Dr William R Marriott, MD - Medicare Emergency Medicine in Dayton, OH

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Dr William R Marriott, MD is a medicare enrolled "Emergency Medicine" physician in Dayton, Ohio. He went to Wright State University Boonshoft School Of Medicine and graduated in 1991 and has 34 years of diverse experience with area of expertise as Emergency Medicine. He is a member of the group practice Phs Emergency Billing Llc and his current practice location is 1 Wyoming St, Dayton, Ohio. You can reach out to his office (for appointments etc.) via phone at (513) 281-4400.

Dr William R Marriott is licensed to practice in Ohio (license number 35-063868) 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 1003907494.

Contact Information

Dr William R Marriott, MD
1 Wyoming St,
Dayton, OH 45409-2722
(513) 281-4400
(513) 587-8213

Map and Direction




Physician's Profile

Full NameDr William R Marriott
GenderMale
SpecialityEmergency Medicine
Experience34 Years
Location1 Wyoming St, Dayton, Ohio
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 R Marriott attended and graduated from Wright State University Boonshoft School Of Medicine in 1991
  NPI Data:
  • NPI Number: 1003907494
  • Provider Enumeration Date: 09/28/2006
  • Last Update Date: 07/21/2010
  Medicare PECOS Information:
  • PECOS PAC ID: 4880599455
  • Enrollment ID: I20101020000596

Medical Identifiers

Medical identifiers for Dr William R Marriott such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1003907494NPI-NPPES
0961375MedicaidOH

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207P00000XEmergency Medicine 35-063868 (Ohio)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Miami Valley HospitalDayton, OHHospital
Upper Valley Medical CenterTroy, OHHospital
Atrium Medical CenterFranklin, OHHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Phs Emergency Billing Llc781042694756

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 R Marriott allows following entities to bill medicare on his behalf.
Entity NameMiami Valley Emergency Specialists, Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1821189085
PECOS PAC ID: 9537064183
Enrollment ID: O20031205000322
Entity NamePhs Emergency Billing Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1578387486
PECOS PAC ID: 7810426947
Enrollment ID: O20250117002759

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 R Marriott 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 R Marriott, MD
2950 Robertson Ave, 2nd Floor,
Cincinnati, OH 45209-1268

Ph: (513) 281-4400		Dr William R Marriott, MD
1 Wyoming St,
Dayton, OH 45409-2722

Ph: (513) 281-4400

Reviews and Comments


Emergency Medicine Doctors in Dayton, OH

Lara Martinez,
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 405 W Grand Ave, Dayton, OH 45405
Phone: 937-723-3245    
David Michael Miranda, M.D.
Emergency Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 1010 Woodman Dr, Dayton, OH 45432
Phone: 937-424-2215    Fax: 937-252-1224
Dr. Daniel Phillip Pitstick, D.O.
Emergency Medicine
Medicare: Medicare Enrolled
Practice Location: 1 Wyoming St, Dayton, OH 45409
Phone: 937-208-3356    
Douglas E Reynolds, MD
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1 Wyoming St, Dayton, OH 45409
Phone: 937-208-3356    
Dr. Richmond Lemos, D.O.
Emergency Medicine
Medicare: Medicare Enrolled
Practice Location: 1 Wyoming St, Dayton, OH 45409
Phone: 513-281-4400    Fax: 513-587-8213
Mary J Erickson, MD
Emergency Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 1 Childrens Plz, Dayton, OH 45404
Phone: 937-641-3321    Fax: 937-641-4410

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.