Mark A Sierra, MD - Medicare Cardiovascular Disease (cardiology) in West Branch, MI

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Mark A Sierra, MD is a medicare enrolled "Internal Medicine - Cardiovascular Disease" physician in West Branch, Michigan. He graduated from medical school in 2002 and has 22 years of diverse experience with area of expertise as Cardiovascular Disease (cardiology). He is a member of the group practice Mclaren Bay Region, Mclaren Central Michigan and his current practice location is 2431 S. M-30, West Branch, Michigan. You can reach out to his office (for appointments etc.) via phone at (989) 343-3264.

Mark A Sierra is licensed to practice in Michigan (license number 4301086565) 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 1639381593.

Contact Information

Mark A Sierra, MD
2431 S. M-30,
West Branch, MI 48661-9312
(989) 343-3264
(989) 343-3202

Map and Direction




Physician's Profile

Full NameMark A Sierra
GenderMale
SpecialityCardiovascular Disease (cardiology)
Experience22 Years
Location2431 S. M-30, West Branch, Michigan
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 Sierra graduated from medical school in 2002
  NPI Data:
  • NPI Number: 1639381593
  • Provider Enumeration Date: 05/04/2007
  • Last Update Date: 04/25/2012
  Medicare PECOS Information:
  • PECOS PAC ID: 9032281613
  • Enrollment ID: I20080627000038

Medical Identifiers

Medical identifiers for Mark A Sierra such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1639381593NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RC0000XInternal Medicine - Cardiovascular Disease 4301086565 (Michigan)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Mclaren Bay RegionBay city, MIHospital
Mclaren Central MichiganMount pleasant, MIHospital
Midmichigan Medical Center-west BranchWest branch, MIHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Mclaren Bay Region5597659011106
Mclaren Central Michigan6103733092155

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 Sierra allows following entities to bill medicare on his behalf.
Entity NameMclaren Medical Group
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1346396066
PECOS PAC ID: 3971416082
Enrollment ID: O20031106000025
Entity NameMclaren Bay Region
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1508131087
PECOS PAC ID: 5597659011
Enrollment ID: O20040213000277
Entity NameMclaren Central Michigan
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1245266063
PECOS PAC ID: 6103733092
Enrollment ID: O20040309000447

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 Sierra 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 Sierra, MD
401 S. Bellenger Hwy,
Flint, MI 48532-3638

Ph: (810) 342-1000		Mark A Sierra, MD
2431 S. M-30,
West Branch, MI 48661-9312

Ph: (989) 343-3264

Reviews and Comments


Internal Medicine Doctors in West Branch, MI

Shreedhar Adhikari, MD
Cardiovascular Disease
Medicare: Accepting Medicare Assignments
Practice Location: 648 Progress St Ste 101, West Branch, MI 48661
Phone: 989-345-0204    Fax: 989-345-3727
Aliya Frances Browne, DO
Cardiovascular Disease
Medicare: Accepting Medicare Assignments
Practice Location: 2431 S M 30, West Branch, MI 48661
Phone: 989-343-3130    
Dr. David Bryan Butcher, MD
Cardiovascular Disease
Medicare: Accepting Medicare Assignments
Practice Location: 648 Progress St Ste 101, West Branch, MI 48661
Phone: 989-345-0204    Fax: 989-345-3727
Dr. Sally Jo Sperbeck, DO
Cardiovascular Disease
Medicare: Not Enrolled in Medicare
Practice Location: 575 Court St Ste 3, West Branch, MI 48661
Phone: 989-701-2159    
David J Ternes, DO
Cardiovascular Disease
Medicare: Accepting Medicare Assignments
Practice Location: 2431 S M 30, West Branch, MI 48661
Phone: 989-343-3264    Fax: 989-343-3202
Amanda Melissa Gomes, M.D.
Cardiovascular Disease
Medicare: Accepting Medicare Assignments
Practice Location: 648 Progress St, Suite 101, West Branch, MI 48661
Phone: 989-345-0204    

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.