Dr Dietmar J Grentz, MD - Medicare Family Medicine in Portage, MI

Dr Dietmar J Grentz, MD is a medicare enrolled "Family Medicine" physician in Portage, Michigan. His current practice location is 2725 Airview Blvd, Ste 105, Portage, Michigan. You can reach out to his office (for appointments etc.) via phone at (269) 349-8386.

Dr Dietmar J Grentz is licensed to practice in Michigan (license number 4301069296) 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 1346269586.

Contact Information

Dr Dietmar J Grentz, MD
2725 Airview Blvd, Ste 105,
Portage, MI 49002-1803
(269) 349-8386
(269) 349-8397

Map and Direction




Physician's Profile

Full NameDr Dietmar J Grentz
GenderMale
SpecialityFamily Medicine
Location2725 Airview Blvd, Portage, Michigan
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1346269586
  • Provider Enumeration Date: 07/19/2006
  • Last Update Date: 07/22/2016
  Medicare PECOS Information:
  • PECOS PAC ID: 6901942341
  • Enrollment ID: I20091015000164

Medical Identifiers

Medical identifiers for Dr Dietmar J Grentz such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1346269586NPI-NPPES
M97310016OtherMEDICARE

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207Q00000XFamily Medicine 39564 (Minnesota)Secondary
207Q00000XFamily Medicine 4301069296 (Michigan)Primary
207Q00000XFamily Medicine 036069689 (Illinois)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 Dietmar J Grentz allows following entities to bill medicare on his behalf.
Entity NameVpa Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1336153295
PECOS PAC ID: 9234041948
Enrollment ID: O20031103000102

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 Dietmar J Grentz 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 Dietmar J Grentz, MD
7088 Green Timber Ct,
Greenville, MI 48838-8193

Ph: (616) 712-6436
Dr Dietmar J Grentz, MD
2725 Airview Blvd, Ste 105,
Portage, MI 49002-1803

Ph: (269) 349-8386

Reviews and Comments


Family Medicine Doctors in Portage, MI

Brandon J Manderle, MD
Family Medicine
Medicare: Medicare Enrolled
Practice Location: 2700 E Centre Ave, Portage, MI 49002
Phone: 269-286-7050    
Carolyn Von Maur,
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 7901 Angling Road, Suite B-201, Portage, MI 49024
Phone: 269-324-8600    
Remnant Mwanahiba, MD
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 2700 E Centre Ave, Portage, MI 49002
Phone: 269-286-7050    
Dr. Ann M. Busha, MD
Family Medicine
Medicare: Medicare Enrolled
Practice Location: 3300 W Centre Ave, Portage, MI 49024
Phone: 269-324-8950    Fax: 269-324-2134
Amber Darey, MD
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 3300 W Centre Ave, Portage, MI 49024
Phone: 269-324-8950    Fax: 269-324-2134
Lawrence Ulmer,
Family Medicine
Medicare: Medicare Enrolled
Practice Location: 7901 Angling Rd, Suite B-201, Portage, MI 49024
Phone: 269-324-8600    Fax: 269-324-8617
Dr. Miriam Yvonne Veldt, MD
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 2725 Airview Blvd, Suite 105, Portage, MI 49002
Phone: 269-349-8386    Fax: 269-349-8397

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.