Mr Aaron Justin Small, MD - Medicare Gastroenterology in Aiea, HI

Mr Aaron Justin Small, MD is a medicare enrolled "Internal Medicine - Gastroenterology" physician in Aiea, Hawaii. He went to Mayo Medical School and graduated in 2008 and has 16 years of diverse experience with area of expertise as Gastroenterology. He is a member of the group practice Mel A Ona M D Incorporated and his current practice location is 98-1079 Moanalua Rd, Aiea, Hawaii. You can reach out to his office (for appointments etc.) via phone at (808) 486-6000.

Mr Aaron Justin Small is licensed to practice in Hawaii (license number MD-18102) 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 1407015399.

Contact Information

Mr Aaron Justin Small, MD
98-1079 Moanalua Rd,
Aiea, HI 96701-4713
(808) 486-6000
Not Available

Map and Direction




Physician's Profile

Full NameMr Aaron Justin Small
GenderMale
SpecialityGastroenterology
Experience16 Years
Location98-1079 Moanalua Rd, Aiea, Hawaii
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:
  • Mr Aaron Justin Small attended and graduated from Mayo Medical School in 2008
  NPI Data:
  • NPI Number: 1407015399
  • Provider Enumeration Date: 06/05/2008
  • Last Update Date: 02/14/2022
  Medicare PECOS Information:
  • PECOS PAC ID: 0446475107
  • Enrollment ID: I20150527002063

Medical Identifiers

Medical identifiers for Mr Aaron Justin Small such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1407015399NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RG0100XInternal Medicine - Gastroenterology MD-18102 (Hawaii)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Pali Momi Medical CenterAiea, HIHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Mel A Ona M D Incorporated93354894423

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. Mr Aaron Justin Small allows following entities to bill medicare on his behalf.
Entity NameHawaii Permanente Medical Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1710945969
PECOS PAC ID: 7618880667
Enrollment ID: O20031106000625
Entity NameAaron J Small Md Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1912440090
PECOS PAC ID: 8527349737
Enrollment ID: O20161230001318
Entity NameMel A Ona M D Incorporated
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1710459300
PECOS PAC ID: 9335489442
Enrollment ID: O20190327000073

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. Mr Aaron Justin Small 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
Mr Aaron Justin Small, MD
95-390 Kuahelani Ave # 3ac-131,
Mililani, HI 96789-1192

Ph: (808) 468-4145
Mr Aaron Justin Small, MD
98-1079 Moanalua Rd,
Aiea, HI 96701-4713

Ph: (808) 486-6000

Reviews and Comments


Internal Medicine Doctors in Aiea, HI

Dr. Dawn A. Miura, M.D.
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 98-1079 Moanalua Rd, Suite 350, Aiea, HI 96701
Phone: 808-487-2277    Fax: 808-488-5582
Dr. Michael Wayne Chan, M.D.
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 98-1079 Moanalua Rd, Suite 655, Aiea, HI 96701
Phone: 808-486-6200    
Dr. Craig Yoshio Hamasaki, M.D.
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 98-1247 Kaahumanu Street, Suite 224, Aiea, HI 96701
Phone: 808-486-9119    Fax: 808-486-9401
Dr. Kevin Scott Hara, M.D.
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 98-1079 Moanalua Rd, Suite 430, Aiea, HI 96701
Phone: 808-484-2000    Fax: 808-488-6580
Shayne Mark Castanera, M.D.
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 98-1079 Moanalua Rd, Aiea, HI 96701
Phone: 808-486-6000    
Dr. Ky H Le, MD
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 98-199 Kamehameha Hwy Unit C-10b, Aiea, HI 96701
Phone: 808-954-4500    Fax: 808-758-0146
Dr. Malissa Hyun Kyung Iida-takashima, MD
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 98-1079 Moanalua Rd, Ste 500, Aiea, HI 96701
Phone: 808-488-0990    

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.