Dr William Casey Frew, MD - Medicare Emergency Medicine in Marrero, LA

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Dr William Casey Frew, MD is a medicare enrolled "Emergency Medicine" physician in Marrero, Louisiana. He went to Tulane University School Of Medicine and graduated in 2008 and has 18 years of diverse experience with area of expertise as Emergency Medicine. He is a member of the group practice St Martin Emergency Group Llc, St. Bernard Emergency Group, Llc, St Mary Emergency Group Llc and his current practice location is 1101 Medical Center Blvd., Er, Marrero, Louisiana. You can reach out to his office (for appointments etc.) via phone at (504) 349-1533.

Dr William Casey Frew is licensed to practice in Louisiana (license number 207465) 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 1740556000.

Contact Information

Dr William Casey Frew, MD
1101 Medical Center Blvd., Er,
Marrero, LA 70072
(504) 349-1533
(504) 349-1530

Map and Direction




Physician's Profile

Full NameDr William Casey Frew
GenderMale
SpecialityEmergency Medicine
Experience18 Years
Location1101 Medical Center Blvd., Marrero, 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:
  • Dr William Casey Frew attended and graduated from Tulane University School Of Medicine in 2008
  NPI Data:
  • NPI Number: 1740556000
  • Provider Enumeration Date: 03/30/2012
  • Last Update Date: 07/23/2015
  Medicare PECOS Information:
  • PECOS PAC ID: 9537470547
  • Enrollment ID: I20150617002179

Medical Identifiers

Medical identifiers for Dr William Casey Frew such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1740556000NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207P00000XEmergency Medicine 207465 (Louisiana)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
St Martin HospitalBreaux bridge, LAHospital
St Bernard Parish HospitalChalmette, LAHospital
Ochsner St MaryMorgan city, LAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
St Martin Emergency Group Llc084044468317
St. Bernard Emergency Group, Llc478996097219
St Mary Emergency Group Llc781092699516

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 William Casey Frew allows following entities to bill medicare on his behalf.
Entity NameOchsner Clinic Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1538151428
PECOS PAC ID: 8224933619
Enrollment ID: O20031126000513
Entity NameKenner Emergency Group Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1013986546
PECOS PAC ID: 8426011230
Enrollment ID: O20041111000475
Entity NameAcs Primary Care Physicians Louisiana Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1306889092
PECOS PAC ID: 4486566932
Enrollment ID: O20050324000095
Entity NameSt. John Emergency Group Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1265401509
PECOS PAC ID: 4082641303
Enrollment ID: O20050719000541
Entity NameSt Mary Emergency Group Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1235108499
PECOS PAC ID: 7810926995
Enrollment ID: O20050809000607
Entity NameSt Martin Emergency Group Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1710231774
PECOS PAC ID: 0840444683
Enrollment ID: O20130204000235
Entity NameBelle Chasse Emergency Group Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1851714075
PECOS PAC ID: 7113140070
Enrollment ID: O20140521001580
Entity NameLuling Emergency Group Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1528446101
PECOS PAC ID: 8325352636
Enrollment ID: O20150730013151
Entity NameThibodaux Emergency Physicians Group Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1568910503
PECOS PAC ID: 2769760537
Enrollment ID: O20161028001769
Entity NameSt. Bernard Emergency Group, Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1306386685
PECOS PAC ID: 4789960972
Enrollment ID: O20170425001231
Entity NameRaceland Emergency Group Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1023604352
PECOS PAC ID: 4082028261
Enrollment ID: O20210129000530
Entity NameKeystone Medical Services Of Ferriday, Inc.
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1215704754
PECOS PAC ID: 5991140600
Enrollment ID: O20240304001066

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 William Casey Frew 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 William Casey Frew, MD
1101 Medical Center Blvd., Er,
Marrero, LA 70072

Ph: (504) 349-1533		Dr William Casey Frew, MD
1101 Medical Center Blvd., Er,
Marrero, LA 70072

Ph: (504) 349-1533

Reviews and Comments


Emergency Medicine Doctors in Marrero, LA

Dr. James W Callaghan, MD
Emergency Medicine
Medicare: Medicare Enrolled
Practice Location: 1101 Medical Center Blvd, Emergency Department, Marrero, LA 70072
Phone: 504-349-1533    Fax: 504-349-1530
Dr. Daniel C Kolinsky, M.D.
Emergency Medicine
Medicare: Medicare Enrolled
Practice Location: 1101 Medical Center Blvd., Er, Marrero, LA 70072
Phone: 504-349-1533    Fax: 504-349-1530
Dr. Scott Michael Zainey, M.D.
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1101 Medical Center Blvd., Emergency Department, Marrero, LA 70072
Phone: 504-349-1533    Fax: 504-349-1530
Elizabeth Cochrane Ritz, M.D.
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1101 Medical Center Blvd, Marrero, LA 70072
Phone: 504-349-1533    
Dr. John Joseph Lamartina Jr., MD
Emergency Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 5216 Lapalco Blvd, Marrero, LA 70072
Phone: 504-348-4357    Fax: 504-348-8656
Dr. Geoffrey Smith, MD
Emergency Medicine
Medicare: Medicare Enrolled
Practice Location: 1101 Medical Center Blvd, Emergency Department, Marrero, LA 70072
Phone: 504-349-1533    Fax: 504-349-1530
Dr. Mark R. Rice, M.D.
Emergency Medicine
Medicare: Medicare Enrolled
Practice Location: 1101 Medical Ctr. Blvd., Er, Marrero, LA 70072
Phone: 504-249-1533    Fax: 504-349-1530

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.