Dr Ireneo Yap Diaz Jr, MD - Medicare Internal Medicine in Battle Creek, MI

Dr Ireneo Yap Diaz Jr, MD is a medicare enrolled "Internal Medicine" physician in Battle Creek, Michigan. His current practice location is 5500 Armstrong Rd, Battle Creek, Michigan. You can reach out to his office (for appointments etc.) via phone at (269) 966-5600.

Dr Ireneo Yap Diaz Jr is licensed to practice in Michigan (license number 4301065745) 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 1043321409.

Contact Information

Dr Ireneo Yap Diaz Jr, MD
5500 Armstrong Rd,
Battle Creek, MI 49015-1014
(269) 966-5600
(269) 660-6041

Map and Direction




Physician's Profile

Full NameDr Ireneo Yap Diaz Jr
GenderMale
SpecialityInternal Medicine
Location5500 Armstrong Rd, Battle Creek, Michigan
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1043321409
  • Provider Enumeration Date: 08/31/2006
  • Last Update Date: 09/03/2020
  Medicare PECOS Information:
  • PECOS PAC ID: 0941481568
  • Enrollment ID: I20150529002528

Medical Identifiers

Medical identifiers for Dr Ireneo Yap Diaz Jr such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1043321409NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RI0200XInternal Medicine - Infectious Disease 4301065745 (Michigan)Secondary
207R00000XInternal Medicine 4301065745 (Michigan)Primary

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 Ireneo Yap Diaz Jr 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 Ireneo Yap Diaz Jr, MD
5500 Armstrong Rd,
Battle Creek, MI 49037-7314

Ph: (269) 966-5600
Dr Ireneo Yap Diaz Jr, MD
5500 Armstrong Rd,
Battle Creek, MI 49015-1014

Ph: (269) 966-5600

Reviews and Comments


Internal Medicine Doctors in Battle Creek, MI

Dr. Thomas F. Ignaczak, M.D.
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Eric John Smith, DO
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Mrs. Ashley Marie Fugate, FNP-BC
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Phone: 269-965-8866    
Shekhar C Thakur, MD
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Medicare: Not Enrolled in Medicare
Practice Location: 231 North Ave, Battle Creek, MI 49017
Phone: 269-565-1111    Fax: 269-565-1900

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.