DR. MARGARET M. GRECO MD
NPI 1760686414
Pediatrics - Pediatric Cardiology in Madison, WI
About Dr. Margaret M. Greco Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MARGARET M. GRECO MD (NPI 1760686414) is an individual pediatric cardiology provider in Madison, Wisconsin, licensed in Wisconsin (66059-20) and active in the NPI registry since June 2007. She is enrolled in Medicare PECOS and is a graduate of Clvlnd Clinic Lerner College Of Med Of Case Wstn Rsv University (2004).
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
Dr. Margaret M. Greco 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
13Medicare enrollment records show Margaret Greco reassigns Medicare billing to 13 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Middleton, WI 53562
- Reassigned Medicare billing, Illinois and Wisconsin enrollments
- 29 clinicians in this Medicare group
Wisconsin Dells, WI 53965
- Reassigned Medicare billing, Wisconsin enrollment
- 189 clinicians in this Medicare group
Roscoe, IL 61073
- Reassigned Medicare billing, Illinois enrollment
- 474 clinicians in this Medicare group
Elm Grove, WI 53122
- Reassigned Medicare billing, Wisconsin enrollment
- 1,457 clinicians in this Medicare group
West Allis, WI 53227
- Reassigned Medicare billing, Wisconsin enrollment
- 4,609 clinicians in this Medicare group
Milwaukee, WI 53209
- Reassigned Medicare billing, Wisconsin enrollment
- 1,615 clinicians in this Medicare group
Saint Francis, WI 53235
- Reassigned Medicare billing, Wisconsin enrollment
- 960 clinicians in this Medicare group
Sheboygan, WI 53081
- Reassigned Medicare billing, Wisconsin enrollment
- 673 clinicians in this Medicare group
Stevens Point, WI 54482
- Reassigned Medicare billing, Wisconsin enrollment
- 633 clinicians in this Medicare group
Carol Stream, IL 60122
- Reassigned Medicare billing, Illinois enrollment
- 1,664 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.
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.
MADISON, WI 53792
MADISON, WI 53792
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 Margaret Greco's NPI number?
The NPI number for Margaret Greco is 1760686414. It was assigned to this individual provider in the NPPES registry on June 14, 2007.
Where is Margaret Greco located?
Margaret Greco practices at 600 Highland Ave H6/565, Madison, WI 53792. The listed phone number is (608) 264-4657.
What is Margaret Greco's specialty?
The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Cardiology, with taxonomy code 2080P0202X.
Is Margaret Greco enrolled in Medicare?
Yes. Margaret Greco 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 Margaret Greco's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Margaret Greco reassigns Medicare benefits to 13 organizations: University Of Wisconsin Medical Foundation, Inc (Middleton, WI), Mile Bluff Medical Center Inc (Wisconsin Dells, WI), Swedishamerican Hospital (Roscoe, IL), Gundersen Lutheran Medical Center Inc (Elm Grove, WI), Aurora Medical Group, Inc. (West Allis, WI) and 8 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 Margaret Greco's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Margaret Greco accept?
Health plans from Anthem Blue Cross and Blue Shield, Aspirus Health Plan, CareSource (Common Ground Healthcare), Dean Health Plan and Group Health Cooperative-SCW and 3 other insurers list Margaret Greco 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 Margaret Greco was last updated on January 14, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# Dr. Margaret M. Greco, MD · NPI 1760686414
Pediatric Cardiology physician in Madison, Wisconsin. Individual provider, active in the CMS NPPES registry since June 14, 2007.
## Identity
- **NPI:** 1760686414 (Entity type: Individual)
- **Enumerated:** June 14, 2007
- **Primary specialty:** Pediatrics - Pediatric Cardiology · taxonomy 2080P0202X
- **State license:** 66059-20 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 600 HIGHLAND AVE, H6/565, Madison, WI 53792-0001
- **Phone:** (608) 264-4657 · **Fax:** (608) 265-8065
## 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:** 13 organizations under Medicare reassignment (form CMS-855R): University Of Wisconsin Medical Foundation, Inc (NPI 1598784555, Middleton, WI); Mile Bluff Medical Center Inc (NPI 1487734380, Wisconsin Dells, WI); Swedishamerican Hospital (NPI 1386054062, Roscoe, IL); Gundersen Lutheran Medical Center Inc (NPI 1548992316, Elm Grove, WI); Aurora Medical Group, Inc. (NPI 1457592735, West Allis, WI); and 8 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Clvlnd Clinic Lerner College Of Med Of Case Wstn Rsv University, class of 2004
## Record status
- **NPPES last updated:** January 14, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1760686414) · Data from the CMS NPPES public registry.