BENJAMIN D GRASS M.D.
NPI 1467894121
Family Medicine in Ronan, MT
About Benjamin D Grass M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
BENJAMIN D GRASS M.D. (NPI 1467894121) is an individual family medicine provider in Ronan, Montana, licensed in Montana (50100) and active in the NPI registry since July 2013. He is enrolled in Medicare PECOS, is affiliated with St. Patrick Hospital, and maintains a secondary practice location in Polson.
NPPES Registry Identity
Specialties & Licenses
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 and accepts Medicare assignment
Benjamin D Grass M.d. 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
4Medicare enrollment records show Benjamin Grass reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Ronan, MT 59864
- Reassigned Medicare billing, Montana enrollment
- 77 clinicians in this Medicare group
Ronan, MT 59864
- Reassigned Medicare billing, Montana enrollment
- 325 clinicians in this Medicare group
Polson, MT 59860
- Reassigned Medicare billing, Montana enrollment
- 111 clinicians in this Medicare group
Seeley Lake, MT 59868
- Reassigned Medicare billing, Montana enrollment
- 91 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 7
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 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
St. Patrick Hospital
Acute Care Hospitals · Missoula, MTSt Luke Community Hospital
Critical Access Hospitals · Ronan, MTCommunity Hospital Of Anaconda
Critical Access Hospitals · Anaconda, MTBitterroot Health - Daly Hospital
Critical Access Hospitals · Hamilton, MTPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 59864 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
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 Benjamin Grass's NPI number?
The NPI number for Benjamin Grass is 1467894121. It was assigned to this individual provider in the NPPES registry on July 23, 2013.
Where is Benjamin Grass located?
Benjamin Grass practices at 107 6th Ave SW, Ronan, MT 59864. The listed phone number is (406) 676-4441.
What is Benjamin Grass's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Benjamin Grass enrolled in Medicare?
Yes. Benjamin Grass 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 Benjamin Grass's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Benjamin Grass reassigns Medicare benefits to 4 organizations: St Lukes Community Hospital (Ronan, MT), Providence Health & Services Mt (Ronan, MT), Providence St Joseph Medical Center (Polson, MT) and Partnership Health Center Inc. (Seeley Lake, MT). 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 Benjamin Grass's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Benjamin Grass accept?
Health plans from Blue Cross and Blue Shield of Montana, Mountain Health CO-OP and PacificSource Health Plans list Benjamin Grass 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 Benjamin Grass affiliated with any hospitals?
According to CMS data, Benjamin Grass is affiliated with St. Patrick Hospital, St Luke Community Hospital, Community Hospital Of Anaconda and Bitterroot Health - Daly Hospital.
When was this NPI record last updated?
The NPPES record for Benjamin Grass was last updated on June 15, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Benjamin D Grass, M.D. · NPI 1467894121
Family Medicine physician in Ronan, Montana. Individual provider, active in the CMS NPPES registry since July 23, 2013.
## Identity
- **NPI:** 1467894121 (Entity type: Individual)
- **Enumerated:** July 23, 2013
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** 50100 (Montana)
- **Sole proprietor:** No
## Practice location
- **Address:** 107 6TH AVE SW, Ronan, MT 59864-2634
- **Phone:** (406) 676-4441 · **Fax:** (406) 676-0835
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): St Lukes Community Hospital (NPI 1154566271, Ronan, MT); Providence Health & Services Mt (NPI 1669773651, Ronan, MT); Providence St Joseph Medical Center (NPI 1669655528, Polson, MT); Partnership Health Center Inc. (NPI 1083974661, Seeley Lake, MT) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2013
## Record status
- **NPPES last updated:** June 15, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1467894121) · Data from the CMS NPPES public registry.