John W Mahan Iii, MD - Medicare Internal Medicine in Great Falls, MT

John W Mahan Iii, MD is a medicare enrolled "Hospitalist" physician in Great Falls, Montana. He went to University Of New Mexico School Of Medicine and graduated in 1989 and has 35 years of diverse experience with area of expertise as Internal Medicine. He is a member of the group practice Benefis Hospitals Inc and his current practice location is 1101 26th St S, Great Falls, Montana. You can reach out to his office (for appointments etc.) via phone at (406) 731-8888.

John W Mahan Iii is licensed to practice in Montana (license number 7173) 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 1346241296.

Contact Information

John W Mahan Iii, MD
1101 26th St S,
Great Falls, MT 59405-5161
(406) 731-8888
(406) 731-8876



Physician's Profile

Full NameJohn W Mahan Iii
GenderMale
SpecialityInternal Medicine
Experience35 Years
Location1101 26th St S, Great Falls, 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:
  • John W Mahan Iii attended and graduated from University Of New Mexico School Of Medicine in 1989
  NPI Data:
  • NPI Number: 1346241296
  • Provider Enumeration Date: 08/02/2005
  • Last Update Date: 04/08/2024
  Medicare PECOS Information:
  • PECOS PAC ID: 0244336261
  • Enrollment ID: I20130513000427

Medical Identifiers

Medical identifiers for John W Mahan Iii such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1346241296NPI-NPPES
0096720MedicaidMT

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine 7173 (Montana)Secondary
208M00000XHospitalist 7173 (Montana)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Benefis Hospitals IncGreat falls, MTHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Benefis Hospitals Inc1153235296279

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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. John W Mahan Iii allows following entities to bill medicare on his behalf.
Entity NameBenefis Hospitals Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1780968974
PECOS PAC ID: 1153235296
Enrollment ID: O20100629000044

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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. John W Mahan Iii 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
John W Mahan Iii, MD
1101 26th St S,
Great Falls, MT 59405-5161

Ph: (406) 731-8888
John W Mahan Iii, MD
1101 26th St S,
Great Falls, MT 59405-5161

Ph: (406) 731-8888

News Archive

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New research findings presented this week in New Orleans during ENDO 2004, the 86th Annual Meeting of The Endocrine Society, could help keep kids healthier.

Drugs designed to disable enzyme TOPK could have anti-cancer benefits

Working with human colorectal cancer cells, a University of Minnesota team, led by cancer biologists Zigang Dong and Ann Bode, has found the potential culprit among a network of enzymes that relay signals inside cells to regulate such functions as cell growth, cancer development and programmed cell death.

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Hospitalist Doctors in Great Falls, MT

Elias J. Baied, DO
Hospitalist
Medicare: Accepting Medicare Assignments
Practice Location: 1401 25th St S, Great Falls, MT 59405
Phone: 406-731-8888    Fax: 406-731-8318
Chu Shei Hong, MD
Hospitalist
Medicare: Accepting Medicare Assignments
Practice Location: 1101 26th St S, Great Falls, MT 59405
Phone: 406-455-5319    Fax: 406-455-4173
Dr. James Tennent Geren, MD
Hospitalist
Medicare: Not Enrolled in Medicare
Practice Location: 1101 26th St S, Great Falls, MT 59405
Phone: 406-731-8888    Fax: 406-731-8876
Dr. Michael Shun Yeen Yu, MD
Hospitalist
Medicare: Medicare Enrolled
Practice Location: 1101 26th St S, Great Falls, MT 59405
Phone: 406-731-8888    Fax: 406-731-8318
Mr. Don Stuart Wipf, FNP-BC
Hospitalist
Medicare: Accepting Medicare Assignments
Practice Location: 1609 41st St S, Great Falls, MT 59405
Phone: 605-360-8477    
Tauqeer Rahat, M.D.
Hospitalist
Medicare: Accepting Medicare Assignments
Practice Location: 1101 26th St S, Great Falls, MT 59405
Phone: 443-851-6886    
Mrs. Teresa Frey, DO
Hospitalist
Medicare: Medicare Enrolled
Practice Location: 1101 26th St S, Great Falls, MT 59405
Phone: 406-731-8888    Fax: 406-731-8318

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