Dr Michael P Hemmersmeier, DO - Medicare Family Practice in O Fallon, MO

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Dr Michael P Hemmersmeier, DO is a medicare enrolled "Family Medicine" physician in O Fallon, Missouri. He went to At Still University Of Health Sciences, College Of Osteo Med, Kirksville and graduated in 1995 and has 29 years of diverse experience with area of expertise as Family Practice. He is a member of the group practice Ssm Medical Group Inc and his current practice location is 1101 Highway K, O Fallon, Missouri. You can reach out to his office (for appointments etc.) via phone at (636) 379-4590.

Dr Michael P Hemmersmeier is licensed to practice in Missouri (license number 108737) 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 1366404832.

Contact Information

Dr Michael P Hemmersmeier, DO
1101 Highway K,
O Fallon, MO 63366-8431
(636) 379-4590
(636) 669-2401

Map and Direction




Physician's Profile

Full NameDr Michael P Hemmersmeier
GenderMale
SpecialityFamily Practice
Experience29 Years
Location1101 Highway K, O Fallon, Missouri
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 Michael P Hemmersmeier attended and graduated from At Still University Of Health Sciences, College Of Osteo Med, Kirksville in 1995
  NPI Data:
  • NPI Number: 1366404832
  • Provider Enumeration Date: 04/03/2006
  • Last Update Date: 10/22/2020
  Medicare PECOS Information:
  • PECOS PAC ID: 7315071982
  • Enrollment ID: I20100818000367

Medical Identifiers

Medical identifiers for Dr Michael P Hemmersmeier such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1366404832NPI-NPPES
249794603MedicaidMO

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207Q00000XFamily Medicine 108737 (Missouri)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Ssm Health At Home Home Health-st LouisSaint louis, MOHome health agency
Ssm Health At Home HospiceLake saint louis, MOHospice
Ssm St Joseph Hospital WestLake saint louis, MOHospital
Ssm St Joseph Health CenterSaint charles, MOHospital
Ssm Depaul Health CenterBridgeton, MOHospital
Missouri Baptist Medical CenterTown and country, MOHospital
St Lukes HospitalChesterfield, MOHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Ssm Medical Group Inc6608776299496

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 Michael P Hemmersmeier allows following entities to bill medicare on his behalf.
Entity NameSsm Health Care St Louis
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1275586174
PECOS PAC ID: 7810800737
Enrollment ID: O20031118000393
Entity NameSsm Medical Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1700966207
PECOS PAC ID: 6608776299
Enrollment ID: O20040729001034

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 Michael P Hemmersmeier 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 Michael P Hemmersmeier, DO
Po Box 955534 Suite 310,
Saint Louis, MO 63195-3539

Ph: () -		Dr Michael P Hemmersmeier, DO
1101 Highway K,
O Fallon, MO 63366-8431

Ph: (636) 379-4590

Reviews and Comments


Family Medicine Doctors in O Fallon, MO

Dr. Chandra K Wiewel, M.D.
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1101 Highway K, O Fallon, MO 63366
Phone: 636-379-4590    Fax: 636-669-2401
Amanda Heidemann, MD
Family Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 2630 Highway K, O Fallon, MO 63368
Phone: 636-980-5300    Fax: 636-980-5344
Dr. Ximena Soledad Schnurr, M.D.
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 2630 State Highway K, Ste 100, O Fallon, MO 63368
Phone: 636-240-5454    
Ms. Betty Rachel Varghese, M.D.
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 2 Progress Point Ct, O Fallon, MO 63368
Phone: 636-344-1151    Fax: 636-344-1176
John J. O'brien, M.D.
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 2630 Highway K, O Fallon, MO 63368
Phone: 636-240-5454    Fax: 618-980-5335
Dr. Amy Elizabeth Grawey, M.D.
Family Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 207 E Pitman St, O Fallon, MO 63366
Phone: 636-875-1140    Fax: 636-898-1960
Dr. Leonard M Hoffmann, M.D.
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1101 Highway K, O Fallon, MO 63366
Phone: 636-379-4590    Fax: 636-669-2401

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.