Marilyn F Grams, MD - Medicare Internal Medicine in Billings, MT

Marilyn F Grams, MD is a medicare enrolled "Internal Medicine - Geriatric Medicine" physician in Billings, Montana. She went to University Of Utah School Of Medicine and graduated in 1978 and has 43 years of diverse experience with area of expertise as Internal Medicine. She is a member of the group practice St Peters Community Hospital, St. John's Lutheran Hospital Inc and her current practice location is 2825 8th Ave N, Billings, Montana. You can reach out to her office (for appointments etc.) via phone at (406) 238-2500.

Marilyn F Grams is licensed to practice in Montana (license number 10557) and she also participates in the medicare program. She may accept medicare assignments (which means she may accept the Medicare-approved amount; you may be billed for more than the Medicare deductible and coinsurance) and her NPI Number is 1669492104.

Contact Information

Marilyn F Grams, MD
2825 8th Ave N,
Billings, MT 59101-0909
(406) 238-2500
Not Available

Map and Direction




Physician's Profile

Full NameMarilyn F Grams
GenderFemale
SpecialityInternal Medicine
Experience43 Years
Location2825 8th Ave N, Billings, Montana
Accepts Medicare AssignmentsMay be. She may accept the Medicare-approved amount; you may be billed for more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Marilyn F Grams attended and graduated from University Of Utah School Of Medicine in 1978
  NPI Data:
  • NPI Number: 1669492104
  • Provider Enumeration Date: 07/20/2006
  • Last Update Date: 04/23/2019
  Medicare PECOS Information:
  • PECOS PAC ID: 3375527674
  • Enrollment ID: I20040615000798

Medical Identifiers

Medical identifiers for Marilyn F Grams such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1669492104NPI-NPPES
000097204OtherMTBCBS PIN
000097205OtherMTBCBS PI
0068770OtherMTMDCD PIN

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
208M00000XHospitalist 8742023-1205 (Utah)Secondary
208M00000XHospitalist M-14661 (Idaho)Secondary
207RG0300XInternal Medicine - Geriatric Medicine 10557 (Montana)Primary

Hospital Affiliation

Hospital NameLocationType
Cabinet Peaks Medical CenterLibby, MTCritical Access Hospital
St Peters HospitalHelena, MTAcute Care Hospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
St Peters Community Hospital7911814926157
St. John's Lutheran Hospital Inc155725567624

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Marilyn F Grams allows following entities to bill medicare on her behalf.
Entity NameSt Peters Community Hospital
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1205025145
PECOS PAC ID: 7911814926
Enrollment ID: O20031204001245
Entity NameSt. John's Lutheran Hospital Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1952312050
PECOS PAC ID: 1557255676
Enrollment ID: O20040210000931
Entity NameMarcus Daly Memorial Hospital Corporation
Entity TypePart A Provider - Critical Access Hospital
Entity IdentifiersNPI Number: 1659475846
PECOS PAC ID: 5597664474
Enrollment ID: O20061104000439
Entity NameSt. John's Lutheran Hospital Inc
Entity TypePart A Provider - Critical Access Hospital
Entity IdentifiersNPI Number: 1952312050
PECOS PAC ID: 1557255676
Enrollment ID: O20120405000136

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Marilyn F Grams is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Marilyn F Grams, MD
Po Box 35100,
Billings, MT 59107-5100

Ph: (406) 238-2500
Marilyn F Grams, MD
2825 8th Ave N,
Billings, MT 59101-0909

Ph: (406) 238-2500

Reviews and Comments


Internal Medicine Doctors in Billings, MT

Jon D Roebuck,
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Dr. Shuang Li, M.D.
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Megan B Littlefield, M.D.
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Phone: 406-247-3350    Fax: 406-247-3389
Charles Mcclave, MD
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Medicare: Accepting Medicare Assignments
Practice Location: 2900 12th Ave N, Suite 160w, Billings, MT 59101
Phone: 406-237-8500    Fax: 406-237-8501
Robert J. Sachs, MD
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Medicare: Accepting Medicare Assignments
Practice Location: 2825 8th Avenue North, Billings, MT 59101
Phone: 406-238-2500    

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.