Matthew Thomas Middendorf, MD - Medicare Internal Medicine in Agana Heights, GU

Matthew Thomas Middendorf, MD is a medicare enrolled "Internal Medicine" physician in Agana Heights, Guam. His current practice location is Farenholt Ave. Bldg. 50, Agana Heights, Guam. You can reach out to his office (for appointments etc.) via phone at (671) 344-9340.

Matthew Thomas Middendorf is licensed to practice in South Carolina (license number MD39270) and he also participates in the medicare program. He does not accept medicare assignments directly but he may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. His NPI Number is 1629305784.

Contact Information

Matthew Thomas Middendorf, MD
Farenholt Ave. Bldg. 50,
Agana Heights, GU 96910
(671) 344-9340
Not Available

Map and Direction




Physician's Profile

Full NameMatthew Thomas Middendorf
GenderMale
SpecialityInternal Medicine
LocationFarenholt Ave. Bldg. 50, Agana Heights, Guam
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1629305784
  • Provider Enumeration Date: 11/11/2009
  • Last Update Date: 09/19/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 5698024750
  • Enrollment ID: I20231020000660

Medical Identifiers

Medical identifiers for Matthew Thomas Middendorf such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1629305784NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RP1001XInternal Medicine - Pulmonary Disease MD39270 (South Carolina)Secondary
207RC0200XInternal Medicine - Critical Care Medicine MD39270 (South Carolina)Secondary
207RC0200XInternal Medicine - Critical Care Medicine M-2396 (Guam)Secondary
207RP1001XInternal Medicine - Pulmonary Disease M-2396 (Guam)Secondary
207R00000XInternal Medicine MD39270 (South Carolina)Primary

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. Matthew Thomas Middendorf 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

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. Matthew Thomas Middendorf 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
Matthew Thomas Middendorf, MD
Psc 455 Box 208,
Fpo, AP 96540-0003

Ph: (706) 296-3552
Matthew Thomas Middendorf, MD
Farenholt Ave. Bldg. 50,
Agana Heights, GU 96910

Ph: (671) 344-9340

Reviews and Comments


Internal Medicine Doctors in Agana Heights, GU

Dr. Benjamin Moberly, MD
Internal Medicine
Medicare: Medicare Enrolled
Practice Location: Bldg 50 Farenholt Ave, Agana Heights, GU 96910
Phone: 671-344-9202    
Kimberly Boyd,
Internal Medicine
Medicare: Medicare Enrolled
Practice Location: Us Naval Hospital Guam, Farenholt Ave, Bldg 50, Agana Heights, GU 96910
Phone: 671-344-9340    
Cullen Pressley, M.D.
Internal Medicine
Medicare: Medicare Enrolled
Practice Location: Bldg 50, Farenholt Ave, Agana Heights, GU 96910
Phone: 671-344-9202    

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.