MARY MUGGLI WEIMER NP-C
NPI 1811466741
Nurse Practitioner - Acute Care in Miles City, MT
About Mary Muggli Weimer Np-c NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARY MUGGLI WEIMER NP-C (NPI 1811466741) is an individual acute care provider in Miles City, Montana, licensed in Montana (127060) and active in the NPI registry since November 2018. She is enrolled in Medicare PECOS, is affiliated with Billings Clinic, and is a graduate of Other (2017).
NPPES Registry Identity
Specialties & Licenses 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
Mary Muggli Weimer Np-c 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 Reassignment
Medicare enrollment records show Mary Weimer reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Miles City, MT 59301
- Reassigned Medicare billing, Montana enrollment
- Also billed through NPI 1225201825 (Montana)
- 29 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 6
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 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Billings Clinic
Acute Care Hospitals · Billings, MTSt Vincent Healthcare
Acute Care Hospitals · Billings, MTHoly Rosary Healthcare
Critical Access Hospitals · Miles City, MTPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 59301 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims 2
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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 Mary Weimer's NPI number?
The NPI number for Mary Weimer is 1811466741. It was assigned to this individual provider in the NPPES registry on November 20, 2018.
Where is Mary Weimer located?
Mary Weimer practices at 2600 Wilson St, Miles City, MT 59301. The listed phone number is (406) 233-2600.
What is Mary Weimer's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Acute Care, with taxonomy code 363LA2100X.
Is Mary Weimer enrolled in Medicare?
Yes. Mary Weimer 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 organization bills Medicare for Mary Weimer's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mary Weimer reassigns Medicare benefits to Holy Rosary Healthcare (Miles City, MT). 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 Weimer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mary Weimer accept?
Health plans from Blue Cross and Blue Shield of Montana, Mountain Health CO-OP and Providence Health Plan list Mary Weimer 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 Mary Weimer affiliated with any hospitals?
According to CMS data, Mary Weimer is affiliated with Billings Clinic, St Vincent Healthcare and Holy Rosary Healthcare.
When was this NPI record last updated?
The NPPES record for Mary Weimer was last updated on November 20, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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 Muggli Weimer, NP-C · NPI 1811466741
Acute Care physician in Miles City, Montana. Individual provider, active in the CMS NPPES registry since November 20, 2018.
## Identity
- **NPI:** 1811466741 (Entity type: Individual)
- **Enumerated:** November 20, 2018
- **Primary specialty:** Nurse Practitioner - Acute Care · taxonomy 363LA2100X
- **State license:** 127060 (Montana)
- **Sole proprietor:** No
## Practice location
- **Address:** 2600 WILSON ST, Miles City, MT 59301-5094
- **Phone:** (406) 233-2600
## 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:** Holy Rosary Healthcare (NPI 1396074548, Miles City, MT), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2017
## Record status
- **NPPES last updated:** November 20, 2018
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Source: [NPI Profile](https://npiprofile.com/npi/1811466741) · Data from the CMS NPPES public registry.