GRETA FRITZ MD
NPI 1730838830
Obstetrics & Gynecology in Green Bay, WI
About Greta Fritz Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GRETA FRITZ MD (NPI 1730838830) is an individual obstetrics & gynecology provider in Green Bay, Wisconsin, licensed in Wisconsin (87202-20) and active in the NPI registry since March 2022. She is enrolled in Medicare PECOS, maintains a secondary practice location in Oneida, and is a graduate of Other (2022).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Other Identifiers 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Greta Fritz Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
3Medicare enrollment records show Greta Fritz reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Green Bay, WI 54304
- Reassigned Medicare billing, Wisconsin enrollment
- 190 clinicians in this Medicare group
Green Bay, WI 54304
- Reassigned Medicare billing, Wisconsin enrollment
- 742 clinicians in this Medicare group
Sheboygan, WI 53081
- Reassigned Medicare billing, Wisconsin enrollment
- 673 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 54301 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.
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 Greta Fritz's NPI number?
The NPI number for Greta Fritz is 1730838830. It was assigned to this individual provider in the NPPES registry on March 23, 2022.
Where is Greta Fritz located?
Greta Fritz practices at 1821 S Webster Ave, Green Bay, WI 54301. The listed phone number is (920) 436-1360.
What is Greta Fritz's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.
Is Greta Fritz enrolled in Medicare?
Yes. Greta Fritz is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Greta Fritz's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Greta Fritz reassigns Medicare benefits to 3 organizations: Prevea Clinic, Inc. (Green Bay, WI), St Vincent Hospital-Hospital Sisters-Third Order Of St Francis (Green Bay, WI) and St. Nicholas Hospital-Sisters Of The Third Order Of St Francis (Sheboygan, WI). 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 Greta Fritz's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Greta Fritz accept?
Health plans from Anthem Blue Cross and Blue Shield, Network Health and Security Health Plan list Greta Fritz 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 Greta Fritz was last updated on September 10, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 44 days 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.
# Greta Fritz, MD · NPI 1730838830
Obstetrics & Gynecology physician in Green Bay, Wisconsin. Individual provider, active in the CMS NPPES registry since March 23, 2022.
## Identity
- **NPI:** 1730838830 (Entity type: Individual)
- **Enumerated:** March 23, 2022
- **Primary specialty:** Obstetrics & Gynecology · taxonomy 207V00000X
- **State license:** 87202-20 (Wisconsin)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 1821 S WEBSTER AVE, Green Bay, WI 54301-2253
- **Phone:** (920) 436-1360
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Prevea Clinic, Inc. (NPI 1306869276, Green Bay, WI); St Vincent Hospital-Hospital Sisters-Third Order Of St Francis (NPI 1285613638, Green Bay, WI); St. Nicholas Hospital-Sisters Of The Third Order Of St Francis (NPI 1275799413, Sheboygan, WI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2022
## Record status
- **NPPES last updated:** September 10, 2026
- **Other identifiers:** Medicaid 100423728 (WI)
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Source: [NPI Profile](https://npiprofile.com/npi/1730838830) · Data from the CMS NPPES public registry.