Dr Catherine Loniewski Girdler, DO - Medicare Emergency Medicine in Rochester, MI

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Dr Catherine Loniewski Girdler, DO is a medicare enrolled "Emergency Medicine" physician in Rochester, Michigan. She went to Michigan State University College Of Osteopathic Medicine and graduated in 1996 and has 28 years of diverse experience with area of expertise as Emergency Medicine. She is a member of the group practice Mackinac Straits Health System Inc, Emergency Department Physicians Pc and her current practice location is 1101 W University Dr, Rochester, Michigan. You can reach out to her office (for appointments etc.) via phone at (248) 283-1100.

Dr Catherine Loniewski Girdler is licensed to practice in Michigan (license number 5101012990) and she also participates in the medicare program. She accepts medicare assignments (which means she accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and her NPI Number is 1275575250.

Contact Information

Dr Catherine Loniewski Girdler, DO
1101 W University Dr,
Rochester, MI 48307-1863
(248) 283-1100
(248) 283-1103

Map and Direction




Physician's Profile

Full NameDr Catherine Loniewski Girdler
GenderFemale
SpecialityEmergency Medicine
Experience28 Years
Location1101 W University Dr, Rochester, Michigan
Accepts Medicare AssignmentsYes. She accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Dr Catherine Loniewski Girdler attended and graduated from Michigan State University College Of Osteopathic Medicine in 1996
  NPI Data:
  • NPI Number: 1275575250
  • Provider Enumeration Date: 06/12/2006
  • Last Update Date: 01/31/2024
  Medicare PECOS Information:
  • PECOS PAC ID: 0446233142
  • Enrollment ID: I20041202000937

Medical Identifiers

Medical identifiers for Dr Catherine Loniewski Girdler such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1275575250NPI-NPPES
114262488MedicaidMI
CL012990OtherMIBC/BS

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207P00000XEmergency Medicine 5101012990 (Michigan)Primary
207PE0004XEmergency Medicine - Emergency Medical Services 5101012990 (Michigan)Secondary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Ascension Providence - Crittenton Hospital Medical CenterRochester, MIHospital
Beaumont Hospital Royal OakRoyal oak, MIHospital
Ascension St John HospitalDetroit, MIHospital
Mackinac Straits Hospital And Health CenterSaint ignace, MIHospital

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 Catherine Loniewski Girdler allows following entities to bill medicare on her behalf.
Entity NameIndependent Emergency Physicians, P.c.
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1780791343
PECOS PAC ID: 6709798325
Enrollment ID: O20031103000407
Entity NameRochester Emergency Group, P.c.
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1730108705
PECOS PAC ID: 7911894688
Enrollment ID: O20040228000239
Entity NameEmergency Department Physicians Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1225083595
PECOS PAC ID: 9436048998
Enrollment ID: O20040312000466
Entity NameAscension Providence Rochester Hospital
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1437272523
PECOS PAC ID: 8820994098
Enrollment ID: O20040316000704
Entity NameMackinac Straits Health System Inc
Entity TypePart A Provider - Critical Access Hospital
Entity IdentifiersNPI Number: 1124283502
PECOS PAC ID: 1456420876
Enrollment ID: O20080527000172
Entity NameObservation Emergency Physicians Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1497920524
PECOS PAC ID: 9133292410
Enrollment ID: O20080719000024
Entity NameMackinac Straits Health System Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1659536035
PECOS PAC ID: 1456420876
Enrollment ID: O20080930000157
Entity NameIndependent Observation Physicians Pllc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1700119500
PECOS PAC ID: 3577603604
Enrollment ID: O20091221000327

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 Catherine Loniewski Girdler 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 Catherine Loniewski Girdler, DO
1101 W University Dr, Crittenton Hospital,
Rochester, MI 48307-1863

Ph: (248) 283-1100		Dr Catherine Loniewski Girdler, DO
1101 W University Dr,
Rochester, MI 48307-1863

Ph: (248) 283-1100

Reviews and Comments


Emergency Medicine Doctors in Rochester, MI

Dr. Anthony Joslin, D.O.
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1101 W University Dr, Rochester, MI 48307
Phone: 248-652-5000    
Dr. Beverly Huszarik, M.D.
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1101 W University Dr, Rochester, MI 48307
Phone: 248-652-5000    
Dr. Michael Vickery, D.O.
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1101 W University Dr, Rochester, MI 48307
Phone: 248-652-5000    
Dr. Richard F Nimbach, D.O.
Emergency Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 1101 W University Dr, Rochester, MI 48307
Phone: 248-652-5000    
Dr. David Bauer, M.D.
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1101 W University Dr, Rochester, MI 48307
Phone: 248-652-5000    
Dr. Donald Smith Jr., MD
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1101 W University Dr, Rochester, MI 48307
Phone: 248-652-5454    Fax: 248-601-6198

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.