Dr Diane Nagasaka, MD - Medicare Family Practice in Wailuku, HI

Dr Diane Nagasaka, MD is a medicare enrolled "Family Medicine" physician in Wailuku, Hawaii. She went to University Of California, Geffen School Of Medicine and graduated in 1979 and has 45 years of diverse experience with area of expertise as Family Practice. She is a member of the group practice Maui Medical Group Inc and her current practice location is 2180 Main St, Wailuku, Hawaii. You can reach out to her office (for appointments etc.) via phone at (808) 242-6464.

Dr Diane Nagasaka is licensed to practice in Hawaii (license number MD5239) and she also participates in the medicare program. She accepts medicare assignments (which means she accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and her NPI Number is 1144256603.

Contact Information

Dr Diane Nagasaka, MD
2180 Main St,
Wailuku, HI 96793-1625
(808) 242-6464
(808) 242-4209

Map and Direction




Physician's Profile

Full NameDr Diane Nagasaka
GenderFemale
SpecialityFamily Practice
Experience45 Years
Location2180 Main St, Wailuku, Hawaii
Accepts Medicare AssignmentsYes. She accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Dr Diane Nagasaka attended and graduated from University Of California, Geffen School Of Medicine in 1979
  NPI Data:
  • NPI Number: 1144256603
  • Provider Enumeration Date: 06/24/2006
  • Last Update Date: 10/20/2024
  Medicare PECOS Information:
  • PECOS PAC ID: 8426183096
  • Enrollment ID: I20100322000297

Medical Identifiers

Medical identifiers for Dr Diane Nagasaka such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1144256603NPI-NPPES
02053602MedicaidHI
02053601MedicaidHI
022699OtherHIHMSA
99017685996793B065OtherHITRICARE - CHAMPUS
02053601OtherHIQUEST ALOHA CARE
022699OtherHI65 C PLUS - HMSA
990176859OtherHIHMA - HMAA -
02053603MedicaidHI

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207Q00000XFamily Medicine MD5239 (Hawaii)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Maui Medical Group Inc721482336865

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 Diane Nagasaka allows following entities to bill medicare on her behalf.
Entity NameMaui Medical Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1215963970
PECOS PAC ID: 7214823368
Enrollment ID: O20040225000575

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 Diane Nagasaka 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 Diane Nagasaka, MD
2180 Main St,
Wailuku, HI 96793-1625

Ph: (808) 242-6464
Dr Diane Nagasaka, MD
2180 Main St,
Wailuku, HI 96793-1625

Ph: (808) 242-6464

Reviews and Comments


Family Medicine Doctors in Wailuku, HI

John G Meisel, MD
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 55 Maui Lani Pkwy, Wailuku, HI 96793
Phone: 808-243-6050    
Dr. Bradley Holman Glenn, MD
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 85 Maui Lani Pkwy, Wailuku, HI 96793
Phone: 808-244-5366    
Dr. Guy M. Sugino, MD
Family Medicine
Medicare: Medicare Enrolled
Practice Location: 55 Mauilani Pkwy, Wailuku, HI 96793
Phone: 808-243-6050    
Kathleen Kearns, M.D.
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1881 Nani St, Wailuku, HI 96793
Phone: 808-871-7772    Fax: 808-872-4092
Gabrielle A O'sullivan, MD
Family Medicine
Medicare: Medicare Enrolled
Practice Location: 1881 Nani Street, Wailuku, HI 96793
Phone: 808-871-7772    Fax: 808-872-4036
Errol T Buntuyan, MD
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 55 Maui Lani Pkwy, Wailuku, HI 96793
Phone: 808-243-6050    

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.