Dr John Mark Koester, DO - Medicare Emergency Medicine in Des Moines, IA

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Dr John Mark Koester, DO is a medicare enrolled "Emergency Medicine" physician in Des Moines, Iowa. His current practice location is 1200 Pleasant St, Des Moines, Iowa. You can reach out to his office (for appointments etc.) via phone at (515) 241-6212.

Dr John Mark Koester is licensed to practice in Iowa (license number 02137) 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 1811978646.

Contact Information

Dr John Mark Koester, DO
1200 Pleasant St,
Des Moines, IA 50309-1406
(515) 241-6212
Not Available

Map and Direction




Physician's Profile

Full NameDr John Mark Koester
GenderMale
SpecialityEmergency Medicine
Location1200 Pleasant St, Des Moines, Iowa
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1811978646
  • Provider Enumeration Date: 11/09/2005
  • Last Update Date: 05/26/2020
  Medicare PECOS Information:
  • PECOS PAC ID: 9739104456
  • Enrollment ID: I20051012000357

Medical Identifiers

Medical identifiers for Dr John Mark Koester such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1811978646NPI-NPPES
1811978646MedicaidIA
1811978646OtherIABLUE SHIELD

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207P00000XEmergency Medicine 02137 (Iowa)Primary

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 John Mark Koester allows following entities to bill medicare on his behalf.
Entity NameCentral Iowa Hospital Corporation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1104879576
PECOS PAC ID: 1052229275
Enrollment ID: O20040128001102

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 John Mark Koester 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 John Mark Koester, DO
3497 Ne 78th Ave,
Ankeny, IA 50021-9377

Ph: (515) 965-3632		Dr John Mark Koester, DO
1200 Pleasant St,
Des Moines, IA 50309-1406

Ph: (515) 241-6212

Reviews and Comments


Emergency Medicine Doctors in Des Moines, IA

Myles Kawamura, DO
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1111 6th Ave, Emergency Department, Des Moines, IA 50314
Phone: 515-247-3211    Fax: 515-643-8933
Brooke Johnson, D.O.
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1200 Pleasant St, Des Moines, IA 50309
Phone: 515-241-6262    
Hijinio G. Carreon, D.O.
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1111 6th Ave, Emergency Department, Des Moines, IA 50314
Phone: 515-247-4445    
Dr. Chad William Becker, D.O.
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1200 Pleasant St, Des Moines, IA 50309
Phone: 515-241-6412    
Dr. Kevin Pothoven, M.D.
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1111 6th Ave, Des Moines, IA 50314
Phone: 515-247-3211    Fax: 515-643-8722
Dr. Anastasia Maria Marx, D.O.
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1200 Pleasant St, Des Moines, IA 50309
Phone: 515-241-6212    
Dr. Benjamin R Sweet, M.D.
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1111 6th Ave, Des Moines, IA 50314
Phone: 515-247-3121    

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.