Peninsula Gastrointestinal - Medicare Primary Care in San Mateo, CA

Peninsula Gastrointestinal is a medicare enrolled primary clinic (Internal Medicine - Gastroenterology) in San Mateo, California. The current practice location for Peninsula Gastrointestinal is 100 S Ellsworth Ave, Suite 507, San Mateo, California. For appointments, you can reach them via phone at (650) 342-7432. The mailing address for Peninsula Gastrointestinal is 100 S Ellsworth Ave, Suite 507, San Mateo, California and phone number is (650) 342-7432.

Peninsula Gastrointestinal is licensed to practice in * (Not Available) (license number ). The clinic also participates in the medicare program and its NPI number is 1306144209. This medical practice accepts medicare insurance (which means this clinic accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance). However, please confirm if they accept your insurance at (650) 342-7432.

Contact Information

Peninsula Gastrointestinal
100 S Ellsworth Ave
Suite 507
San Mateo
CA 94401-3939
(650) 342-7432
(650) 342-3239

Map and Direction


Primary Care Clinic Profile

Full NamePeninsula Gastrointestinal
SpecialityInternal Medicine
Location100 S Ellsworth Ave, San Mateo, California
Authorized Official Name and PositionEdward K Onuma (PRESIDENT)
Authorized Official Contact6503427432
Accepts Medicare InsuranceYes. This clinic participates in medicare program and accept medicare insurance.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Peninsula Gastrointestinal
100 S Ellsworth Ave
Suite 507
San Mateo
CA 94401-3939

Ph: (650) 342-7432
Peninsula Gastrointestinal
100 S Ellsworth Ave
Suite 507
San Mateo
CA 94401-3939

Ph: (650) 342-7432

NPI Details:

NPI Number1306144209
Provider Enumeration Date03/02/2011
Last Update Date08/18/2016

Medicare PECOS Information:

Medicare PECOS PAC ID6204011471
Medicare Enrollment IDO20110503000655

Medical Identifiers

Medical identifiers for Peninsula Gastrointestinal such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1306144209NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RG0100XInternal Medicine - Gastroenterology (* (Not Available))Primary

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Peninsula Gastrointestinal acts as a billing entity for following providers:
Provider NameEugene Young Lee
Provider TypePractitioner - Gastroenterology
Provider IdentifiersNPI Number: 1023049590
PECOS PAC ID: 2163402603
Enrollment ID: I20040723000882
Provider NameEdward Onuma
Provider TypePractitioner - Gastroenterology
Provider IdentifiersNPI Number: 1477559722
PECOS PAC ID: 6103829387
Enrollment ID: I20110215000946

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.