983 clinicians in this Medicare group
Sioux Falls, SD 57105
- Reassigned Medicare billing, South Dakota enrollment
- 1,097 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.
Froedtert South Inc.
Acute Care Hospitals · Pleasant Prairie, WIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 53158 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.
PLEASANT PRAIRIE, WI 53158
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 Karl Greene's NPI number?
The NPI number for Karl Greene is 1376535492. It was assigned to this individual provider in the NPPES registry on August 16, 2005.
Where is Karl Greene located?
Karl Greene practices at 9555 76th St, Pleasant Prairie, WI 53158. The listed phone number is (262) 577-8000.
What is Karl Greene's specialty?
The primary specialty registered for this NPI is Neurological Surgery with taxonomy code 207T00000X.
Is Karl Greene enrolled in Medicare?
Yes. Karl Greene 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 Karl Greene's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Karl Greene reassigns Medicare benefits to 2 organizations: The Medical College Of Wisconsin, Inc. (Milwaukee, WI) and Sanford Medical Center (Sioux Falls, SD). 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 Karl Greene's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Karl Greene accept?
Health plans from Anthem Blue Cross and Blue Shield, Aspirus Health Plan, Network Health, Wellmark Health Plan of Iowa, Inc. and Wellmark of South Dakota, Inc. list Karl Greene 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 Karl Greene affiliated with any hospitals?
According to CMS data, Karl Greene is affiliated with Froedtert South Inc..
When was this NPI record last updated?
The NPPES record for Karl Greene was last updated on June 27, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Karl A Greene, MD · NPI 1376535492
Neurological Surgery physician in Pleasant Prairie, Wisconsin. Individual provider, active in the CMS NPPES registry since August 16, 2005.
## Identity
- **NPI:** 1376535492 (Entity type: Individual)
- **Enumerated:** August 16, 2005
- **Primary specialty:** Neurological Surgery · taxonomy 207T00000X
- **State license:** 43655 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 9555 76TH ST, Pleasant Prairie, WI 53158-1984
- **Phone:** (262) 577-8000 · **Fax:** (262) 577-8869
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): The Medical College Of Wisconsin, Inc. (NPI 1699720086, Milwaukee, WI); Sanford Medical Center (NPI 1093090342, Sioux Falls, SD) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Stanford University School Of Medicine, class of 1989
## Record status
- **NPPES last updated:** June 27, 2024
- **Other identifiers:** Medicaid 34125200 (WI); Medicaid 1376535492 (WI)
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Source: [NPI Profile](https://npiprofile.com/npi/1376535492) · Data from the CMS NPPES public registry.