Hitomi Hosoya, MD - Medicare Hematology/oncology in Los Angeles, CA

Hitomi Hosoya, MD is a medicare enrolled "Internal Medicine - Hematology" physician in Los Angeles, California. She graduated from medical school in 2009 and has 16 years of diverse experience with area of expertise as Hematology/oncology. She is a member of the group practice Stanford Health Care and her current practice location is 127 S San Vicente Blvd Fl 7, Los Angeles, California. You can reach out to her office (for appointments etc.) via phone at (310) 423-1160.

Hitomi Hosoya is licensed to practice in California (license number A163013) 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 1265895817.

Contact Information

Hitomi Hosoya, MD
127 S San Vicente Blvd Fl 7,
Los Angeles, CA 90048-3311
(310) 423-1160
(310) 423-4646

Map and Direction




Physician's Profile

Full NameHitomi Hosoya
GenderFemale
SpecialityHematology/oncology
Experience16 Years
Location127 S San Vicente Blvd Fl 7, Los Angeles, California
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:
  • Hitomi Hosoya graduated from medical school in 2009
  NPI Data:
  • NPI Number: 1265895817
  • Provider Enumeration Date: 03/31/2016
  • Last Update Date: 11/04/2025
  Medicare PECOS Information:
  • PECOS PAC ID: 1658746862
  • Enrollment ID: I20230331000281

Medical Identifiers

Medical identifiers for Hitomi Hosoya such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1265895817NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine A163013 (California)Secondary
207R00000XInternal Medicine MT210849 (Pennsylvania)Secondary
207RH0000XInternal Medicine - Hematology A163013 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Stanford Health CareStanford, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Stanford Health Care67097974912771

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. Hitomi Hosoya allows following entities to bill medicare on her behalf.
Entity NameStanford Health Care
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1437292927
PECOS PAC ID: 6709797491
Enrollment ID: O20031124000348
Entity NameLpch Medical Group Div Of Lucile
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1417907940
PECOS PAC ID: 0840298543
Enrollment ID: O20061113000232

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. Hitomi Hosoya 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
Hitomi Hosoya, MD
4140 W 190th St,
Torrance, CA 90504-5513

Ph: (650) 723-4000
Hitomi Hosoya, MD
127 S San Vicente Blvd Fl 7,
Los Angeles, CA 90048-3311

Ph: (310) 423-1160

Reviews and Comments


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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.