Dr James Williams, MD - Medicare Emergency Medicine in Dededo, GU

Dr James Williams, MD is a medicare enrolled "Emergency Medicine" physician in Dededo, Guam. He went to New York University School Of Medicine and graduated in 2017 and has 7 years of diverse experience with area of expertise as Emergency Medicine. He is a member of the group practice Guam Healthcare Development Incorporated and his current practice location is 133 Route 3, Dededo, Guam. You can reach out to his office (for appointments etc.) via phone at (671) 645-5546.

Dr James Williams is licensed to practice in Guam (license number M-2316) 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 1518491307.

Contact Information

Dr James Williams, MD
133 Route 3,
Dededo, GU 96929-6911
(671) 645-5546
Not Available



Physician's Profile

Full NameDr James Williams
GenderMale
SpecialityEmergency Medicine
Experience7 Years
Location133 Route 3, Dededo, Guam
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 James Williams attended and graduated from New York University School Of Medicine in 2017
  NPI Data:
  • NPI Number: 1518491307
  • Provider Enumeration Date: 04/18/2017
  • Last Update Date: 11/01/2022
  Medicare PECOS Information:
  • PECOS PAC ID: 9638597131
  • Enrollment ID: I20221229001042

Medical Identifiers

Medical identifiers for Dr James Williams such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1518491307NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207P00000XEmergency Medicine A157561 (California)Secondary
207P00000XEmergency Medicine M-2316 (Guam)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Guam Regional Medical CityDededo, GUHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Guam Healthcare Development Incorporated9234351776124

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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 James Williams allows following entities to bill medicare on his behalf.
Entity NameGuam Healthcare Development Incorporated
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1326447939
PECOS PAC ID: 9234351776
Enrollment ID: O20150326000266

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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 James Williams 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 James Williams, MD
133 Route 3,
Dededo, GU 96929-6911

Ph: () -
Dr James Williams, MD
133 Route 3,
Dededo, GU 96929-6911

Ph: (671) 645-5546

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Emergency Medicine Doctors in Dededo, GU

Kathryn Mary Guffrey, M.D.
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 113 Route 3, Grmc, Emergency Department, Dededo, GU 96912
Phone: 671-645-5500    
Dr. James Gragg, D.O.
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 133 Route 3, Dededo, GU 96929
Phone: 671-645-5546    
George Patrick Macris, MD
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 2214 Army Dr, Dededo, GU 96929
Phone: 671-637-1777    Fax: 671-637-4385
Frankie Torres Mendiola, M.D.
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 133 Route 3, Dededo, GU 96929
Phone: 671-645-5546    
Mr. Brian Daniel James, D.O.
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 133 Route 3, Dededo, GU 96929
Phone: 671-645-5500    
Sarah Elisabeth Haley-wien, D.O.
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 133 Route 3, Dededo, GU 96929
Phone: 671-645-5546    

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