Mark A St Cyr, MD - Medicare Internal Medicine in Lafayette, LA

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Mark A St Cyr, MD is a medicare enrolled "Emergency Medicine - Emergency Medical Services" physician in Lafayette, Louisiana. He went to Louisiana State University School Of Medicine In Shreveport and graduated in 1986 and has 38 years of diverse experience with area of expertise as Internal Medicine. He is a member of the group practice Christus Health Central Louisiana, Derussy Emergency Group Llc and his current practice location is 2100 Jefferson St, Lafayette, Louisiana. You can reach out to his office (for appointments etc.) via phone at (337) 261-0734.

Mark A St Cyr is licensed to practice in Louisiana (license number 018991) 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 1184678997.

Contact Information

Mark A St Cyr, MD
2100 Jefferson St,
Lafayette, LA 70501-8556
(337) 261-0734
Not Available

Map and Direction




Physician's Profile

Full NameMark A St Cyr
GenderMale
SpecialityInternal Medicine
Experience38 Years
Location2100 Jefferson St, Lafayette, Louisiana
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:
  • Mark A St Cyr attended and graduated from Louisiana State University School Of Medicine In Shreveport in 1986
  NPI Data:
  • NPI Number: 1184678997
  • Provider Enumeration Date: 05/19/2006
  • Last Update Date: 04/15/2008
  Medicare PECOS Information:
  • PECOS PAC ID: 9335197748
  • Enrollment ID: I20050112000006

Medical Identifiers

Medical identifiers for Mark A St Cyr such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1184678997NPI-NPPES
1365963MedicaidLA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207PE0004XEmergency Medicine - Emergency Medical Services 018991 (Louisiana)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Claiborne Memorial Medical CenterHomer, LAHospital
Avoyelles HospitalMarksville, LAHospital
Christus Coushatta Health Care CenterCoushatta, LAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Christus Health Central Louisiana468857095534
Derussy Emergency Group Llc387083464112

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. Mark A St Cyr allows following entities to bill medicare on his behalf.
Entity NameAcadia-st. Landry Hospital Service District
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1518981968
PECOS PAC ID: 3476458092
Enrollment ID: O20031205000219
Entity NameEast Carroll Parish Hospital
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1982695441
PECOS PAC ID: 1153216619
Enrollment ID: O20040216000563
Entity NameHomer Memorial Hospital
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1609066646
PECOS PAC ID: 1456322692
Enrollment ID: O20040803000291
Entity NameCorrect Care, Inc.
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1215987441
PECOS PAC ID: 8628980992
Enrollment ID: O20040816000150
Entity NameSt Helena Parish Hospital
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1588614036
PECOS PAC ID: 6901893205
Enrollment ID: O20070313000054
Entity NameByrd Emergency Group Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1083858773
PECOS PAC ID: 8325197569
Enrollment ID: O20090519000372
Entity NameSt Helena Parish Hospital
Entity TypePart A Provider - Critical Access Hospital
Entity IdentifiersNPI Number: 1588614036
PECOS PAC ID: 6901893205
Enrollment ID: O20100115000573
Entity NameSt Helena Parish Hospital
Entity TypePart A Provider - Critical Access Hospital
Entity IdentifiersNPI Number: 1013068808
PECOS PAC ID: 6901893205
Enrollment ID: O20100115000596
Entity NameSavoy Medical Management Group, Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1760714497
PECOS PAC ID: 1557403953
Enrollment ID: O20100423000620
Entity NameThe Hospital Service District Of West Feliciana Parish Louisiana
Entity TypePart A Provider - Critical Access Hospital
Entity IdentifiersNPI Number: 1164497533
PECOS PAC ID: 3173512548
Enrollment ID: O20141110000718
Entity NameEvangeline Clinical Services Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1235510280
PECOS PAC ID: 3870805104
Enrollment ID: O20160223000852
Entity NameChristus Health Central Louisiana
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1417494758
PECOS PAC ID: 4688570955
Enrollment ID: O20170515000438
Entity NameDerussy Emergency Group Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1306300900
PECOS PAC ID: 3870834641
Enrollment ID: O20190403002252
Entity NameCotton Emergency Group Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1235693821
PECOS PAC ID: 5698017655
Enrollment ID: O20190424000276

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. Mark A St Cyr 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
Mark A St Cyr, MD
2100 Jefferson St,
Lafayette, LA 70501-8556

Ph: (337) 261-0734		Mark A St Cyr, MD
2100 Jefferson St,
Lafayette, LA 70501-8556

Ph: (337) 261-0734

Reviews and Comments


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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).

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