Jeff R Willis, MD - Medicare Gastroenterology in Missoula, MT

Jeff R Willis, MD is a medicare enrolled "Internal Medicine - Gastroenterology" physician in Missoula, Montana. He went to Virginia Commonwealth University, School Of Medicine and graduated in 1990 and has 34 years of diverse experience with area of expertise as Gastroenterology. He is a member of the group practice Montana Gastroenterology, Pllc and his current practice location is 500 W Broadway St, Missoula, Montana. You can reach out to his office (for appointments etc.) via phone at (406) 721-5600.

Jeff R Willis is licensed to practice in Montana (license number 56022) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1356385991.

Contact Information

Jeff R Willis, MD
500 W Broadway St,
Missoula, MT 59802-4008
(406) 721-5600
(406) 721-3907

Map and Direction




Physician's Profile

Full NameJeff R Willis
GenderMale
SpecialityGastroenterology
Experience34 Years
Location500 W Broadway St, Missoula, Montana
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Jeff R Willis attended and graduated from Virginia Commonwealth University, School Of Medicine in 1990
  NPI Data:
  • NPI Number: 1356385991
  • Provider Enumeration Date: 06/15/2006
  • Last Update Date: 07/21/2022
  Medicare PECOS Information:
  • PECOS PAC ID: 7113826850
  • Enrollment ID: I20170601001375

Medical Identifiers

Medical identifiers for Jeff R Willis such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1356385991NPI-NPPES
5825041MedicaidVA
327082OtherVAANTHEM
8905530MedicaidNC
15750OtherVAOPTIMA
1659563799OtherVAGROUP NPI
100012482OtherVAMEDICARE RR
5426240OtherVAAETNA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RG0100XInternal Medicine - Gastroenterology 0101059226 (Virginia)Secondary
207RG0100XInternal Medicine - Gastroenterology 56022 (Montana)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
St. Patrick HospitalMissoula, MTHospital
Community Medical CenterMissoula, MTHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Montana Gastroenterology, Pllc761839631815

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. Jeff R Willis allows following entities to bill medicare on his behalf.
Entity NameMontana Gastroenterology, Pllc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1821612946
PECOS PAC ID: 7618396318
Enrollment ID: O20200930000358

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. Jeff R Willis 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
Jeff R Willis, MD
Po Box 7609,
Missoula, MT 59807-7609

Ph: (406) 721-5600
Jeff R Willis, MD
500 W Broadway St,
Missoula, MT 59802-4008

Ph: (406) 721-5600

Reviews and Comments


Internal Medicine Doctors in Missoula, MT

Mr. George Bandow, MD
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Phone: 406-541-7139    Fax: 406-541-7143
Simone Musco, MD
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Practice Location: 500 W Broadway St, Ste 320, Missoula, MT 59802
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Rolf H O Holle, M.D.
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John David Anthony Lakatua, MD
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Practice Location: 500 West Broadway, Missoula, MT 59802
Phone: 406-721-5600    Fax: 406-721-3907
Mr. Curtis G Wickre, MD
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Medicare: Not Enrolled in Medicare
Practice Location: 500 W Broadway St, 4th Floor, Missoula, MT 59802
Phone: 406-327-1900    
Dr. Charlotte Nelson, MD
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Medicare: Accepting Medicare Assignments
Practice Location: 500 W Broadway St, Missoula, MT 59802
Phone: 406-327-1613    
Michele A Danicich, MD
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Medicare: Accepting Medicare Assignments
Practice Location: 900 N Orange St Ste 304, Missoula, MT 59802
Phone: 406-329-5781    Fax: 406-327-3331

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.