Dr David Andrew Mark, MD - Medicare Internal Medicine in Hardin, MT

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Dr David Andrew Mark, MD is a medicare enrolled "Internal Medicine" physician in Hardin, Montana. His current practice location is 402 N Center Ave, Hardin, Montana. You can reach out to his office (for appointments etc.) via phone at (406) 655-4103.

Dr David Andrew Mark is licensed to practice in Montana (license number MED-PHYS-LIC-12540) and he also participates in the medicare program. He does not accept medicare assignments directly but he may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. His NPI Number is 1023166840.

Contact Information

Dr David Andrew Mark, MD
402 N Center Ave,
Hardin, MT 59034-1808
(406) 655-4103
Not Available

Map and Direction




Physician's Profile

Full NameDr David Andrew Mark
GenderMale
SpecialityInternal Medicine
Location402 N Center Ave, Hardin, Montana
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1023166840
  • Provider Enumeration Date: 01/08/2007
  • Last Update Date: 07/27/2026
  Medicare PECOS Information:
  • PECOS PAC ID: 4981502010
  • Enrollment ID: I20031226000240

Medical Identifiers

Medical identifiers for Dr David Andrew Mark such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1023166840NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207Q00000XFamily Medicine MED-PHYS-LIC-12540 (Montana)Secondary
207R00000XInternal Medicine MED-PHYS-LIC-12540 (Montana)Primary
208000000XPediatrics MED-PHYS-LIC-12540 (Montana)Secondary

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. Dr David Andrew Mark allows following entities to bill medicare on his behalf.
Entity NameU S Health Dept of Health & Human Services
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1972694602
PECOS PAC ID: 9638081623
Enrollment ID: O20031106000399

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. Dr David Andrew Mark 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
Dr David Andrew Mark, MD
402 N Center Ave,
Hardin, MT 59034-1808

Ph: (406) 655-4103		Dr David Andrew Mark, MD
402 N Center Ave,
Hardin, MT 59034-1808

Ph: (406) 655-4103

Reviews and Comments


Internal Medicine Doctors in Hardin, MT

Robert Gordon Byron, MD
Internal Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 10 4th St W, Suite B, Hardin, MT 59034
Phone: 406-665-4103    
Carol Greimann, MD
Internal Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 16 N Miles Ave, Hardin, MT 59034
Phone: 406-665-2205    Fax: 406-665-1159

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.