Mark A Twardowski, DO - Medicare Internal Medicine in Grand Junction, CO

Mark A Twardowski, DO is a medicare enrolled "Family Medicine" physician in Grand Junction, Colorado. He went to Kansas City Medical College and graduated in 1988 and has 36 years of diverse experience with area of expertise as Internal Medicine. He is a member of the group practice Community Medical Group Llc and his current practice location is 743 Horizon Ct, Suite 100, Grand Junction, Colorado. You can reach out to his office (for appointments etc.) via phone at (970) 241-7600.

Mark A Twardowski is licensed to practice in Colorado (license number 31690) 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 1437118387.

Contact Information

Mark A Twardowski, DO
743 Horizon Ct, Suite 100,
Grand Junction, CO 81506-8701
(970) 241-7600
(970) 263-4831

Map and Direction




Physician's Profile

Full NameMark A Twardowski
GenderMale
SpecialityInternal Medicine
Experience36 Years
Location743 Horizon Ct, Grand Junction, Colorado
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:
  • Mark A Twardowski attended and graduated from Kansas City Medical College in 1988
  NPI Data:
  • NPI Number: 1437118387
  • Provider Enumeration Date: 03/20/2006
  • Last Update Date: 03/07/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 9436174406
  • Enrollment ID: I20090605000191

Medical Identifiers

Medical identifiers for Mark A Twardowski such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1437118387NPI-NPPES
1316900MedicaidCO
31690OtherCOCOLORADO BOARD ME

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207Q00000XFamily Medicine 31690 (Colorado)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Hopewest Grand JunctionGrand junction, COHospice
Community HospitalGrand junction, COHospital
St Marys Medical CenterGrand junction, COHospital
Center At Foresight Llc, TheGrand junction, CONursing home

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Community Medical Group Llc105261278585

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. Mark A Twardowski allows following entities to bill medicare on his behalf.
Entity NameColorado West Healthcare System
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1497723407
PECOS PAC ID: 3971491887
Enrollment ID: O20040310000712
Entity NameWestern Medical Associates
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1366458648
PECOS PAC ID: 0547238149
Enrollment ID: O20040921001301
Entity NameCommunity Medical Group Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1043640634
PECOS PAC ID: 1052612785
Enrollment ID: O20151222000695

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. Mark A Twardowski 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
Mark A Twardowski, DO
Po Box 1727,
Grand Jct, CO 81502-1727

Ph: (970) 241-7600
Mark A Twardowski, DO
743 Horizon Ct, Suite 100,
Grand Junction, CO 81506-8701

Ph: (970) 241-7600

Reviews and Comments


Family Medicine Doctors in Grand Junction, CO

Dr. Mitchell Lee Darnell, MD
Family Medicine
Medicare: Medicare Enrolled
Practice Location: 2698 Patterson Rd, Grand Junction, CO 81506
Phone: 970-298-2800    
Craig Allen Gustafson, MD
Family Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 2478 Patterson Rd, Suite 27, Grand Junction, CO 81505
Phone: 970-242-1566    Fax: 970-263-0134
Jeffery Bowman, DO
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 525 North Ave, Grand Junction, CO 81501
Phone: 970-424-5030    
S. Christopher Weaver, MD
Family Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 3150 N 12th St, Grand Junction, CO 81506
Phone: 970-245-1220    Fax: 970-245-9148
Dr. Kathleen Sanae Ono, D.O.
Family Medicine
Medicare: Medicare Enrolled
Practice Location: 2121 North Ave, Grand Junction, CO 81501
Phone: 970-242-0731    
Katherine Garnett, M.D.
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 2698 Patterson Rd, Grand Junction, CO 81506
Phone: 970-298-2800    Fax: 970-298-7522
Keith Dickerson, M.D.
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1160 Patterson Rd, Grand Junction, CO 81506
Phone: 970-298-2800    Fax: 970-298-7522

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.