Dr Henry Arthur Oster, MD - Medicare Internal Medicine in Ventura, CA

Dr Henry Arthur Oster, MD is a medicare enrolled "Internal Medicine - Infectious Disease" physician in Ventura, California. His current practice location is 2721 E Main St, Ventura, California. You can reach out to his office (for appointments etc.) via phone at (805) 656-6272.

Dr Henry Arthur Oster is licensed to practice in California (license number G33690) 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 1417992223.

Contact Information

Dr Henry Arthur Oster, MD
2721 E Main St,
Ventura, CA 93003-2803
(805) 656-6272
(805) 656-3863

Map and Direction




Physician's Profile

Full NameDr Henry Arthur Oster
GenderMale
SpecialityInternal Medicine - Infectious Disease
Location2721 E Main St, Ventura, California
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1417992223
  • Provider Enumeration Date: 06/17/2006
  • Last Update Date: 05/01/2017
  Medicare PECOS Information:
  • PECOS PAC ID: 8022020866
  • Enrollment ID: I20060619000269

Medical Identifiers

Medical identifiers for Dr Henry Arthur Oster such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1417992223NPI-NPPES
00G336900MedicaidCA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RI0200XInternal Medicine - Infectious Disease G33690 (California)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. Dr Henry Arthur Oster allows following entities to bill medicare on his behalf.
Entity NameHenry A Oster, Md, Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1427075118
PECOS PAC ID: 3274604848
Enrollment ID: O20080625000614

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 Henry Arthur Oster 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 Henry Arthur Oster, MD
Po Box 3674,
Ventura, CA 93006-3674

Ph: (805) 656-6272
Dr Henry Arthur Oster, MD
2721 E Main St,
Ventura, CA 93003-2803

Ph: (805) 656-6272

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.