James L Chen, DO - Medicare Allergy & Immunology in San Francisco, CA

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James L Chen, DO is a medicare enrolled "Allergy & Immunology" physician in San Francisco, California. His current practice location is 6850 Geary Blvd, San Francisco, California. You can reach out to his office (for appointments etc.) via phone at (415) 751-6800.

James L Chen is licensed to practice in California (license number 20A8279) 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 1891870119.

Contact Information

James L Chen, DO
6850 Geary Blvd,
San Francisco, CA 94121-1604
(415) 751-6800
Not Available

Map and Direction




Physician's Profile

Full NameJames L Chen
GenderMale
SpecialityAllergy & Immunology
Location6850 Geary Blvd, San Francisco, California
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1891870119
  • Provider Enumeration Date: 10/26/2006
  • Last Update Date: 12/08/2021
  Medicare PECOS Information:
  • PECOS PAC ID: 4688630031
  • Enrollment ID: I20041207000821

Medical Identifiers

Medical identifiers for James L Chen such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1891870119NPI-NPPES
00AX82790MedicaidCA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207K00000XAllergy & Immunology 20A8279 (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. James L Chen allows following entities to bill medicare on his behalf.
Entity NamePermanente Medical Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1073606299
PECOS PAC ID: 8921910225
Enrollment ID: O20031104000710
Entity NameAsthma & Allergy Clinic Of Marin & San Francisco
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1902826456
PECOS PAC ID: 4587684394
Enrollment ID: O20051122000817

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. James L Chen 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
James L Chen, DO
6850 Geary Blvd,
San Francisco, CA 94121-1604

Ph: (415) 751-6800		James L Chen, DO
6850 Geary Blvd,
San Francisco, CA 94121-1604

Ph: (415) 751-6800

Reviews and Comments


Allergy & Immunology Doctors in San Francisco, CA

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Dr. Jeffrey Mitchel Davidson, M.D.
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Dr. Roger F. Espiritu, M.D.
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Monica Tang,
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Phone: 415-353-2725    Fax: 415-476-4009

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.