Mary Ann Santos Pefanco, MD - Medicare Geriatric Medicine in Hilo, HI

Mary Ann Santos Pefanco, MD is a medicare enrolled "Internal Medicine" physician in Hilo, Hawaii. She graduated from medical school in 1999 and has 25 years of diverse experience with area of expertise as Geriatric Medicine. She is a member of the group practice King County Public Hospital District No 2 and her current practice location is 1178b Kinoole St, Hilo, Hawaii. You can reach out to her office (for appointments etc.) via phone at (808) 969-1427.

Mary Ann Santos Pefanco is licensed to practice in Hawaii (license number MD13875) 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 1780769703.

Contact Information

Mary Ann Santos Pefanco, MD
1178b Kinoole St,
Hilo, HI 96720-4133
(808) 969-1427
(808) 961-4909

Map and Direction




Physician's Profile

Full NameMary Ann Santos Pefanco
GenderFemale
SpecialityGeriatric Medicine
Experience25 Years
Location1178b Kinoole St, Hilo, 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:
  • Mary Ann Santos Pefanco graduated from medical school in 1999
  NPI Data:
  • NPI Number: 1780769703
  • Provider Enumeration Date: 10/26/2006
  • Last Update Date: 03/20/2008
  Medicare PECOS Information:
  • PECOS PAC ID: 4082616123
  • Enrollment ID: I20130508000593

Medical Identifiers

Medical identifiers for Mary Ann Santos Pefanco such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1780769703NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine MD13875 (Hawaii)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Evergreenhealth Home CareKirkland, WAHome health agency
Evergreen Health Hospice CareKirkland, WAHospice
Evergreenhealth Medical CenterKirkland, WAHospital
Evergreenhealth MonroeMonroe, WAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
King County Public Hospital District No 27618880097497

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. Mary Ann Santos Pefanco allows following entities to bill medicare on her behalf.
Entity NameKing County Public Hospital District No 2
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1801986070
PECOS PAC ID: 7618880097
Enrollment ID: O20031111000557

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. Mary Ann Santos Pefanco 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
Mary Ann Santos Pefanco, MD
224 Haili St Ste B,
Hilo, HI 96720-2975

Ph: (808) 961-4072
Mary Ann Santos Pefanco, MD
1178b Kinoole St,
Hilo, HI 96720-4133

Ph: (808) 969-1427

Reviews and Comments


Internal Medicine Doctors in Hilo, HI

Dr. Jon V Martell, MD
Internal Medicine
Medicare: Medicare Enrolled
Practice Location: 1190 Waianuenue Ave, Hilo, HI 96720
Phone: 808-974-4700    
Dr. Douglas Hiroshi Yamashita, MD
Internal Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 1276 Kinoole St, Hilo, HI 96720
Phone: 808-935-7181    Fax: 808-935-6332
Dr. Thomas C Chen, MD
Internal Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 1097 Apono Pl, Hilo, HI 96720
Phone: 808-959-6549    Fax: 808-959-6549
Mrs. Joy Sakai Wilson, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1190 Waianuenue Ave, Hilo, HI 96720
Phone: 808-932-3395    
Dr. Tiffany Ma, M.D., M.P.H
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1190 Waianuenue Ave, Hilo, HI 96720
Phone: 925-487-0372    
Dr. Anthony Lim, M.D.
Internal Medicine
Medicare: Medicare Enrolled
Practice Location: 1285 Waianuenue Ave, Hilo, HI 96720
Phone: 808-933-0625    Fax: 808-974-6864
Dr. Pradeepta Chowdhury, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 670 Ponahawai St, Ste116, Hilo, HI 96720
Phone: 808-961-3404    Fax: 808-961-5460

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.