Dr Gregorio Tan, MD - Medicare Cardiovascular Disease (cardiology) in Kalamazoo, MI

Dr Gregorio Tan, MD is a medicare enrolled "Internal Medicine - Cardiovascular Disease" physician in Kalamazoo, Michigan. He graduated from medical school in 1979 and has 45 years of diverse experience with area of expertise as Cardiovascular Disease (cardiology). He is a member of the group practice Ascension Medical Group Promed and his current practice location is 1722 Shaffer St, Suite 1, Kalamazoo, Michigan. You can reach out to his office (for appointments etc.) via phone at (269) 381-3963.

Dr Gregorio Tan is licensed to practice in Michigan (license number 4301067381) 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 1316926751.

Contact Information

Dr Gregorio Tan, MD
1722 Shaffer St, Suite 1,
Kalamazoo, MI 49048-1633
(269) 381-3963
(269) 381-2809

Map and Direction




Physician's Profile

Full NameDr Gregorio Tan
GenderMale
SpecialityCardiovascular Disease (cardiology)
Experience45 Years
Location1722 Shaffer St, Kalamazoo, 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:
  • Dr Gregorio Tan graduated from medical school in 1979
  NPI Data:
  • NPI Number: 1316926751
  • Provider Enumeration Date: 01/13/2006
  • Last Update Date: 07/08/2007
  Medicare PECOS Information:
  • PECOS PAC ID: 0244218576
  • Enrollment ID: I20040712001404

Medical Identifiers

Medical identifiers for Dr Gregorio Tan such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1316926751NPI-NPPES
4387885MedicaidMI

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RC0000XInternal Medicine - Cardiovascular Disease 4301067381 (Michigan)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Borgess Medical CenterKalamazoo, MIHospital
Oaklawn HospitalMarshall, MIHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Ascension Medical Group Promed7315856077230

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 Gregorio Tan allows following entities to bill medicare on his behalf.
Entity NameAscension Medical Group Promed
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1497709869
PECOS PAC ID: 7315856077
Enrollment ID: O20031216000478
Entity NameAscension Borgess Hospital
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1568416311
PECOS PAC ID: 5294645750
Enrollment ID: O20040209000029

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 Gregorio Tan 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 Gregorio Tan, MD
1722 Shaffer St, Suite 1,
Kalamazoo, MI 49048-1633

Ph: (269) 381-3963
Dr Gregorio Tan, MD
1722 Shaffer St, Suite 1,
Kalamazoo, MI 49048-1633

Ph: (269) 381-3963

Reviews and Comments


Internal Medicine Doctors in Kalamazoo, MI

Dr. Eric S Shay, M.D.
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Medicare: Accepting Medicare Assignments
Practice Location: 601 John St, Suite M-170, Kalamazoo, MI 49007
Phone: 269-381-5060    Fax: 269-381-1655
Michael Trexler,
Cardiovascular Disease
Medicare: Accepting Medicare Assignments
Practice Location: 1521 Gull Rd, Suite 173, Kalamazoo, MI 49048
Phone: 269-226-5165    
Dr. Christopher Rogers, D.O.
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Medicare: Accepting Medicare Assignments
Practice Location: 601 John St, Ste 100, Kalamazoo, MI 49007
Phone: 269-373-1222    Fax: 269-373-6270
Desmonda Brady Wixson, MD
Cardiovascular Disease
Medicare: Accepting Medicare Assignments
Practice Location: 4613 W Main St Ste A, Kalamazoo, MI 49006
Phone: 269-488-8672    Fax: 269-488-8673
Dr. Kevin L. Beyer, D.O.
Cardiovascular Disease
Medicare: Accepting Medicare Assignments
Practice Location: 1535 Gull Rd, Suite 105, Kalamazoo, MI 49048
Phone: 269-385-9900    Fax: 269-385-2140
Ernest Lee Yoder, MD
Cardiovascular Disease
Medicare: Accepting Medicare Assignments
Practice Location: 1000 Oakland Dr, Kalamazoo, MI 49008
Phone: 269-337-6300    
Valerie Siqueira Duhn, MD
Cardiovascular Disease
Medicare: Accepting Medicare Assignments
Practice Location: 521 E. Michigan Ave, Ste 201, Kalamazoo, MI 49007
Phone: 269-349-6759    Fax: 369-349-7450

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.