MARY PAT GRETEMAN ARNP, NNP-BC
NPI 1053547471
Nurse Practitioner - Neonatal, Critical Care in Iowa City, IA
About Mary Pat Greteman Arnp, Nnp-bc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARY PAT GRETEMAN ARNP, NNP-BC (NPI 1053547471) is an individual neonatal, critical care provider in Iowa City, Iowa, licensed in Iowa (K076749) and active in the NPI registry since June 2009. She is enrolled in Medicare PECOS and maintains a secondary practice location in Chicago.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 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)
Mary Pat Greteman Arnp, Nnp-bc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Mary Greteman reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Iowa City, IA 52242
- Reassigned Medicare billing, Iowa enrollment
- 2,190 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 52242 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.
IOWA CITY, IA 52242
IOWA CITY, IA 52242
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 Greteman's NPI number?
The NPI number for Mary Greteman is 1053547471. It was assigned to this individual provider in the NPPES registry on June 1, 2009.
Where is Mary Greteman located?
Mary Greteman practices at 200 Hawkins Dr, Iowa City, IA 52242. The listed phone number is (888) 573-5437.
What is Mary Greteman's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Neonatal, Critical Care, with taxonomy code 363LN0005X.
Is Mary Greteman enrolled in Medicare?
Yes. Mary Greteman is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Mary Greteman's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mary Greteman reassigns Medicare benefits to State University Of Iowa (Iowa City, IA). The 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 Greteman's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mary Greteman accept?
Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from NH Healthy Families, Ambetter from Sunflower Health Plan and Oscar Insurance Company and 2 other insurers list Mary Greteman 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 Mary Greteman was last updated on March 17, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.
# Mary Pat Greteman, ARNP, NNP-BC · NPI 1053547471
Neonatal, Critical Care physician in Iowa City, Iowa. Individual provider, active in the CMS NPPES registry since June 1, 2009.
## Identity
- **NPI:** 1053547471 (Entity type: Individual)
- **Enumerated:** June 1, 2009
- **Primary specialty:** Nurse Practitioner - Neonatal, Critical Care · taxonomy 363LN0005X
- **State license:** K076749 (Iowa)
- **Sole proprietor:** No
## Practice location
- **Address:** 200 HAWKINS DR, Iowa City, IA 52242-1009
- **Phone:** (888) 573-5437
## 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:** State University Of Iowa (NPI 1114905387, Iowa City, IA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** March 17, 2018
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Source: [NPI Profile](https://npiprofile.com/npi/1053547471) · Data from the CMS NPPES public registry.